Equity and Accumulated Other Comprehensive Earnings (Loss) - Equity Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	$ 3,527	$ 3,685
Balance at beginning of period (in shares)	368,036,369
Net earnings	$ 180	447
Other comprehensive earnings (loss), net of tax	42	(29)
Common dividends, net of tax benefits	(63)	(65)
Treasury stock purchases	(3)	(102)
Treasury shares re-issued	8	9
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged	8	6
Other activity	9	6
Balance at end of the period	$ 3,708	3,957
Balance at end of period (in shares)	367,929,021
Common Stock
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	$ 1,260	$ 1,220
Balance at beginning of period (in shares)	682,144,000	680,945,000
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged	$ 8	$ 6
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged (in shares)	272,000	791,000
Balance at end of the period	$ 1,268	$ 1,226
Balance at end of the period (in shares)	682,416,000	681,736,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	$ (4,429)	$ (3,854)
Balance at beginning of period (in shares)	(368,036,000)	(360,101,000)
Treasury stock purchases	$ (3)	$ (102)
Treasury stock purchases (in shares)	(39,000)	(1,147,000)
Treasury shares re-issued	$ 8	$ 9
Treasury shares re-issued (in shares)	146,000	151,000
Other activity	$ 10	$ 6
Balance at end of the period	$ (4,414)	$ (3,941)
Balance at end of period (in shares)	(367,929,000)	(361,097,000)
Retained Earnings
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	$ 7,309	$ 6,843
Net earnings	177	446
Common dividends, net of tax benefits	(63)	(65)
Other activity	(1)
Balance at end of the period	7,422	7,224
Accumulated Other Comprehensive Earnings (Loss).
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	(679)	(582)
Other comprehensive earnings (loss), net of tax	42	(29)
Balance at end of the period	(637)	(611)
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity
Balance at beginning of the period	66	58
Net earnings	3	1
Balance at end of the period	$ 69	$ 59