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Equity and Comprehensive Income - Additional Information - Dividends (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Feb. 12, 2017	Feb. 14, 2016	Feb. 12, 2017	Feb. 14, 2016
Dividends Payable [Line Items]
Dividends declared	$ 0.45	$ 0.40	$ 0.90	$ 0.80
Dividend Rate
Dividends Payable [Line Items]
Dividends declared	$ 0.45	$ 0.40

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Details

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