Basis of Presentation and Summary of Significant Accounting Policies - Sales Revenue by Similar Products (Details) - USD ($) $ in Millions	4 Months Ended
	Jun. 16, 2018	Jun. 17, 2017
Concentration Risk [Line Items]
Net sales and other revenue	$ 18,653.4	$ 18,460.0
Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 18,653.4	$ 18,460.0
Percentage of total net sales and other revenue	100.00%	100.00%
Non-perishables | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 8,063.3	$ 8,193.3
Percentage of total net sales and other revenue	43.20%	44.40%
Perishables | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 7,727.1	$ 7,563.6
Percentage of total net sales and other revenue	41.40%	41.00%
Pharmacy | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,527.2	$ 1,534.4
Percentage of total net sales and other revenue	8.20%	8.30%
Fuel | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 1,098.1	$ 944.0
Percentage of total net sales and other revenue	5.90%	5.10%
Other | Sales Revenue, Product Line | Product Concentration Risk
Concentration Risk [Line Items]
Net sales and other revenue	$ 237.7	$ 224.7
Percentage of total net sales and other revenue	1.30%	1.20%