Summary of Significant Accounting Policies - Additional information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) Segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 32.8	$ 34.4
Inventory reserves	94.4	93.9
Capitalized pre-production E&D costs	179.3	193.7
Capitalized pre-production tooling costs related to customer-owned tools	96.0	121.0
Cash collected related to E&D and tooling costs	264.6	266.4
Depreciation expense	325.2	295.3	$ 277.2
Capital expenditures recorded in accounts payable	117.8	91.6	86.7
Intangible assets fully amortized	153.6
Restructuring charges	63.6	81.1	107.0
Fixed asset impairment charges	0.7	1.8	2.1
New product development costs	143.7	126.8	102.0
Foreign currency transaction gain (loss)	$ (7.6)	(28.5)	(32.1)
Number of reportable operating segments | Segment	2
Asset impairments
Significant Accounting Policies [Line Items]
Restructuring charges	$ 4.7	$ 3.9	$ 0.5