Condensed Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Noncontrolling Interests Preferred Stock
Balance at beginning of period at Dec. 31, 2020	$ 0
Balance at end of period at Mar. 31, 2021	0
Balance at beginning of period at Dec. 31, 2020	49,677		$ 14	$ 26,542	$ 31,962	$ (13,488)	$ 4,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,014				3,022		(8)
Other comprehensive income (loss)	155					162	(7)
Issuance (redemption) of subsidiary preferred stock (Note 16)		$ 1,537						$ 1,537
Stock based compensation	132			132
Dividends to noncontrolling interests	(61)						(61)
Other	(11)			(7)	4		(8)
Balance at end of period at Mar. 31, 2021	54,443		14	26,667	34,988	(13,326)	6,100
Balance at beginning of period at Dec. 31, 2021	0
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock based compensation	289
Balance at end of period at Mar. 31, 2022	289
Balance at beginning of period at Dec. 31, 2021	65,815		15	27,061	41,937	(9,269)	6,071
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,807				2,939		(131)
Other comprehensive income (loss)	442					456	(13)
Issuance (redemption) of subsidiary preferred stock (Note 16)		$ (2,124)			(909)			$ (1,215)
Stock based compensation	(32)			(31)	(1)
Dividends to noncontrolling interests	(14)				(12)		(1)
Other	(120)			(15)	(74)		(31)
Balance at end of period at Mar. 31, 2022	$ 66,774		$ 15	$ 27,015	$ 43,879	$ (8,814)	$ 4,679