CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Comprehensive income:
Net earnings	$ 1,880	$ 2,607	$ 797
Other comprehensive income (loss):
Foreign currency translation adjustments	(52)	(11)	18
Changes in unamortized actuarial loss, net of tax expense of $95 in 2022, $112 in 2021 and $22 in 2020	284	351	62
Changes in unamortized net prior service credit, net of tax (expense) benefit of $(2) in 2022, $1 in 2021 and $0 in 2020	0	3	2
Total comprehensive income	$ 2,112	$ 2,950	$ 879