Restructuring - Summary of Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 04, 2020	Mar. 30, 2019
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	$ 157.7
2020 charges	32.6
Utilization cash	(46.7)
Utilization, non-cash	(10.4)
Accrual as of end of period	133.2
Employee termination benefits
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	152.8
2020 charges	20.0
Utilization cash	(44.5)
Utilization, non-cash	0.0
Accrual as of end of period	128.3
Asset impairment charges
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2020 charges	10.4	$ 2.1
Utilization cash	0.0
Utilization, non-cash	(10.4)
Accrual as of end of period	0.0
Contract termination costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	4.9
2020 charges	0.2
Utilization cash	(0.2)
Utilization, non-cash	0.0
Accrual as of end of period	4.9
Other related costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2020 charges	2.0
Utilization cash	(2.0)
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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