CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 5,365	$ 865	$ (189)
Defined benefit plans:
Actuarial gains (losses) arising during the period, net of taxes	179	46	(116)
Amortization or curtailment of unrecognized amounts included in net periodic benefit costs	18	45	47
Foreign exchange (losses) gains	(1)	(1)	1
Other comprehensive income (loss)	196	90	(68)
Total comprehensive income (loss)	5,561	955	(257)
Total comprehensive income attributable to noncontrolling interests	(1,060)	(263)	(53)
Total comprehensive income (loss) attributable to common stockholders	$ 4,501	$ 692	$ (310)