Accounting Policies - Merchandise Inventories (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 28, 2022	Aug. 29, 2021
Schedule of Inventory [Line Items]
Merchandise inventories	$ 17,907	$ 14,215
Inventory, LIFO Reserve, Period Charge	(438)
UNITED STATES
Schedule of Inventory [Line Items]
LIFO Inventory Amount	13,160	10,248
CANADA
Schedule of Inventory [Line Items]
FIFO Inventory Amount	1,966	1,456
Other International Operations
Schedule of Inventory [Line Items]
FIFO Inventory Amount	$ 2,781	$ 2,511