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Pension Plans - Summary of Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($)
$ in Millions
Jan. 02, 2021
Dec. 28, 2019
Defined Benefit Plan Disclosure [Line Items]    
Pension liabilities $ (127.1) $ (122.1)
Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Other assets 54.2 17.3
Accrued benefits (4.7) (5.3)
Pension liabilities (127.1) (122.1)
Net liability $ (77.6) $ (110.1)