Stock-Based Compensation Plans - Additional Information (Detail) $ in Millions	6 Months Ended
Feb. 18, 2018 USD ($) shares
Seventh Restated 2002 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares authorized	23,500,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares authorized	13,429,000
Number of shares available to be granted as RSUs	8,187,000
Time-based RSUs awards outstanding	7,393,000
Performance-based RSUs awards outstanding	127,000
Outstanding performance-based RSUs awards granted, subject to achievement of performance targets	205,000
Unrecognized compensation cost \| $	$ 914
Weighted-average recognition period	1 year 8 months 12 days

Number of performance-based compensation awards outstanding at the end of the period.

No definition available.

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- Definition

Number of performance-based compensation awards granted to executive officers upon achievement of the specified performance targets as approved by the Company's Board of Directors.

+ References

No definition available.

+ Details

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- Definition

The number of time-based compensation restricted stock units outstanding at the end of the period.

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No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- 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.

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No definition available.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

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No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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