"You are an auditor for XBRL filings. \nGiven two concepts and the provided filing (schema, presentation, calculation, definition, label, instance, and US GAAP taxonomy),\ndetermine which one of the following erroneous relationship types best describes the relationship between the two concepts:\n\n(1) Reversal  \n    Definition: A relationship is flagged as Reversal when the filer\u2019s extension taxonomy redefines element hierarchy inconsistently with the US GAAP taxonomy. Specifically, this occurs when an element that should be a sibling in the US GAAP taxonomy is instead defined as a child of another element (or vice versa, a child element is incorrectly redefined as a sibling).\n\n(2) Inappropriateness  \n    Definition: A relationship is flagged as Inappropriateness when elements appear under an abstract category where they do not belong, contrary to the US GAAP taxonomy.\n\n(3) CombinationErr  \n    Definition: A relationship is flagged as CombinationErr when an axis in the filer\u2019s extension taxonomy is associated with inappropriate members not permitted by the US GAAP taxonomy.\n\nYou must reference the US GAAP taxonomy to retrieve and check the two concepts across the entire filing.\nOutput only one of the following labels exactly, chosen strictly from:\n[\"Reversal\", \"Inappropriateness\", \"CombinationErr\"].\n\nNo explanations. No extra text. Only the label.\n\n    \n##Schema document\nNone\n\n##Presentation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.westernalliancebancorp.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY\" xlink:type=\"simple\" xlink:href=\"wal-20230630.xsd#CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY\"/>\n  <link:presentationLink xlink:role=\"http://www.westernalliancebancorp.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementOfStockholdersEquityAbstract_f535dde8-4a93-477f-808c-049c56e3d093\" 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<link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_TreasuryStockMember_5309abf4-cefc-41e9-9da6-22ca6feaad53\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7d6e1b9c-eca9-44b0-8caa-bc5e0fa65785\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7d6e1b9c-eca9-44b0-8caa-bc5e0fa65785\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RetainedEarningsMember_34cd8379-55bf-4aa6-8208-ba7d4b535edf\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_RetainedEarningsMember_34cd8379-55bf-4aa6-8208-ba7d4b535edf\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockCommonMember_b1ddfbbb-fa3c-49d7-b27b-e65338272890\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonMember\"/>\n    <link:presentationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" 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xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_StatementLineItems_c1914fb3-f0e3-445f-a354-9213710b86af\" xlink:to=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharesIssued_5a59e93c-82bc-4de9-8e09-175cc33b332c\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssued\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" 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<link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_NetIncomeLoss_b3b34430-2397-4c5d-8fb0-f56ae8a484b7\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/verboseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_77736c4f-5474-4c19-a2d1-574f86027192\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" 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xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_5f67d692-9bf4-474f-87b7-90e0cecd10bc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues\"/>\n    <link:presentationArc order=\"9\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_5f67d692-9bf4-474f-87b7-90e0cecd10bc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsPreferredStockCash_8474ee68-3541-4f5d-8ae5-fd5438debcfd\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsPreferredStockCash\"/>\n    <link:presentationArc order=\"10\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_DividendsPreferredStockCash_8474ee68-3541-4f5d-8ae5-fd5438debcfd\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsCommonStockCash_ba9b53b1-280a-473f-b328-090996cdde07\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsCommonStockCash\"/>\n    <link:presentationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_DividendsCommonStockCash_ba9b53b1-280a-473f-b328-090996cdde07\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_d89abff0-4de1-4100-b139-27225294fb5f\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax\"/>\n    <link:presentationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_d89abff0-4de1-4100-b139-27225294fb5f\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharesIssued_c2fa68b7-ba0d-49e2-8eb8-adb45fa0345c\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssued\"/>\n    <link:presentationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_SharesIssued_c2fa68b7-ba0d-49e2-8eb8-adb45fa0345c\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/periodEndLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockholdersEquity_7e4a963c-5470-4722-85d9-d12e78a5b8ec\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity\"/>\n    <link:presentationArc order=\"14\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_StockholdersEquity_7e4a963c-5470-4722-85d9-d12e78a5b8ec\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/periodEndLabel\"/>\n  </link:presentationLink>\n  </link:linkbase>\n\n\n##Calculation linkbase document\n<?xml version='1.0' 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xlink:label=\"loc_us-gaap_SharesIssued_5a59e93c-82bc-4de9-8e09-175cc33b332c\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssued\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_SharesIssued_5a59e93c-82bc-4de9-8e09-175cc33b332c\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockholdersEquity_dd345b50-4da7-404f-bc0c-9222e6a5d712\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_StockholdersEquity_dd345b50-4da7-404f-bc0c-9222e6a5d712\" 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xlink:label=\"loc_us-gaap_TreasuryStockSharesAcquired_924dfa96-c442-4d0e-a231-baf794d7304f\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockSharesAcquired\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_TreasuryStockSharesAcquired_924dfa96-c442-4d0e-a231-baf794d7304f\" xlink:type=\"arc\" order=\"6\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockValueAcquiredCostMethod_18a74aa2-e451-44de-872f-8c4e50ab2c01\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_TreasuryStockValueAcquiredCostMethod_18a74aa2-e451-44de-872f-8c4e50ab2c01\" xlink:type=\"arc\" order=\"7\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_9778c95d-1474-4ce3-9a38-6d27a46d37e7\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_9778c95d-1474-4ce3-9a38-6d27a46d37e7\" xlink:type=\"arc\" order=\"8\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_5f67d692-9bf4-474f-87b7-90e0cecd10bc\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_5f67d692-9bf4-474f-87b7-90e0cecd10bc\" xlink:type=\"arc\" order=\"9\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsPreferredStockCash_8474ee68-3541-4f5d-8ae5-fd5438debcfd\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsPreferredStockCash\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_DividendsPreferredStockCash_8474ee68-3541-4f5d-8ae5-fd5438debcfd\" xlink:type=\"arc\" order=\"10\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsCommonStockCash_ba9b53b1-280a-473f-b328-090996cdde07\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsCommonStockCash\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_DividendsCommonStockCash_ba9b53b1-280a-473f-b328-090996cdde07\" xlink:type=\"arc\" order=\"11\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_d89abff0-4de1-4100-b139-27225294fb5f\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_b7b80767-1d3c-4386-83cf-81820b0115c6\" xlink:to=\"loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_d89abff0-4de1-4100-b139-27225294fb5f\" xlink:type=\"arc\" order=\"12\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharesIssued_c2fa68b7-ba0d-49e2-8eb8-adb45fa0345c\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssued\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockholdersEquity_7e4a963c-5470-4722-85d9-d12e78a5b8ec\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementTable_e4194abc-f070-42a6-b555-fd68003abe8b\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/all\" xlink:from=\"loc_us-gaap_StatementLineItems_c1914fb3-f0e3-445f-a354-9213710b86af\" xlink:to=\"loc_us-gaap_StatementTable_e4194abc-f070-42a6-b555-fd68003abe8b\" xlink:type=\"arc\" order=\"1\" xbrldt:closed=\"true\" xbrldt:contextElement=\"segment\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementEquityComponentsAxis_dca6cada-1b67-4890-b4ec-22a7f048afc7\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:from=\"loc_us-gaap_StatementTable_e4194abc-f070-42a6-b555-fd68003abe8b\" xlink:to=\"loc_us-gaap_StatementEquityComponentsAxis_dca6cada-1b67-4890-b4ec-22a7f048afc7\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityComponentDomain_dca6cada-1b67-4890-b4ec-22a7f048afc7_default\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:from=\"loc_us-gaap_StatementEquityComponentsAxis_dca6cada-1b67-4890-b4ec-22a7f048afc7\" xlink:to=\"loc_us-gaap_EquityComponentDomain_dca6cada-1b67-4890-b4ec-22a7f048afc7_default\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:from=\"loc_us-gaap_StatementEquityComponentsAxis_dca6cada-1b67-4890-b4ec-22a7f048afc7\" xlink:to=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PreferredStockMember_086e5473-8d49-42d3-b6dd-699d56bdb7a0\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PreferredStockMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_PreferredStockMember_086e5473-8d49-42d3-b6dd-699d56bdb7a0\" xlink:type=\"arc\" order=\"0\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockMember_cb92d5