Leases (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 30, 2019	Dec. 29, 2018
Lease Expense Disclosure [Abstract]
Operating Lease, Expense	$ 13.0
Finance Lease, Right-of-Use Asset, Amortization	0.2
Finance Lease, Interest Expense	0.1
Leases Supplemental Cash Flow Disclosure [Abstract]
Operating Lease, Payments	(12.6)
Finance Lease, Interest Payment on Liability	(0.1)
Finance Lease, Principal Payments	(0.3)
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	7.7
Lease Balance Sheet Disclosure [Abstract]
Operating Lease, Right-of-Use Asset	82.0	$ 0.0
Operating Lease, Liability, Current	30.6
Operating Lease, Liability, Noncurrent	52.7	0.0
Operating Lease, Liability	83.3
Property, Plant and Equipment, Net	277.9	276.0
Finance Lease, Liability, Current	1.6
Finance Lease, Liability, Noncurrent	3.4
Finance Lease, Liability	$ 5.0
Operating Lease, Weighted Average Remaining Lease Term	4 years 7 months 6 days
Finance Lease, Weighted Average Remaining Lease Term	3 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.40%
Finance Lease, Weighted Average Discount Rate, Percent	4.80%
Lease Liability Maturity Schedule
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 27.1
Lessee, Operating Lease, Liability, Payments, Due Year Three	14.5
Lessee, Operating Lease, Liability, Payments, Due Year Four	7.8
Lessee, Operating Lease, Liability, Payments, Due Year Five	5.0
Lessee, Operating Lease, Liability, Payments, Due after Year Five	15.9
Lessee, Operating Lease, Liability, Payments, Due	92.9
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	9.6
Finance Lease, Liability, Payments, Due Next Twelve Months	1.5
Lessee, Operating Lease, Liability, Payments, Due Year Two	22.6
Finance Lease, Liability, Payments, Due Year Two	1.4
Finance Lease, Liability, Payments, Due Year Three	1.4
Finance Lease, Liability, Payments, Due Year Four	1.1
Finance Lease, Liability, Payments, Due Year Five	0.0
Finance Lease, Liability, Payments, Due after Year Five	0.0
Finance Lease, Liability, Payments, Due	5.4
Finance Lease, Liability, Undiscounted Excess Amount	0.4
Operating Leases, Future Minimum Payments Due, Next Twelve Months		28.3
Operating Leases, Future Minimum Payments, Due in Two Years		19.2
Operating Leases, Future Minimum Payments, Due in Three Years		15.8
Operating Leases, Future Minimum Payments, Due in Four Years		8.3
Operating Leases, Future Minimum Payments, Due in Five Years		6.3
Operating Leases, Future Minimum Payments, Due Thereafter		25.3
Operating Leases, Future Minimum Payments Due		103.2
Capital Leases, Future Minimum Payments Due, Next Twelve Months		1.6
Capital Leases, Future Minimum Payments Due in Two Years		1.3
Capital Leases, Future Minimum Payments Due in Three Years		1.4
Capital Leases, Future Minimum Payments Due in Four Years		1.0
Capital Leases, Future Minimum Payments Due in Five Years		0.0
Capital Leases, Future Minimum Payments Due Thereafter		0.0
Capital Leases, Future Minimum Payments Due		5.3
Operating Leases, Rent Expense		32.2
Capital Lease Payments, Gross		$ 2.5
Finance Lease [Member]
Lease Expense Disclosure [Abstract]
Lease, Cost	0.3
Lease Balance Sheet Disclosure [Abstract]
Property, Plant and Equipment, Gross	18.2
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	9.8
Property, Plant and Equipment, Net	$ 8.4
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	1 year
Lessee, Finance Lease, Renewal Term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	5 years
Lessee, Finance Lease, Renewal Term	5 years