Leases - Supplemental Cash Flow and Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Dec. 29, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows related to operating leases	$ 31.4	$ 26.5
Operating cash flows related to finance leases	0.3	0.3
Financing cash flows related to finance leases	3.8	5.6
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	81.7	1.9
Finance leases	5.2	$ 0.0
Operating Leases
Operating lease right-of-use assets	892.8		$ 811.1
Accumulated amortization	(96.2)		(75.2)
Operating lease right-of-use assets, net	796.6		735.9
Other accrued expenses	73.6		68.6
Operating lease liabilities	766.5		709.5
Total operating lease liabilities	840.1		778.1
Finance Leases
Property and equipment, gross	131.6		127.4
Accumulated depreciation	(94.3)		(90.9)
Property and equipment, net	37.3		36.5
Other accrued expenses	11.6		12.4
Other liabilities	14.0		12.6
Total finance lease liabilities	$ 25.6		$ 25.0
Weighted Average Remaining Lease Term (Years)
Operating leases	11 years 6 months 22 days		11 years 9 months 22 days
Finance leases	2 years 9 months 29 days		1 year 6 months 29 days
Weighted Average Discount Rate
Operating leases	5.60%		5.70%
Finance leases	3.80%		4.60%