Annual report pursuant to Section 13 and 15(d)

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Assets (Details)

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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Total other intangible assets, gross carrying amount $ 411 $ 425
Total other intangible assets, accumulated amortization (220) (193)
Total other intangible assets, net of carrying value 191 232
Core deposit intangible    
Finite-Lived Intangible Assets [Line Items]    
Total other intangible assets, gross carrying amount 310 310
Total other intangible assets, accumulated amortization (150) (120)
Total other intangible assets, net of carrying value 160 190
Customer relationship    
Finite-Lived Intangible Assets [Line Items]    
Total other intangible assets, gross carrying amount 101 115
Total other intangible assets, accumulated amortization (70) (73)
Total other intangible assets, net of carrying value $ 31 $ 42