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Postretirement Plans - Summary of Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Jan. 01, 2022
Defined Benefit Plan Disclosure [Line Items]    
Retiree health care benefits $ (78.6) $ (104.9)
U.S. Postretirement Health Care Plans    
Defined Benefit Plan Disclosure [Line Items]    
Accrued benefits (2.7) (2.7)
Retiree health care benefits (23.4) (31.1)
Net asset (liability) $ (26.1) $ (33.8)