| **DERIVATIVES (Derivatives Designated in Hedge Relationships) (Details) - Designated as hedging instrument - USD ($) $ in Thousands** | 12 Months Ended  |
|---------------------------------------------------------------------------------------------------------------------------------------|------------------|
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| **Derivative [Line Items]**                                                                                                           |             |   |
| Notional Amount                                                                                                                       | $ 11,364,821     | $ 10,361,333 |
| Asset, Total                                                                                                                          | 11,037           | 10,562 |
| Liability, Total                                                                                                                      | $ 25,145         | $ 22,311 |
| Weighted Average Receive Rate                                                                                                         | 0.35%            | 0.19% |
| Weighted Average Pay Rate                                                                                                             | 1.17%            | 1.14% |
| Weighted Average                                                                                                                      |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Weighted Average Life (Years)                                                                                                         | 3 years 5 days   | 3 years 18 days |
| Fair value hedges | Cross-currency swaps                                                                                              |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Notional Amount                                                                                                                       | $ 16,390         | $ 18,230 |
| Asset, Cross-currency swaps                                                                                                           | 3,695            | 2,711 |
| Liability, Cross-currency swaps                                                                                                       | $ 92             | $ 980 |
| Weighted Average Receive Rate                                                                                                         | 4.76%            | 4.76% |
| Weighted Average Pay Rate                                                                                                             | 4.75%            | 4.75% |
| Fair value hedges | Cross-currency swaps | Weighted Average                                                                           |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Weighted Average Life (Years)                                                                                                         | 1 month 8 days   | 1 year 1 month 9 days |
| Fair value hedges | Interest rate swaps                                                                                               |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Notional Amount                                                                                                                       | $ 318,000        | $ 257,000 |
| Asset, Interest rate swaps                                                                                                            | 47               | 232 |
| Liability, Interest rate swaps                                                                                                        | $ 2,006          | $ 779 |
| Weighted Average Receive Rate                                                                                                         | 1.07%            | 0.90% |
| Weighted Average Pay Rate                                                                                                             | 2.31%            | 2.38% |
| Fair value hedges | Interest rate swaps | Weighted Average                                                                            |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Weighted Average Life (Years)                                                                                                         | 3 years 6 months | 4 years 3 months 29 days |
| Cash flow hedges | Interest rate swaps                                                                                                |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Notional Amount                                                                                                                       | $ 11,030,431     | $ 10,086,103 |
| Asset, Pay fixed — receive floating interest rate swaps                                                                         | 7,295            | 7,619 |
| Liability, Pay fixed — receive floating interest rate swaps                                                                     | $ 23,047         | $ 20,552 |
| Weighted Average Receive Rate                                                                                                         | 0.32%            | 0.17% |
| Weighted Average Pay Rate                                                                                                             | 1.13%            | 1.11% |
| Cash flow hedges | Interest rate swaps | Weighted Average                                                                             |             |   |
| **Derivative [Line Items]**                                                                                                           |             |   |
| Weighted Average Life (Years)                                                                                                         | 3 years          | 3 years 8 days |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B
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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
No definition available.
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| X                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Average variable interest rate related to the group of interest rate derivatives.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611
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| X                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all derivative assets designated as foreign currency fair value hedging instruments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959
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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
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all derivative assets designated as interest rate fair value hedging instruments.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Fair value as of the balance sheet date of all derivative liabilities designated as interest rate fair value hedging instruments.
+ References
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| X                                                                                                                                                                  |
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| X                                                                                                                                       |
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| X                                                                                                                                                       |
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| X                                                                                                                                                                                    |
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