Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comp Loss	Noncontrolling Interest [Member]	EIDP	EIDP Preferred Stock [Member]	EIDP Common Stock [Member]	EIDP Additional Paid-in Capital [Member]	EIDP Retained Earnings [Member]	EIDP Accumulated Other Comp Loss	EIDP Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2019	$ 24,555	$ 7	$ 27,997	$ (425)	$ (3,270)	$ 246	$ 20,528	$ 239	$ 0	$ 23,958	$ (406)	$ (3,270)	$ 7
Net income (loss)	701			681		20	625				615		10
Net other comprehensive income (loss)	380				380		380					380
Dividends, Common Stock	(388)		(194)	(194)
Dividends, Preferred Stock							(10)			(5)	(5)
Issuance of stock	56		56				56			56
Share-based compensation	59		60				59			60
Retained Earnings, Share-based Compensation				(1)							(1)
Common Stock Repurchase	(275)		(216)	(59)
Acquisition of a noncontrolling interest in consolidated subsidiaries	(52)		(37)			(15)	(52)			(37)			(15)
Stockholders' Equity, Other	27		41	(2)		(12)	15			17			(2)
Ending Balance at Dec. 31, 2020	25,063	7	27,707	0	(2,890)	239	21,601	239	0	24,049	203	(2,890)	0
Net income (loss)	1,769			1,759		10	1,731				1,731
Net other comprehensive income (loss)	(8)				(8)		(8)					(8)
Dividends, Common Stock	(397)		(97)	(300)
Dividends, Preferred Stock							(10)				(10)
Issuance of stock	100		100				100			100
Share-based compensation	56		59				56			59
Retained Earnings, Share-based Compensation				(3)							(3)
Common Stock Repurchase	(950)		(18)	(932)
Stockholders' Equity, Other	(10)					(10)	(11)			(12)	1
Ending Balance at Dec. 31, 2021	25,623	7	27,751	524	(2,898)	239	23,459	239	0	24,196	1,922	(2,898)	0
Net income (loss)	1,158			1,147		11	1,124				1,123		1
Net other comprehensive income (loss)	92				92		92					92
Dividends, Common Stock	(418)			(418)
Dividends, Preferred Stock							(10)				(10)
Issuance of stock	88		88				88			88
Share-based compensation	10		12				10			12
Retained Earnings, Share-based Compensation				(2)							(2)
Common Stock Repurchase	(1,000)			(1,000)
Stockholders' Equity, Other	(12)			(1)		(11)	(14)			(12)	(2)
Ending Balance at Dec. 31, 2022	$ 25,541	$ 7	$ 27,851	$ 250	$ (2,806)	$ 239	$ 24,749	$ 239	$ 0	$ 24,284	$ 3,031	$ (2,806)	$ 1