DERIVATIVES AND HEDGING - SUCCESSOR COMPANY - Cash Flow Hedges in AOCI (Details) - Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivatives Used in Cash Flow Hedge [Roll Forward]
Cash flow hedges in AOCI, beginning balance	$ 25	$ (43)	$ 0
Cash flow hedges in AOCI, ending balance	29	25	(43)
Currency/Interest Rate
Derivatives Used in Cash Flow Hedge [Roll Forward]
Other comprehensive income (loss), amount recorded in AOCI	9	102	(48)
Gain (loss) reclassified from AOCI into income	$ (5)	$ (34)	$ 5

Amount, before tax and reclassification adjustment, of unrealized gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (d)(1)
-URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=123594809&loc=SL75136633-108610

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (l)
-URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580

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