Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 117.0	$ 115.4	$ 191.4	$ 187.1
Other comprehensive income (loss):
Foreign currency translation adjustments	93.8	(40.2)	134.1	21.9
Translation adjustments on net investment hedge, net of income taxes of $(18.4), $6.4, $(21.7) and $(5.6), respectively	(33.0)	11.2	(38.7)	(10.2)
Translation adjustments of long-term intercompany loans	(1.2)	(23.5)	2.3	(43.1)
Unrealized gain on investments, net of income taxes of $0.1, $0.2, $0.6 and $0.1, respectively	0.6	0.8	3.0	0.5
Defined benefit pension plans and retiree health care plan, net of income taxes of $0.2, $0.0, $0.2 and $(0.3), respectively	0.5	0.1	0.7	(0.4)
Total other comprehensive income (loss)	60.7	(51.6)	101.4	(31.3)
Comprehensive income	$ 177.7	$ 63.8	$ 292.8	$ 155.8