Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 35.0	$ 58.6
Operating Lease, Liability, Current	11.1	13.0
Operating Lease, Liability, Noncurrent	20.0	28.0
Operating Lease, Liability, Liability Subject to Compromise	(0.4)	(31.9)
Operating Lease, Liability, Not Subject to Compromise	31.1
Operating Lease, Cost	19.6	21.2	$ 21.3
Short-term Lease, Cost	1.1	1.1	3.5
Variable Lease, Cost	2.4	3.1	0.0
Lease, Cost	$ 23.1	$ 25.4	24.8
Operating Lease, Weighted Average Remaining Lease Term	5 years 8 months 12 days	6 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.40%	3.90%
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 14.7
Lessee, Operating Lease, Liability, Payments, Due Year Two	11.0
Lessee, Operating Lease, Liability, Payments, Due Year Three	7.9
Lessee, Operating Lease, Liability, Payments, Due Year Four	4.5
Lessee, Operating Lease, Liability, Payments, Due Year Five	2.8
Lessee, Operating Lease, Liability, Payments, Due after Year Five	2.9
Lessee, Operating Lease, Liability, Payments, Due	43.8
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(12.3)
Operating Lease, Payments	20.4	$ 23.1	23.2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2.6	6.9	$ 7.3
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	11.1	13.0
Operating Lease, Liability, Noncurrent	20.0	28.0
Operating Lease, Liability, Liability Subject to Compromise	$ 0.4	$ 31.9
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued and other current liabilities	Accrued and other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Liabilities, Total [Member]
Leases [Abstract]
Operating Lease, Liability	$ 31.5	$ 72.9
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 31.5	$ 72.9