Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrealized gain on available-for-sale securities, income taxes	$ 0.2	$ 0.2	$ (0.4)
Foreign currency translation adjustment, income taxes	(62.3)	41.3	(41.2)
Defined benefit pension and postemployment plans adjustment, income taxes	$ 14.1	$ (14.5)	$ (9.1)