| **BUSINESS COMBINATIONS (As Restated) (Pro Forma Information) (Details) - USD ($) $ in Thousands** | 3 Months Ended | 9 Months Ended |
|----------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **SCUSA Amounts Included in Results for the**                                                      |           |           |   |   |
| Total Revenue, Net of Total Interest Expense                                                       | $ 1,633,889    | $ 1,616,003    | $ 4,983,725 | $ 4,348,178 |
| SCUSA                                                                                              |           |           |   |   |
| **SCUSA Amounts Included in Results for the**                                                      |           |           |   |   |
| Total Revenue, Net of Total Interest Expense                                                       |           | 1,534,644      |   | 4,112,641 |
| Net Income including Noncontrolling Interest                                                       |           | 280,138        |   | 925,556 |
| **Supplemental Pro Forma Combined**                                                                |           |           |   |   |
| Total Revenue, Net of Total Interest Expense                                                       |           | 2,232,312      |   | 6,239,871 |
| Net Income including Noncontrolling Interest                                                       |           | $ 289,417      |   | $ 655,055 |

| X                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Business Combination, Pro Forma Interest Income (Expense), Net
+ References
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| X                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The consolidated profit or loss for the period including the portion attributable to the noncontrolling interest.
+ References
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| X                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The net amount of operating interest income (expense).
+ References
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| X                                                                                                                                       |
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