Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges			$ 18.0
Impairment of intangible assets	$ 2.3		2.3
Additions to other intangible assets			106.5
Amortization expense for other intangible assets	20.4	$ 19.9	58.6	$ 58.7
International
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges	18.0		$ 18.0
Impairment of intangible assets	$ 2.3