Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 286.3	$ 219.2	$ 575.3	$ 459.5
Other comprehensive income, net of tax:
Foreign currency translation adjustments	17.3	56.2	31.9	(72.0)
Total other comprehensive income (loss), net of tax	17.3	56.2	31.9	(72.0)
Comprehensive income	$ 303.6	$ 275.4	$ 607.2	$ 387.5