Summary of Significant Accounting Policies (Recently Issued Financial Accounting Standards) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 1,266,548	$ 0
Operating lease liabilities	1,450,917
Sale-leaseback financing obligations	0	19,562
Property, fixtures and equipment, net	1,036,077	1,115,929
Recognition of deferred gain on sale-leaseback transactions	$ 0	$ 12,336	$ 11,872
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets				$ 1,300,000
Operating lease liabilities				1,500,000
Deferred gain on sale-leaseback transactions, net				190,400
Deferred tax assets, net of valuation allowance, noncurrent				49,200
Sale-leaseback financing obligations				19,600
Property, fixtures and equipment, net				$ 16,100