| **OTHER ASSETS (Other Assets Schedule) (Details) - USD ($) $ in Thousands**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Sep. 30, 2016 | Jun. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Dec. 31, 2014 |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|---------------|---------------|---------------|
| **Servicing Assets [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |               |          |          |          |          |          |   |
| Income tax receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |               | $ 452,266     |          | $ 634,262     |          |          |   |
| Derivative assets at fair value                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |               | 494,803       |          | 383,034       |          |          |   |
| Other repossessed assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |               | 195,376       |          | 172,749       |          |          |   |
| Prepaid expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |               | 172,030       |          | 182,069       |          |          |   |
| OREO                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |               | 115,308       |          | 117,746       |          |          |   |
| Miscellaneous assets and receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |               | 702,586       |          | 493,477       |          |          |   |
| Other assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | [1],[2]       | 2,262,291     |          | 2,134,827     |          |          |   |
| Residential MSRs                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |               |          |          |          |          |          |   |
| **Servicing Assets [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |               |          |          |          |          |          |   |
| MSRs                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |               | $ 126,114     | $ 117,792     | $ 147,233     | $ 143,535     | $ 157,147     | $ 145,047 |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| [1]Includes mortgage servicing rights ("MSRs") of $129.9 million and $151.5 million at September 30, 2016 and December 31, 2015, respectively, for which the Company has elected the FVO. See Note 8 to these Condensed Consolidated Financial Statements for additional information.[2]The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. The Company consolidates VIEs where it is deemed the primary beneficiary. See Note 6 to these Condensed Consolidated Financial Statements for additional information. |

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| - Definition
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.
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| - Definition
Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.
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Amount of assets classified as other.
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Amount of other miscellaneous assets.
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| - Definition
Carrying amount as of the balance sheet date of assets other than real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance.
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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.
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Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.
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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.
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