Stockholders' Equity (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jan. 30, 2024	Dec. 31, 2023	Dec. 31, 2022	Nov. 05, 2019
Stockholders' Equity [Line Items]
Amount authorized for stock repurchase program			$ 3,800			$ 3,200
Repurchased shares of treasury stock	223,329	39,325
Treasury stock activity	$ 63	$ 9
Dividends paid	51	49
Accumulated other comprehensive income (loss)	(419)	(596)		$ (422)	$ (599)
Benefit Plans
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	(419)	(596)		$ (422)	$ (599)
Treasury Stock, Common
Stockholders' Equity [Line Items]
Treasury stock activity	63	$ 9
Excise tax on share repurchases	$ 1