Net Sales by Geographic Region (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated net sales	$ 6,939.6	$ 6,833.0	$ 6,880.7
U.S.
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated net sales	5,233.0	5,250.3	5,182.3
Asia
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated net sales	857.3	703.5	731.1
Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated net sales	455.0	482.8	559.9
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Consolidated net sales	$ 394.3	$ 396.4	$ 407.4