Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Long-term Income Tax Receivable	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net	Noncontrolling Interest
Balance at Dec. 31, 2021	$ 50,589	$ 1,650	$ 0	$ 6,374	$ (744)	$ 40,754	$ (1,340)	$ 3,895
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,997					2,768		229
Other comprehensive income (loss)	(448)						(448)
Preferred stock redemptions	(800)	(800)
Preferred stock dividend	(29)					(29)
Common stock purchases	(870)			(77)		(793)
Distributions	(245)							(245)
Contributions	2							2
Other equity transactions	(5)			1		(12)		6
Balance at Jun. 30, 2022	51,191	850	0	6,298	(744)	42,688	(1,788)	3,887
Balance at Mar. 31, 2022	50,424	1,650	0	6,374	(744)	40,608	(1,358)	3,894
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,017					2,897		120
Other comprehensive income (loss)	(430)						(430)
Preferred stock redemptions	(800)	(800)
Preferred stock dividend	(13)					(13)
Common stock purchases	(870)			(77)		(793)
Distributions	(129)							(129)
Contributions	2							2
Other equity transactions	(10)			1		(11)
Balance at Jun. 30, 2022	51,191	850	0	6,298	(744)	42,688	(1,788)	3,887
Balance at Dec. 31, 2022	50,639	850	0	6,298	0	41,833	(2,149)	3,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,308					2,064		244
Other comprehensive income (loss)	304						304
Preferred stock dividend	(17)					(17)
Distributions	(269)							(269)
Contributions	3							3
Other equity transactions	(8)							(8)
Balance at Jun. 30, 2023	52,960	850	0	6,298	0	43,880	(1,845)	3,777
Balance at Mar. 31, 2023	51,651	850	0	6,298	0	42,814	(2,109)	3,798
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,205					1,075		130
Other comprehensive income (loss)	264						264
Preferred stock dividend	(9)					(9)
Distributions	(144)							(144)
Contributions	1							1
Other equity transactions	(8)							(8)
Balance at Jun. 30, 2023	$ 52,960	$ 850	$ 0	$ 6,298	$ 0	$ 43,880	$ (1,845)	$ 3,777