Debt - Summary of Debt Instruments (Detail) In Millions, unless otherwise specified	Dec. 31, 2013 USD ($)	Dec. 31, 2013 JPY (¥)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Senior Notes due 2014 [Member] USD ($)	Dec. 31, 2012 Senior Notes due 2014 [Member] USD ($)	Dec. 31, 2013 Senior Notes due 2019 [Member] USD ($)	Dec. 31, 2012 Senior Notes due 2019 [Member] USD ($)	Dec. 31, 2013 Senior Notes due 2021 [Member] USD ($)	Dec. 31, 2012 Senior Notes due 2021 [Member] USD ($)	Dec. 31, 2013 Senior Notes due 2039 [Member] USD ($)	Dec. 31, 2012 Senior Notes due 2039 [Member] USD ($)
Short-term debt
Senior Credit Facility			$ 100.0	$ 143.0
Other short-term debt	0.5		0.1
Total short-term debt	0.5		100.1
Long-term debt
Senior Notes due 2014	250.0				250.0	250.0	500.0	500.0	300.0	300.0	500.0	500.0
Term loan	112.4	11,700.0	138.6
Other long-term debt	2.1
Debt discount	(1.5)		(1.7)
Adjustment related to interest rate swaps	9.3		33.9
Total long-term debt	$ 1,672.3		$ 1,720.8