Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 83.5
Operating Lease, Liability, Current	19.2
Operating Lease, Liability, Noncurrent	70.2
Operating Lease, Liability	89.4
Operating Lease, Cost	21.3
Short-term Lease, Cost	3.5
Lease, Cost	$ 24.8
Operating Leases, Rent Expense		$ 24.8	$ 30.4
Operating Lease, Weighted Average Remaining Lease Term	6 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.80%
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 22.7
Lessee, Operating Lease, Liability, Payments, Due Year Two	17.9
Lessee, Operating Lease, Liability, Payments, Due Year Three	13.7
Lessee, Operating Lease, Liability, Payments, Due Year Four	12.1
Lessee, Operating Lease, Liability, Payments, Due Year Five	8.9
Lessee, Operating Lease, Liability, Payments, Due after Year Five	28.1
Lessee, Operating Lease, Liability, Payments, Due	103.4
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(14.0)
Operating Lease, Payments	23.2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 7.3