Pension Plans - Summary of Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 29, 2018	Dec. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Pension liabilities	$ (171.3)	$ (158.9)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other assets	4.3	1.5
Accrued benefits	(4.3)	(5.2)
Pension liabilities	(171.3)	(158.9)
Net liability	$ (171.3)	$ (162.6)

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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