Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 74.4	$ 71.7
Other comprehensive income:
Foreign currency translation adjustments	40.3	62.1
Translation adjustments on net investment hedge, net of income taxes of $(3.3) and $(12.0), respectively	(5.7)	(21.4)
Translation adjustments of long-term intercompany loans	3.5	(19.6)
Unrealized gain (loss) on investments, net of income taxes of $0.5 and $(0.1), respectively	2.4	(0.3)
Defined benefit pension plans and retiree health care plan, net of income taxes of $0.0 and $(0.3), respectively	0.2	(0.5)
Total other comprehensive income	40.7	20.3
Comprehensive income	$ 115.1	$ 92.0