ACQUISITION OF TCF FINANCIAL CORPORATION - Pro Forma (Details) - TCF Financial Corporation - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Business Acquisition [Line Items] | ||||
| Business Acquisition, Pro Forma Net Income (Loss) | $ 377 | $ 364 | $ 1,268 | $ 433 |
| Interest and dividend income operating [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Business Acquisition, Pro Forma Revenue | 1,160 | 1,197 | 3,625 | 3,581 |
| Noninterest income [Member] | ||||
| Business Acquisition [Line Items] | ||||
| Business Acquisition, Pro Forma Revenue | $ 535 | $ 554 | $ 1,604 | $ 1,586 |
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- 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. No definition available.
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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