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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, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers | $ 5,363.8 | $ 4,981.5 | $ 5,123.2 | $ 4,998.5 | $ 4,643.5 | $ 4,526.4 | $ 4,724.8 | $ 4,662.9 | $ 20,467.0 | $ 18,557.6 | $ 18,211.4
Tangible long-lived assets | 2,459.4 |  |  |  | 2,019.3 |  |  |  | 2,459.4 | 2,019.3 |
United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 3,955.1 | 4,186.0 | 4,252.3
Tangible long-lived assets | 385.4 |  |  |  | 361.2 |  |  |  | 385.4 | 361.2 |
Mexico |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 3,170.9 | 2,684.4 | 2,777.3
Tangible long-lived assets | 549.0 |  |  |  | 466.5 |  |  |  | 549.0 | 466.5 |
China |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 2,519.3 | 2,277.6 | 2,141.9
Tangible long-lived assets | 307.3 |  |  |  | 253.5 |  |  |  | 307.3 | 253.5 |
Germany |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 2,139.4 | 2,076.0 | 1,987.3
Tangible long-lived assets | 182.4 |  |  |  | 147.5 |  |  |  | 182.4 | 147.5 |
Other countries |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers |  |  |  |  |  |  |  |  | 8,682.3 | 7,333.6 | $ 7,052.6
Tangible long-lived assets | $ 1,035.3 |  |  |  | $ 790.6 |  |  |  | $ 1,035.3 | $ 790.6 |

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