OTHER ASSETS - Summarized Financial Information, Equity Method Investments (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues, net	$ 1,476	$ 1,535	$ 1,612	$ 1,511	$ 1,512	$ 1,539	$ 1,283	$ 1,609	$ 6,134	$ 5,943	$ 4,240
Operating income	165	$ 73	$ (178)	$ 35	625	$ (4,216)	$ 492	$ 327	95	(2,772)	470
Net income									(326)	(2,429)	105
Assets And Liabilities [Abstract]
Current assets	2,471				3,217				2,471	3,217
Current liabilities	1,202				1,034				1,202	1,034
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Income Statement [Abstract]
Revenues, net									994	611	386
Operating income									316	147	47
Net income									465	23	$ 13
Assets And Liabilities [Abstract]
Current assets	468				493				468	493
Noncurrent assets	4,259				4,219				4,259	4,219
Current liabilities	184				410				184	410
Noncurrent liabilities	$ 2,030				$ 2,327				$ 2,030	$ 2,327