Leases - Weighted Average (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Dec. 29, 2019
Leases [Abstract]
Operating lease liabilities arising from obtaining right-of-use assets, including impact of ASC 842 adoption	$ 0.5	$ 41.2
Finance lease liabilities arising from obtaining right-of-use assets, including impact of ASC 842 adoption	$ 0.4	$ 39.6
Weighted-average remaining lease term (in years):
Operating leases	5 years 8 months 26 days		5 years 1 month 6 days
Finance leases	18 years 8 months 1 day		19 years 7 months 6 days
Weighted-average discount rate:
Operating leases	6.50%		6.50%
Finance leases	6.52%		6.53%