Postretirement Plans - Summary of Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 28, 2019	Dec. 29, 2018
Defined Benefit Plan Disclosure [Line Items]
Retiree health care benefits	$ (122.1)	$ (171.3)
U.S. Postretirement Health Care Plans
Defined Benefit Plan Disclosure [Line Items]
Accrued benefits	(2.8)	(2.9)
Retiree health care benefits	(33.6)	(31.8)
Net liability	$ (36.4)	$ (34.7)

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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

+ References

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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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