CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Comprehensive income:
Net earnings	$ 839	$ 1,880	$ 2,607
Other comprehensive income (loss):
Foreign currency translation adjustments	7	(52)	(11)
Changes in unamortized actuarial loss, net of tax benefit (expense) of $17 in 2023, $(95) in 2022 and $(112) in 2021	(51)	284	351
Changes in unamortized net prior service credit, net of tax benefit (expense) of $2 in 2023, $(2) in 2022 and $1 in 2021	(2)	0	3
Total comprehensive income	$ 793	$ 2,112	$ 2,950