Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,155.0	$ 1,086.9	$ 925.0
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments (net of tax of $0.0 in 2023, 2022, and 2021)	10.0	(34.1)	(9.5)
Comprehensive income	$ 1,165.0	$ 1,052.8	$ 915.5