bc-1976-421d-89ef-46e83d199adf\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_CommonStockMember_cb92d5bc-1976-421d-89ef-46e83d199adf\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AdditionalPaidInCapitalMember_23d93987-b942-4db3-b3b0-b6f6bfa29a2d\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_AdditionalPaidInCapitalMember_23d93987-b942-4db3-b3b0-b6f6bfa29a2d\" xlink:type=\"arc\" order=\"2\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockMember_5309abf4-cefc-41e9-9da6-22ca6feaad53\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_TreasuryStockMember_5309abf4-cefc-41e9-9da6-22ca6feaad53\" xlink:type=\"arc\" order=\"3\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7d6e1b9c-eca9-44b0-8caa-bc5e0fa65785\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_7d6e1b9c-eca9-44b0-8caa-bc5e0fa65785\" xlink:type=\"arc\" order=\"4\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RetainedEarningsMember_34cd8379-55bf-4aa6-8208-ba7d4b535edf\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_RetainedEarningsMember_34cd8379-55bf-4aa6-8208-ba7d4b535edf\" xlink:type=\"arc\" order=\"5\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockCommonMember_b1ddfbbb-fa3c-49d7-b27b-e65338272890\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonMember\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_EquityComponentDomain_98f9224d-374b-4ff4-92d6-5b21b0990619\" xlink:to=\"loc_us-gaap_TreasuryStockCommonMember_b1ddfbbb-fa3c-49d7-b27b-e65338272890\" xlink:type=\"arc\" order=\"6\"/>\n  </link:definitionLink>\n  </link:linkbase>\n\n\n##Label linkbase document\n<?xml version='1.0' encoding='UTF-8'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodStartLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/netLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedNetLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodEndLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTotalLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel\"/>\n  <link:labelLink xlink:role=\"http://www.xbrl.org/2003/role/link\" xlink:type=\"extended\"><link:loc xlink:type=\"locator\" xlink:label=\"loc_wal_ATMOfferingMember\" xlink:href=\"wal-20230630.xsd#wal_ATMOfferingMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_wal_ATMOfferingMember\" xlink:to=\"lab_wal_ATMOfferingMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_wal_ATMOfferingMember_cc3d75c2-4cad-4fb3-8b86-65d4db21cccd_terseLabel_en-US\" xlink:label=\"lab_wal_ATMOfferingMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">ATM Offering</link:label>\n    <link:label id=\"lab_wal_ATMOfferingMember_label_en-US\" xlink:label=\"lab_wal_ATMOfferingMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">ATM Offering [Member]</link:label>\n    <link:label id=\"lab_wal_ATMOfferingMember_documentation_en-US\" xlink:label=\"lab_wal_ATMOfferingMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">ATM Offering of common shares</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RetirementPlanTypeAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_RetirementPlanTypeAxis\" xlink:to=\"lab_us-gaap_RetirementPlanTypeAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_RetirementPlanTypeAxis_b919b2af-5c57-46f9-8c3c-9169a492b1c0_terseLabel_en-US\" xlink:label=\"lab_us-gaap_RetirementPlanTypeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Retirement Plan Type [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_RetirementPlanTypeAxis_label_en-US\" xlink:label=\"lab_us-gaap_RetirementPlanTypeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Retirement Plan Type [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockValueAcquiredCostMethod\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_TreasuryStockValueAcquiredCostMethod\" xlink:to=\"lab_us-gaap_TreasuryStockValueAcquiredCostMethod\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_TreasuryStockValueAcquiredCostMethod_f91a9531-0c93-4992-84f6-0bef94963e0d_terseLabel_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockValueAcquiredCostMethod\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock, Value, Acquired, Cost Method</link:label>\n    <link:label id=\"lab_us-gaap_TreasuryStockValueAcquiredCostMethod_label_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockValueAcquiredCostMethod\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock, Value, Acquired, Cost Method</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:to=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_7ec32b90-5a3e-40a9-b42a-52eda75ef163_terseLabel_en-US\" xlink:label=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Unrealized holding gains (losses) on AFS</link:label>\n    <link:label id=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_bdc816a7-9343-425d-bb21-ba652064bef8_verboseLabel_en-US\" xlink:label=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]</link:label>\n    <link:label