Debt (Carrying Value and Estimated Fair Value of Company's Long-term Debt) (Details) - USD ($) $ in Millions	8 Months Ended
May 13, 2018	Sep. 03, 2017
Debt Instrument [Line Items]
Total long-term debt, carrying value	$ 6,611	$ 6,659
Less current portion, carrying value	119	86
Long-term debt, excluding current portion	6,492	6,573
Total long-term debt, fair value	$ 6,493	6,753
1.7% Senior Notes Due December 2019
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.70%
Debt instrument, maturity date	Dec. 15, 2019
Total long-term debt, carrying value	$ 1,198	1,198
1.75% Senior Notes Due February 2020
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.75%
Debt instrument, maturity date	Feb. 15, 2020
Total long-term debt, carrying value	$ 499	498
2.15% Senior Notes Due May 2021
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.15%
Debt instrument, maturity date	May 18, 2021
Total long-term debt, carrying value	$ 995	994
2.25% Senior Notes Due February 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.25%
Debt instrument, maturity date	Feb. 15, 2022
Total long-term debt, carrying value	$ 498	497
2.30% Senior Notes Due May 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.30%
Debt instrument, maturity date	May 18, 2022
Total long-term debt, carrying value	$ 794	793
2.75% Senior Notes Due May 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	2.75%
Debt instrument, maturity date	May 18, 2024
Total long-term debt, carrying value	$ 992	991
3.00% Senior Notes Due May 2027
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.00%
Debt instrument, maturity date	May 18, 2027
Total long-term debt, carrying value	$ 986	986
Other Long-term Debt
Debt Instrument [Line Items]
Total long-term debt, carrying value	$ 649	$ 702

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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