Leases and Other Commitments Net Rent Expense Prior to Adoption of ASU 2016-02 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Net Rent Expense Prior to Adoption of ASU 2016-02 [Line Items]
operating leases, rent expense gross	$ 560,941	$ 540,634
Less: Sub-lease income	(7,141)	(7,144)
Operating Leases, Rent Expense, Net	553,800	533,490
Minimum facility rentals [Member]
Net Rent Expense Prior to Adoption of ASU 2016-02 [Line Items]
Minimum facility rentals	484,291	483,178
Equipment rentals [Member]
Net Rent Expense Prior to Adoption of ASU 2016-02 [Line Items]
Minimum facility rentals	23,635	24,786
Vehicles rentals [Member]
Net Rent Expense Prior to Adoption of ASU 2016-02 [Line Items]
Minimum facility rentals	$ 53,015	$ 32,670