Summary Of Significant Accounting Policies (Merchandise Inventories (Details) - USD ($) $ in Millions	Sep. 02, 2018	Sep. 03, 2017
Schedule of Inventory [Line Items]
Merchandise inventories	$ 11,040	$ 9,834
UNITED STATES
Schedule of Inventory [Line Items]
LIFO Inventory	8,081	7,091
CANADA
Schedule of Inventory [Line Items]
FIFO Inventory Amount	1,189	1,040
Other International Operations
Schedule of Inventory [Line Items]
FIFO Inventory Amount	$ 1,770	$ 1,703

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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