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Accumulated Other Comprehensive Income or Loss - Schedule Of Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($)
$ in Millions
12 Months Ended
Jan. 02, 2021
Dec. 28, 2019
Dec. 29, 2018
Statement Of Income And Comprehensive Income [Abstract]      
Amortization of net actuarial loss, prior service cost and settlement expense $ 0.1 $ 18.4 $ 0.9