Shareholders' Equity (Shareholders' Equity, Accumulated Other Comprehensive Loss, Common Stock, and Preferred Stock) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Issued		1,065,000,000	1,066,000,000
Treasury Stock, Shares		176,000,000	164,000,000
Total shares of common stock outstanding		889,000,000	902,000,000
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax	[1]	$ (207,000,000)	$ (101,000,000)
Other		(40,000,000)	(45,000,000)
Accumulated other comprehensive loss		$ (331,000,000)	$ (230,000,000)
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Stock Repurchased During Period, Shares		22,700,000	6,800,000
Stock authorized to repurchase		$ 4,100,000,000
Number of shares of common stock repurchased from inception (in shares)		253,000,000
Approximate value of shares of common stock repurchased from inception		$ 10,100,000,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Number of shares of preferred stock that are authorized for issuance (in shares)		5,000,000
Number of shares preferred stock that are issued at period end (in shares)		0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		$ (84,000,000)	$ (84,000,000)
Stock plans		282,000,000	395,000,000	$ 264,000,000
Retained Earnings
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Stock plans		98,000,000	275,000,000	$ 277,000,000
Foreign Plan [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net actuarial losses		$ 209,000,000	$ 98,000,000

[1] Included net actuarial losses for our international pension plans of $209 million at December 31, 2023 and $98 million at December 31, 2022.