Consolidated and Combined Statements of Comprehensive Income Statement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statements of Comprehensive Income [Abstract]
Net earnings	$ 1,044.5	$ 872.3	$ 863.8
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	136.6	(123.8)	(131.7)
Pension adjustments	1.6	(7.6)	17.8
Total other comprehensive income (loss), net of income taxes	138.2	(131.4)	(113.9)
Comprehensive income	$ 1,182.7	$ 740.9	$ 749.9