Restructuring - Summary of Restructuring Activities (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	$ 108.7
2019 charges	91.0
Utilization cash	(47.9)
Utilization, non-cash	(3.6)
Accrual as of end of period	148.2
Employee termination benefits
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	103.3
2019 charges	81.4
Utilization cash	(41.3)
Utilization, non-cash	0.0
Accrual as of end of period	143.4
Asset impairment charges
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2019 charges	3.6	$ 1.6
Utilization cash	0.0
Utilization, non-cash	(3.6)
Accrual as of end of period	0.0
Contract termination costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	5.4
2019 charges	2.0
Utilization cash	(2.6)
Utilization, non-cash	0.0
Accrual as of end of period	4.8
Other related costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2019 charges	4.0
Utilization cash	(4.0)
Utilization, non-cash	0.0
Accrual as of end of period	$ 0.0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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