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 |