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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Amounts Recorded on Balance Sheet Related to Fixed-to-Floating Interest Rate Swaps (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Interest rate swaps |  |
Derivative [Line Items] |  |
Carrying amount of the hedged assets (liabilities) | $ (2,413) | $ (2,688)
Long-term debt |  |
Derivative [Line Items] |  |
Discontinued hedge, cumulative adjustment | 33 | 37
Long-term debt | Interest rate swaps |  |
Derivative [Line Items] |  |
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged asset (liabilities) | $ (84) | $ (139)

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- Definition Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk, remaining after discontinued hedge. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109999712-113959 + Details
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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109999712-113959 + Details
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