Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Forward-starting interest rate swap adjustment, income taxes	$ 0.6	$ (21.2)	$ (19.2)	$ (6.6)
Unrealized gain on available-for-sale securities, income taxes	0.0	0.0	0.0	0.1
Foreign currency translation adjustment, income taxes	(16.0)	(109.4)	(18.8)	(203.7)
Defined benefit pension and postemployment plans adjustment, income taxes	$ 1.3	$ 1.4	$ 3.9	$ 4.4