id=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_label_en-US\" xlink:label=\"lab_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementOfStockholdersEquityAbstract\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfStockholdersEquityAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StatementOfStockholdersEquityAbstract\" xlink:to=\"lab_us-gaap_StatementOfStockholdersEquityAbstract\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StatementOfStockholdersEquityAbstract_60b418bd-5e96-4660-8fea-98dc48fe970d_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StatementOfStockholdersEquityAbstract\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Statement of Stockholders' Equity [Abstract]</link:label>\n    <link:label id=\"lab_us-gaap_StatementOfStockholdersEquityAbstract_label_en-US\" xlink:label=\"lab_us-gaap_StatementOfStockholdersEquityAbstract\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Statement of Stockholders' Equity [Abstract]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_TreasuryStockMember\" xlink:to=\"lab_us-gaap_TreasuryStockMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_TreasuryStockMember_8be59a8b-a12f-4e36-8817-b8ea98812ef1_terseLabel_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock [Member]</link:label>\n    <link:label id=\"lab_us-gaap_TreasuryStockMember_label_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock [Member] (Deprecated 2023)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NetIncomeLoss\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_NetIncomeLoss\" xlink:to=\"lab_us-gaap_NetIncomeLoss\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_NetIncomeLoss_cdf83854-445b-4ecf-89cd-4fbb16768c66_totalLabel_en-US\" xlink:label=\"lab_us-gaap_NetIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Net income</link:label>\n    <link:label id=\"lab_us-gaap_NetIncomeLoss_8cc2860d-c832-4429-bd74-30c56f46cbd3_verboseLabel_en-US\" xlink:label=\"lab_us-gaap_NetIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Net income</link:label>\n    <link:label id=\"lab_us-gaap_NetIncomeLoss_c2a75124-0d38-4b5e-8e6c-5d0112ac36ac_terseLabel_en-US\" xlink:label=\"lab_us-gaap_NetIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Net income</link:label>\n    <link:label id=\"lab_us-gaap_NetIncomeLoss_label_en-US\" xlink:label=\"lab_us-gaap_NetIncomeLoss\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Net Income (Loss)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StockIssuedDuringPeriodValueNewIssues\" xlink:to=\"lab_us-gaap_StockIssuedDuringPeriodValueNewIssues\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_55eccdd7-56f9-4350-9a13-d52fcfe2a2d4_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodValueNewIssues\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Issued During Period, Value, New Issues</link:label>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_label_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodValueNewIssues\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Issued During Period, Value, New Issues</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_CommonStockMember\" xlink:to=\"lab_us-gaap_CommonStockMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_CommonStockMember_e3ecc64b-7b83-4846-9dc8-ea9d841307e7_terseLabel_en-US\" xlink:label=\"lab_us-gaap_CommonStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Common Stock [Member]</link:label>\n    <link:label id=\"lab_us-gaap_CommonStockMember_label_en-US\" xlink:label=\"lab_us-gaap_CommonStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Common Stock [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\" xlink:to=\"lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_2d918f65-2a46-490c-b922-6648b8222d1f_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Restricted stock grants, net, shares</link:label>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_label_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RetainedEarningsMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_RetainedEarningsMember\" xlink:to=\"lab_us-gaap_RetainedEarningsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_RetainedEarningsMember_7d14d0a8-ea19-4ce3-96f0-3c38dea21fb8_terseLabel_en-US\" xlink:label=\"lab_us-gaap_RetainedEarningsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Retained Earnings [Member]</link:label>\n    <link:label id=\"lab_us-gaap_RetainedEarningsMember_label_en-US\" xlink:label=\"lab_us-gaap_RetainedEarningsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Retained Earnings [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AdditionalPaidInCapitalMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AdditionalPaidInCapitalMember\" xlink:to=\"lab_us-gaap_AdditionalPaidInCapitalMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AdditionalPaidInCapitalMember_57416013-e650-4cdb-b0c6-92d923ab6f90_terseLabel_en-US\" xlink:label=\"lab_us-gaap_AdditionalPaidInCapitalMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Additional Paid in Capital [Member]</link:label>\n    <link:label