Segment Reporting - Revenue from External Customers and Tangible Long-lived Assets by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers	$ 4,817.6	$ 4,825.0	$ 5,007.6	$ 5,160.1	$ 4,942.4	$ 4,891.6	$ 5,580.8	$ 5,733.7	$ 19,810.3	$ 21,148.5	$ 20,467.0
Tangible long-lived assets	3,231.2								3,231.2
Tangible long-lived assets	2,704.2				2,598.1				2,704.2	2,598.1
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									3,658.5	3,717.7	3,955.1
Tangible long-lived assets	549.8								549.8
Tangible long-lived assets					422.9					422.9
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									3,058.6	3,236.9	3,170.9
Tangible long-lived assets	700.1								700.1
Tangible long-lived assets					617.1					617.1
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									2,579.7	2,781.5	2,519.3
Tangible long-lived assets	450.2								450.2
Tangible long-lived assets					344.4					344.4
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									1,698.7	2,187.2	2,139.4
Tangible long-lived assets	204.9								204.9
Tangible long-lived assets					183.3					183.3
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from external customers									8,814.8	9,225.2	$ 8,682.3
Tangible long-lived assets	$ 1,326.2								$ 1,326.2
Tangible long-lived assets					$ 1,030.4					$ 1,030.4