Goodwill and Other Identifiable Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	$ 1,621.1	$ 1,628.8
Accumulated amortization	(448.4)	(357.9)
Finite-life intangibles, net	1,172.7	1,270.9
Indefinite-life intangibles	459.1	476.5
Total intangibles, cost	2,080.2	2,105.3
Total intangibles, net	1,631.8	1,747.4
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	1,478.0	1,482.9
Accumulated amortization	(346.7)	(266.9)
Finite-life intangibles, net	1,131.3	1,216.0
Trade names
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	1.8	1.8
Accumulated amortization	(1.4)	(1.2)
Finite-life intangibles, net	0.4	0.6
Patented Technology [Member]
Acquired Intangible Assets by Major Class [Line Items]
Finite-life intangibles, cost	141.3	144.1
Accumulated amortization	(100.3)	(89.8)
Finite-life intangibles, net	$ 41.0	$ 54.3