| Label                                                                   | **Element**                                                                                              | Value         |
|-------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|---------------|
| Dividends, Common Stock, Cash                                           | us-gaap_DividendsCommonStockCash                                                                         | $ 49,000,000  |
| Dividends, Common Stock, Cash                                           | us-gaap_DividendsCommonStockCash                                                                         | 53,000,000    |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents                                    | 5,260,000,000 |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents                                    | 2,732,000,000 |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition    | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 125,000,000   |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition    | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 125,000,000   |
| Stock Issued During Period, Value, New Issues                           | us-gaap_StockIssuedDuringPeriodValueNewIssues                                                            | (105,000,000) |
| Stock Issued During Period, Value, New Issues                           | us-gaap_StockIssuedDuringPeriodValueNewIssues                                                            | (103,000,000) |
| Stock Issued During Period, Value, Acquisitions                         | us-gaap_StockIssuedDuringPeriodValueAcquisitions                                                         | 23,000,000    |
| Retained Earnings [Member]                                              |                                                                                                          |          |
| Dividends, Common Stock, Cash                                           | us-gaap_DividendsCommonStockCash                                                                         | 49,000,000    |
| Dividends, Common Stock, Cash                                           | us-gaap_DividendsCommonStockCash                                                                         | 53,000,000    |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent         | us-gaap_ComprehensiveIncomeNetOfTax                                                                      | 311,000,000   |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent         | us-gaap_ComprehensiveIncomeNetOfTax                                                                      | 204,000,000   |
| Stock Repurchased and Retired During Period, Value                      | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue                                                      | 282,000,000   |
| Stock Repurchased and Retired During Period, Value                      | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue                                                      | $ 298,000,000 |
| Common Stock [Member]                                                   |                                                                                                          |          |
| Stock Issued During Period, Shares, New Issues                          | us-gaap_StockIssuedDuringPeriodSharesNewIssues                                                           | 1,209,000     |
| Stock Issued During Period, Shares, New Issues                          | us-gaap_StockIssuedDuringPeriodSharesNewIssues                                                           | 1,413,000     |
| Stock Repurchased and Retired During Period, Shares                     | us-gaap_StockRepurchasedAndRetiredDuringPeriodShares                                                     | 2,292,000     |
| Stock Repurchased and Retired During Period, Shares                     | us-gaap_StockRepurchasedAndRetiredDuringPeriodShares                                                     | 2,512,000     |
| Additional Paid-in Capital [Member]                                     |                                                                                                          |          |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition    | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | $ 125,000,000 |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition    | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 125,000,000   |
| Stock Repurchased and Retired During Period, Value                      | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue                                                      | 22,000,000    |
| Stock Repurchased and Retired During Period, Value                      | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue                                                      | 43,000,000    |
| Stock Issued During Period, Value, New Issues                           | us-gaap_StockIssuedDuringPeriodValueNewIssues                                                            | (103,000,000) |
| Stock Issued During Period, Value, New Issues                           | us-gaap_StockIssuedDuringPeriodValueNewIssues                                                            | (105,000,000) |
| Stock Issued During Period, Value, Acquisitions                         | us-gaap_StockIssuedDuringPeriodValueAcquisitions                                                         | 23,000,000    |
| AOCI Attributable to Parent [Member]                                    |                                                                                                          |          |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent         | us-gaap_ComprehensiveIncomeNetOfTax                                                                      | 15,000,000    |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent         | us-gaap_ComprehensiveIncomeNetOfTax                                                                      | $ 56,000,000  |

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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
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| - Definition
Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of new stock issued during the period.
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| - Definition
Value of stock issued pursuant to acquisitions during the period.
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| - Definition
Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
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| - Definition
Number of shares that have been repurchased and retired during the period.
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| - Definition
Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).
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