Revenue Recognition - Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,063,452	$ 1,002,387	$ 3,117,141	$ 3,086,910
Grocery [Member]
Disaggregation of Revenue [Line Items]
Total net sales	912,984	878,378	2,687,066	2,729,626
Pharmacy [Member]
Disaggregation of Revenue [Line Items]
Total net sales	99,210	89,306	296,278	264,448
Fuel [Member]
Disaggregation of Revenue [Line Items]
Total net sales	49,262	32,275	127,460	85,370
Manufacturing [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,996	$ 2,428	$ 6,337	$ 7,466