Segment Information - Business Segment Information by Geographical Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 2,405.4	$ 2,485.6	$ 2,654.6
Plant, Property & Equipment, Net	464.5	443.5
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	900.3	941.1	927.0
Plant, Property & Equipment, Net	181.6	192.0
Italy
Revenues from External Customers and Long-Lived Assets [Line Items]
Plant, Property & Equipment, Net	81.0	81.6
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	324.4	290.7	303.3
Plant, Property & Equipment, Net	38.5	36.8
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Plant, Property & Equipment, Net	40.2	37.2
South Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Plant, Property & Equipment, Net	28.0	32.6
Other Developed Markets
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	459.6	476.8	588.3
Plant, Property & Equipment, Net	36.0	22.2
Emerging Growth Markets
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	721.1	777.0	$ 836.0
Plant, Property & Equipment, Net	$ 59.2	$ 41.1