Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Restructuring Reserve [Roll Forward]
Beginning balance	$ 12.7	$ 39.7	$ 21.4	$ 19.7
Additional charges	18.0	3.8	23.2	54.7
Payments	(1.7)	(17.8)	(15.4)	(47.6)
Non-cash adjustments	0.0	0.4	(0.2)	(0.7)
Ending balance	$ 29.0	$ 26.1	29.0	26.1
CHCI
Restructuring Reserve [Roll Forward]
Additional charges			$ 18.0	13.2
CHCA
Restructuring Reserve [Roll Forward]
Additional charges				$ 27.2

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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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

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