Income Taxes - Income Tax Data from Continuing Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income (loss) components:
United States	$ 28.5	$ 33.0	$ (464.4)
International	152.0	116.1	148.5
Income (loss) from continuing operations before income tax	180.5	149.1	(315.9)
Current income tax expense (benefit):
United States - federal	10.6	(32.6)	(78.9)
United States - state and local	4.2	(8.7)	(12.1)
International	39.6	46.8	49.2
Total current income tax expense (benefit)	54.4	5.5	(41.8)
Deferred income tax expense (benefit) components:
United States - federal	(331.2)	40.1	318.2
United States - state and local	(36.7)	9.9	(14.6)
International	3.9	(15.9)	(1.2)
Total deferred income tax expense (benefit)	(364.0)	34.1	302.4
Income tax expense (benefit)	$ (309.6)	$ 39.6	$ 260.6
Effective income tax rate	(171.50%)	26.60%	(82.50%)