Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 240.3	$ 369.6
Other comprehensive income, net of tax:
Foreign currency translation adjustments	(128.2)	28.7
Total other comprehensive income, net of tax	(128.2)	28.7
Comprehensive income	$ 112.1	$ 398.3