Equity (Common Stock - Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Cost of shares issued	$ 105	$ 193	$ 160
Repurchase Shares	49,732,851	72,296,518	26,361,487
Treasury Stock, Value, Acquired, Cost Method	$ 3,301	$ 4,328	$ 1,151
Stock Repurchase Program, Remaining Authorized Repurchase Amount	1,200
Dividends, Common Stock, Cash	(1,598)	(1,647)	(1,657)
Retained Earnings
Class of Stock [Line Items]
Dividends, Common Stock, Cash	(1,598)	$ (1,647)	$ (1,657)
August2021Authorization
Class of Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method	25
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 0
Common Shares Issued For Stock Options [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	3,290,998	4,926,185	3,933,989
Cost of shares issued	$ 156	$ 195	$ 153
Treasury Shares Issued For Stock Options [Member]
Class of Stock [Line Items]
Issued Treasury Stock	0	0	0
Common Stock [Member]
Class of Stock [Line Items]
Dividends, Common Stock, Cash	$ (1,600)	$ (1,600)	$ (1,700)