Income Taxes - Income (Loss) Before Income Taxes and Noncontrolling Interest (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Taxes [Line Items]
Federal	$ 328.7	[1]	$ 39.2	[1]	$ (31.5)	[1]
International	397.7		(223.2)		74.7
Income (loss) before income taxes and noncontrolling interest	$ 726.4		$ (184.0)		$ 43.2

[1] As a result of the Merger, “Federal” reflects income (loss) before income taxes and noncontrolling interest for Switzerland in 2013 and 2012 and for the U.S. in 2011.