Debt instruments maturity date.

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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

+ Details

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Balance Type:	na
Period Type:	instant

- 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.

+ Details

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Period Type:	duration

- Definition

The amount of cash paid for interest during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 29

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

+ Details

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- Definition

Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5

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 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt maturing in year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 47

-Paragraph 10

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt maturing in year four following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

+ References

+ Details

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- Definition

Amount of long-term debt maturing in year three following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt maturing in year two following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates.

+ References

+ Details

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- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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

+ Details

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Period Type:	instant

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ 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 210.7-03.16)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13, 16

-Article 9

Reference 4: 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

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Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Debt Instrument [Line Items]
Long-term debt	$ 4,603	$ 4,657
Less: Current maturities	279	71
Total, net	4,324	4,586
Long-term debt maturing during year two	560
Long-term debt maturing during year three	265
Long-term debt maturing during year four	500
Long-term debt maturing during year five	250
Interest paid related to short-term borrowings and long-term debt	239	264	230
5.75% Notes Due November 2011 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.75%
Notes maturity date	November 2011
4.625% Notes Due October 2012 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	4.625%
Notes maturity date	October 2012
4.5% Notes Due May 2013 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	4.50%
Notes maturity date	May 2013
5.625% Notes Due November 2013 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.625%
Notes maturity date	November 2013
5.0% Notes Due December 2014 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.00%
Notes maturity date	December 2014
4.125% Notes Due April 2015 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	4.125%
Notes maturity date	April 2015
4.75% Notes Due October 2015 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	4.75%
Notes maturity date	October 2015
5.125% Notes Due December 2016 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.125%
Notes maturity date	December 2016
5.375% Notes Due October 2017 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.375%
Notes maturity date	October 2017
5.25% Notes Due October 2018[Member]
Debt Instrument [Line Items]
Long-term debt	400	400
Notes interest rate, percentage	5.25%
Notes maturity date	October 2018
5.0% Notes Due April 2019 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	5.00%
Notes maturity date	April 2019
4.875% Notes Due October 2019 [Member]
Debt Instrument [Line Items]
Long-term debt	500	500
Notes interest rate, percentage	4.875%
Notes maturity date	October 2019
4.25% Notes Due November 2020 [Member]
Debt Instrument [Line Items]
Long-term debt	300	300
Notes interest rate, percentage	4.25%
Notes maturity date	November 2020
6.0% Notes Due August 2032 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	6.00%
Notes maturity date	August 2032
6.125% Notes Due April 2039 [Member]
Debt Instrument [Line Items]
Long-term debt	250	250
Notes interest rate, percentage	6.125%
Notes maturity date	April 2039
5.25% Notes Due November 2039 [Member]
Debt Instrument [Line Items]
Long-term debt	300	300
Notes interest rate, percentage	5.25%
Notes maturity date	November 2039
Other [Member]
Debt Instrument [Line Items]
Long-term debt	$ 103	$ 157