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	$ 49,677		$ 14	$ 26,542	$ 31,962	$ (13,488)	$ 4,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	9,945				10,019		(74)
Other comprehensive (loss) income	4,206					4,219	(13)
Issuance (redemption) of subsidiary stock (Note 20)		$ 1,736						$ 1,736
Stock based compensation	523			526	(3)
Dividends to noncontrolling interests	(186)						(186)
Other	(86)		1	(7)	(41)		(39)
Balance at end of period at Dec. 31, 2021	65,815		15	27,061	41,937	(9,269)	6,071
Balance at beginning of period at Dec. 31, 2020	0
Balance at end of period at Dec. 31, 2021	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	9,708				9,934		(226)
Other comprehensive (loss) income	1,337					1,368	(31)
Issuance (redemption) of subsidiary stock (Note 20)		$ (2,121)			(909)			$ (1,212)
Purchase of common stock	(2,500)		(1)	(1,153)	(1,347)
Stock based compensation	294			299	(5)
Cash dividends paid on common stock	(257)				(257)
Dividends to noncontrolling interests	(140)				(12)		(127)
Other	(208)			221	(90)		(340)
Balance at end of period at Dec. 31, 2022	71,927		14	26,428	49,251	(7,901)	4,135
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock based compensation	299
Other	59
Balance at end of period at Dec. 31, 2022	357
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	9,840				10,127		(287)
Other comprehensive (loss) income	(2,355)					(2,346)	(9)
Purchase of common stock	(11,115)		(2)	(7,686)	(3,426)
Stock based compensation	253			259	(6)
Cash dividends paid on common stock	(477)				(477)
Dividends to noncontrolling interests	(120)						(120)
Other	237			129	(77)		185
Balance at end of period at Dec. 31, 2023	68,189		$ 12	$ 19,130	$ 55,391	$ (10,247)	$ 3,903
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock based compensation	24
Other	(263)
Balance at end of period at Dec. 31, 2023	$ 118