CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net earnings	$ 173	$ 230	$ 287	$ 381
Other comprehensive income:
Foreign currency translation adjustments	(5)	7	(14)	7
Changes in unamortized actuarial loss, net of tax expense of $2, $2, $6 and $4	7	7	15	14
Changes in unamortized net prior service credit, net of tax benefit of $0, $1, $0 and $1	0	1	0	1
Total other comprehensive income	2	15	1	22
Total comprehensive income	$ 175	$ 245	$ 288	$ 403