Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Foreign currency translation adjustments, tax (expense) benefit	$ (1.6)	$ (2.2)	$ 5.1
Net gains (losses) on hedging instruments, tax (expense) benefit	1.0	(12.3)	12.9
Net pension and other post-retirement benefits, tax (expense) benefit	$ (81.8)	$ (6.5)	$ 58.0