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Leases - Supplemental Balance Sheet (Details) - USD ($)
$ in Millions
Jun. 27, 2021
Dec. 27, 2020
Operating Leases:    
Operating lease right-of-use assets $ 40.1 $ 42.9
Current portion of operating lease liabilities 9.3 8.9
Operating lease liabilities, net of current portion 35.3 38.6
Finance leases:    
Property, plant and equipment, net 33.0 36.5
Other current liabilities 0.9 0.9
Other long-term liabilities $ 38.3 $ 38.8
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Property, plant and equipment, net Property, plant and equipment, net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Other current liabilities Other current liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other long-term liabilities Other long-term liabilities