id=\"lab_us-gaap_AdditionalPaidInCapitalMember_label_en-US\" xlink:label=\"lab_us-gaap_AdditionalPaidInCapitalMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Additional Paid-in Capital [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OperatingSegmentsMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_OperatingSegmentsMember\" xlink:to=\"lab_us-gaap_OperatingSegmentsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_OperatingSegmentsMember_396ef9a3-5560-42ef-ab3c-dd5a9f330cc1_terseLabel_en-US\" xlink:label=\"lab_us-gaap_OperatingSegmentsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Segments [Member]</link:label>\n    <link:label id=\"lab_us-gaap_OperatingSegmentsMember_label_en-US\" xlink:label=\"lab_us-gaap_OperatingSegmentsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Operating Segments [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_wal_ConsumerRelatedSegmentMember\" xlink:href=\"wal-20230630.xsd#wal_ConsumerRelatedSegmentMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_wal_ConsumerRelatedSegmentMember\" xlink:to=\"lab_wal_ConsumerRelatedSegmentMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_wal_ConsumerRelatedSegmentMember_285c2b7a-96f2-41a1-bbf3-0b483fd2a0dc_terseLabel_en-US\" xlink:label=\"lab_wal_ConsumerRelatedSegmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Consumer Related Segment</link:label>\n    <link:label id=\"lab_wal_ConsumerRelatedSegmentMember_label_en-US\" xlink:label=\"lab_wal_ConsumerRelatedSegmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Consumer Related Segment [Member]</link:label>\n    <link:label id=\"lab_wal_ConsumerRelatedSegmentMember_documentation_en-US\" xlink:label=\"lab_wal_ConsumerRelatedSegmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Consumer Related Segment</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_TreasuryStockSharesAcquired\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockSharesAcquired\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_TreasuryStockSharesAcquired\" xlink:to=\"lab_us-gaap_TreasuryStockSharesAcquired\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_TreasuryStockSharesAcquired_fd15f68e-e57c-467c-b380-1165c4360c42_terseLabel_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockSharesAcquired\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock, Shares, Acquired</link:label>\n    <link:label id=\"lab_us-gaap_TreasuryStockSharesAcquired_label_en-US\" xlink:label=\"lab_us-gaap_TreasuryStockSharesAcquired\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Treasury Stock, Shares, Acquired</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsCommonStockCash\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsCommonStockCash\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_DividendsCommonStockCash\" xlink:to=\"lab_us-gaap_DividendsCommonStockCash\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_DividendsCommonStockCash_1d8f3615-0fb9-4a7c-ab78-52d09bed206b_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_DividendsCommonStockCash\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Dividends, Common Stock, Cash</link:label>\n    <link:label id=\"lab_us-gaap_DividendsCommonStockCash_99fec381-65a6-4326-b2de-85150fd30d86_terseLabel_en-US\" xlink:label=\"lab_us-gaap_DividendsCommonStockCash\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Dividends, Common Stock, Cash</link:label>\n    <link:label id=\"lab_us-gaap_DividendsCommonStockCash_label_en-US\" xlink:label=\"lab_us-gaap_DividendsCommonStockCash\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Dividends, Common Stock, Cash</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\" xlink:to=\"lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_31235e6c-8c80-4fca-a7c8-303f630929c4_terseLabel_en-US\" xlink:label=\"lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Impairment loss on securities</link:label>\n    <link:label id=\"lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember_label_en-US\" xlink:label=\"lab_us-gaap_AccumulatedOtherThanTemporaryImpairmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Accumulated Other-than-Temporary Impairment Attributable to Parent [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EquityComponentDomain\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_EquityComponentDomain\" xlink:to=\"lab_us-gaap_EquityComponentDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_EquityComponentDomain_830837d6-3a5d-4e61-92dd-f62d4b28480f_terseLabel_en-US\" xlink:label=\"lab_us-gaap_EquityComponentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity Component [Domain]</link:label>\n    <link:label id=\"lab_us-gaap_EquityComponentDomain_label_en-US\" xlink:label=\"lab_us-gaap_EquityComponentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity Component [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CorporateNonSegmentMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_CorporateNonSegmentMember\" xlink:to=\"lab_us-gaap_CorporateNonSegmentMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_CorporateNonSegmentMember_e6c55343-27e2-4084-b23d-db9f38cdbd74_terseLabel_en-US\" xlink:label=\"lab_us-gaap_CorporateNonSegmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Corporate &amp; Other</link:label>\n    <link:label id=\"lab_us-gaap_CorporateNonSegmentMember_label_en-US\" xlink:label=\"lab_us-gaap_CorporateNonSegmentMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Corporate, Non-Segment [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:to=\"lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_5b88dc46-6b2e-431a-9703-da24e19b58e1_terseLabel_en-US\" xlink:label=\"lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Accumulated Other Comprehensive Income (Loss) [Member]</link:label>\n    <link:label id=\"lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_label_en-US\" xlink:label=\"lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">AOCI Attributable to Parent [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharesIssued\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssued\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SharesIssued\" xlink:to=\"lab_us-gaap_SharesIssued\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SharesIssued_837501d0-eac3-492d-8d3c-0f0fc489855e_periodStartLabel_en-US\" xlink:label=\"lab_us-gaap_SharesIssued\" xlink:role=\"http://www.xbrl.org/2003/role/periodStartLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Beginning balance, shares</link:label>\n    <link:label id=\"lab_us-gaap_SharesIssued_9d6c2b0e-9648-4c9a-8e20-080382093b81_periodEndLabel_en-US\" xlink:label=\"lab_us-gaap_SharesIssued\" xlink:role=\"http://www.xbrl.org/2003/role/periodEndLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Ending balance, shares</link:label>\n    <link:label id=\"lab_us-gaap_SharesIssued_label_en-US\" xlink:label=\"lab_us-gaap_SharesIssued\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Shares, Issued</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockholdersEquity\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StockholdersEquity\" xlink:to=\"lab_us-gaap_StockholdersEquity\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StockholdersEquity_135a924b-ea2f-4494-b02e-3a266b83232b_totalLabel_en-US\" xlink:label=\"lab_us-gaap_StockholdersEquity\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Total stockholders\u2019 equity</link:label>\n    <link:label id=\"lab_us-gaap_StockholdersEquity_7a928463-033d-4991-a999-49dc15c16e94_periodStartLabel_en-US\" xlink:label=\"lab_us-gaap_StockholdersEquity\" xlink:role=\"http://www.xbrl.org/2003/role/periodStartLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Beginning balance</link:label>\n    <link:label id=\"lab_us-gaap_StockholdersEquity_6dcc752f-aaaf-482c-ace8-4cac8330f3b2_periodEndLabel_en-US\" xlink:label=\"lab_us-gaap_StockholdersEquity\" xlink:role=\"http://www.xbrl.org/2003/role/periodEndLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Ending Balance</link:label>\n    <link:label id=\"lab_us-gaap_StockholdersEquity_b29ee571-bd25-44e3-bf7a-f01ebef1289d_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StockholdersEquity\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stockholders' equity</link:label>\n    <link:label id=\"lab_us-gaap_StockholdersEquity_label_en-US\" xlink:label=\"lab_us-gaap_StockholdersEquity\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity, Attributable to Parent</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementTable\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StatementTable\" xlink:to=\"lab_us-gaap_StatementTable\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StatementTable_2eebe67e-eb6e-45c2-9d1d-346a1a7177bc_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StatementTable\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Statement [Table]</link:label>\n    <link:label id=\"lab_us-gaap_StatementTable_label_en-US\" xlink:label=\"lab_us-gaap_StatementTable\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Statement [Table]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues\" xlink:to=\"lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_eb779400-878d-4419-ac4e-73d521bd3947_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Issued During Period, Shares, New Issues</link:label>\n    <link:label id=\"lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_label_en-US\" xlink:label=\"lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Issued During Period, Shares, New Issues</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DividendsPreferredStockCash\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DividendsPreferredStockCash\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_DividendsPreferredStockCash\" xlink:to=\"lab_us-gaap_DividendsPreferredStockCash\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_DividendsPreferredStockCash_07e1ebfd-9699-47b1-bce7-4700ce99798a_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_DividendsPreferredStockCash\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Dividends, Preferred