Summary Of Significant Accounting Policies (Receivables, Net) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 01, 2013	Sep. 02, 2012
Summary Of Significant Accounting Policies
Vendor receivables	$ 581	$ 545
Reinsurance receivables	238	226
Third-party pharmacy receivables	102	104
Receivables from governmental entities	228	87
Other receivables	52	64
Receivables, Net	$ 1,201	$ 1,026

Current portion of receivables From governmental entities consisting of various tax related items.

No definition available.

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- Definition

Receivables due from member's insurance companies for the amount above their co-pay, which is collected at the point-of-sale.

+ References

No definition available.

+ Details

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- Definition

Receivables due from vendors that may be used to settle related payables due to vendors.

+ References

No definition available.

+ Details

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- Details

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- Definition

Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

+ Details

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- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details

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- Definition

Amount after valuation allowance currently billed or billable under reinsurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 45

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-SubTopic 605

-Section 50

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-Subparagraph (a)(2)

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