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Retirement Plans - Schedule of Estimated Future Benefit Payments (Detail) - Defined Benefit Plans
$ in Millions
Oct. 02, 2020
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2020 $ 10.2
2021 10.5
2022 10.1
2023 11.8
2024 11.5
Thereafter 62.2
Total $ 116.3