Goodwill and Other Intangible Assets - Changes in Goodwill and Other Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Goodwill and Other Intangible Assets [Roll Forward]
Amortizing Intangible Assets, Beginning Balance		$ 730.0
Amortizing Intangible Assets, Additions		49.9
Amortizing Intangible Assets, Impairments		(1.9)
Amortizing Intangible Assets, Amortization expense		(67.2)
Amortizing Intangible Assets, Other		(7.8)
Amortizing Intangible Assets, Ending Balance	703.0	703.0
Goodwill		3,063.3
Goodwill, Acquired During Period		14.1
Goodwill, Impairment Loss	(15.3)	(15.3)
Goodwill, Other		0
Goodwill	3,062.1	3,062.1
Other Non-Amortizing Intangible Assets, Beginning Balance		2,757.7
Other Non-Amortizing Intangible Assets, Impairments		(42.7)
Other Non-Amortizing Intangible Assets, Other		(3.5)
Other Non-Amortizing Intangible Assets, Ending Balance	$ 2,711.5	$ 2,711.5