Stock, Cash</link:label>\n    <link:label id=\"lab_us-gaap_DividendsPreferredStockCash_label_en-US\" xlink:label=\"lab_us-gaap_DividendsPreferredStockCash\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Dividends, Preferred Stock, Cash</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\" xlink:to=\"lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_45c96b11-925d-427c-9784-5520da639b11_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Supplemental Employee Retirement Plan [Member]</link:label>\n    <link:label id=\"lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_label_en-US\" xlink:label=\"lab_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Supplemental Employee Retirement Plan [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementEquityComponentsAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StatementEquityComponentsAxis\" xlink:to=\"lab_us-gaap_StatementEquityComponentsAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StatementEquityComponentsAxis_d66a8783-2e46-431b-a1f0-3f7e99516b32_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StatementEquityComponentsAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity Components [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_StatementEquityComponentsAxis_label_en-US\" xlink:label=\"lab_us-gaap_StatementEquityComponentsAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Equity Components [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_StatementBusinessSegmentsAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_StatementBusinessSegmentsAxis\" xlink:to=\"lab_us-gaap_StatementBusinessSegmentsAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_StatementBusinessSegmentsAxis_2a84ce02-70b1-4267-81f5-c062e9d2f932_terseLabel_en-US\" xlink:label=\"lab_us-gaap_StatementBusinessSegmentsAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segments [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_StatementBusinessSegmentsAxis_label_en-US\" xlink:label=\"lab_us-gaap_StatementBusinessSegmentsAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segments [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_wal_CommercialSegmentMember\" xlink:href=\"wal-20230630.xsd#wal_CommercialSegmentMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_wal_CommercialSegmentMember\" xlink:to=\"lab_wal_CommercialSegmentMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_wal_CommercialSegmen\n\n##Instance document\n<?xml version='1.0' encoding='UTF-8'?>\n<xbrl xmlns=\"http://www.xbrl.org/2003/instance\" xmlns:dei=\"http://xbrl.sec.gov/dei/2023\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:srt=\"http://fasb.org/srt/2023\" xmlns:us-gaap=\"http://fasb.org/us-gaap/2023\" xmlns:wal=\"http://www.westernalliancebancorp.com/20230630\" xmlns:xbrldi=\"http://xbrl.org/2006/xbrldi\" xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xml:lang=\"en-US\"><link:schemaRef xlink:href=\"wal-20230630.xsd\" xlink:type=\"simple\"/>\n\t<context id=\"c-10\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:PreferredStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2022-03-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-11\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                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</period>\n    </context>\n\t<context id=\"c-1057\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:OperatingSegmentsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementBusinessSegmentsAxis\">wal:ConsumerRelatedSegmentMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-1058\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:CorporateNonSegmentMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-18\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:CommonStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-04-01</startDate>\n            <endDate>2022-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-37\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:CommonStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-55\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:CommonStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-01-01</startDate>\n            <endDate>2022-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-66\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:CommonStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-19\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2022-04-01</startDate>\n            <endDate>2022-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-38\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-56\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001212545</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:StatementEquityComponentsAxis\">us-gaap:AdditionalPaidInCapital\n\n##US GAAP Taxonomy\nNone\n\nQuestion: What erroneous relationship type exists between StatementEquityComponentsAxis and TreasuryStockMember, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "CombinationErr"