| **DERIVATIVES (Details) (USD $)**                                                            | 3 Months Ended | 6 Months Ended |                |     |               | 6 Months Ended | 12 Months Ended | 6 Months Ended           | 12 Months Ended          | 6 Months Ended         | 12 Months Ended        |                         |
|----------------------------------------------------------------------------------------------|----------------|----------------|----------------|-----|---------------|----------------|-----------------|--------------------------|--------------------------|------------------------|------------------------|-------------------------|
||
| **Derivative, Credit Risk Related Contingent Features [Abstract]**                           |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Fair value of derivatives with credit risk contingent feature associated with credit ratings | $ 27,200,000   | $ 27,200,000   |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Additional collateral required                                                               |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   | 4,300,000 | 4,500,000 |
| Fair value of derivatives with credit risk contingent features                               | 164,800,000    | 164,800,000    | 198,800,000    |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Collateral posted                                                                            | 165,900,000    | 165,900,000    | 203,900,000    |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| **Summary of Fair Value Hedge Activity [Abstract]**                                          |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Deferred loss on discontinuation of fair value hedge                                         | 11,700,000     | 11,700,000     |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Amortization of deferred hedge gains                                                         | 700,000        | 1,300,000      |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| **Summary of Cash Flow Hedge Activity [Abstract]**                                           |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Cash flow hedge loss to be reclassified within next twelve months                            |           | 8,500,000      |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| **Summary of Derivative Instruments [Abstract]**                                             |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    |   |   |   |   |
| Notional Amount                                                                              | 33,252,517,000 | 33,252,517,000 | 14,748,036,000 | [1] | 3,168,861,000 | 0              | [1]             | 9,235,041,000            | 2,720,307,000            | 20,540,000             | 19,995,000             | 190,000,000             | 9,024,501,000 | 2,700,312,000 |   |   |
| Fair value hedges, Asset                                                                     |           |           |           |     |          |           |                 |                     |                     | 843,000                | 1,073,000              | 12,000                  |   |   |   |   |
| Cash flow hedges, Asset                                                                      |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    | 2,102,000 | 4,803,000 |   |   |
| Total, Asset                                                                                 |           |           |           |     |          |           |                 | 2,957,000                | 5,876,000                |                   |                   |                    |   |   |   |   |
| Fair value hedges, Liability                                                                 |           |           |           |     |          |           |                 |                     |                     | 1,538,000              | 1,924,000              | 765,000                 |   |   |   |   |
| Cash flow hedges, Liability                                                                  |           |           |           |     |          |           |                 |                     |                     |                   |                   |                    | 44,281,000 | 58,381,000 |   |   |
| Total, Liability                                                                             |           |           |           |     |          |           |                 | $ 46,584,000             | $ 60,305,000             |                   |                   |                    |   |   |   |   |
| Weighted Average Receive Rate                                                                |           |           |           |     |          |           |                 | 0.13%                    | 0.27%                    | 4.76%                  | 4.76%                  | 0.89%                   | 0.10% | 0.24% |   |   |
| Weighted Average Pay Rate                                                                    |           |           |           |     |          |           |                 | 0.54%                    | 2.47%                    | 4.75%                  | 4.75%                  | 2.36%                   | 0.49% | 2.46% |   |   |
| Weighted Average Life (Years)                                                                |           |           |           |     |          |           |                 | 2 years 3 months 25 days | 1 year 10 months 24 days | 1 year 7 months 9 days | 2 years 1 month 9 days | 4 years 8 months 4 days | 2 years 3 months 7 days | 1 year 10 months 20 days |   |   |
|                                                                                              |
| [1]Balances at December 31, 2013 do not include SCUSA.                                       |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value of derivatives with contingent features affected by the downgrade of credit rating of the entity.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of expense charged against earnings by an Entity to record deferred gains and losses on hedge instruments. Examples include gain on economic hedges, amortization of gain on designated fair value hedge and so forth.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective fair value hedge that is amortized upon discontinuation of the fair value hedge.
+ References
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| X                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Average fixed interest rate related to the group of interest rate derivatives.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
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| X                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Average variable interest rate related to the group of interest rate derivatives.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| - Definition
Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.
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| - Definition
Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
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| - Definition
Fair value as of the balance sheet date of all derivative assets designated as foreign currency fair value hedging instruments.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all derivative liabilities designated as foreign currency fair value hedging instruments.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments.
+ References
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| - Definition
Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.
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