CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 239	$ 310	$ 620	$ 1,869
Other comprehensive income (loss):
Foreign currency translation adjustments	(7)	(53)	0	(62)
Changes in unamortized actuarial loss, net of tax expense of $3, $11, $7 and $40	9	32	23	122
Changes in unamortized net prior service credit, net of tax benefit (expense) of $0, $0, $1 and ($1)	0	1	1	1
Total other comprehensive income (loss)	2	(20)	24	61
Total comprehensive income	$ 241	$ 290	$ 644	$ 1,930