Commitments and Contingencies - Schedule of Liabilities for Future Environmental Costs (Detail) $ in Millions	Sep. 27, 2019 USD ($)
Loss Contingencies [Line Items]
2019	$ 1.3
2020	0.7
2021	0.5
2022	0.4
2023	0.7
Thereafter	1.6
Total costs	5.2
Less imputed interest	0.4
Reserve amount	4.8
Recurring Costs
Loss Contingencies [Line Items]
2019	0.4
2020	0.4
2021	0.3
2022	0.3
2023	0.3
Thereafter	0.7
Total costs	2.4
Non-Recurring Costs
Loss Contingencies [Line Items]
2019	0.9
2020	0.3
2021	0.2
2022	0.1
2023	0.4
Thereafter	0.9
Total costs	$ 2.8