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Disclosure of the number of years after issuance that the notes are puttable by the issuer.

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion, that may be put at the option of the holder at a later date.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Face (par) amount of debt instrument at time of issuance.

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

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Date the debt instrument was issued, in CCYY-MM-DD format.

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

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position.

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Long-Term Debt (Details Textual) - USD ($)				12 Months Ended
Long-Term Debt (Details Textual) - USD ($)	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Jan. 29, 2016
Additional Long-Term Debt (Textuals)
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, 2016				$ 1,000,000,000
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, 2017				751,000,000
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, 2018				251,000,000
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, 2019				450,000,000
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, 2020				501,000,000
Debt maturities, exclusive of unamortized discounts and capitalized lease obligations, after five years				9,200,000,000
Mortgage notes due through fiscal 2027
Additional Long-Term Debt (Textuals)
Real properties pledged as collateral				33,000,000
Notes due in fiscal 2036 - 2040
Additional Long-Term Debt (Textuals)
Puttable Notes Issued in 1997				$ 100,000,000
Issue date				Dec. 31, 1997
Number of years after issuance that notes are puttable				20 years
2013, 2014 and 2015 Combined Notes [Member]
Long-Term Debt
Debt instrument, redemption price under change of control provisions, percentage				101.00%
2023 and 2043 Combined Notes [Member]
Long-Term Debt
Unsecured notes, issued			$ 1,000,000,000.0
2023 Notes [Member]
Long-Term Debt
Unsecured notes, issued			$ 500,000,000
Unsecured notes, maturity date			Sep. 30, 2023
Unsecured notes, interest rate			3.875%
Unamortized discount			$ 5,000,000
2043 Notes [Member]
Long-Term Debt
Unsecured notes, issued			$ 500,000,000
Unsecured notes, maturity date			Sep. 30, 2043
Unsecured notes, interest rate			5.00%
Unamortized discount			$ 9,000,000
2019, 2024 and 2044 Combined Notes [Member]
Long-Term Debt
Unsecured notes, issued		$ 1,250,000,000.00
2019 Notes [Member]
Long-Term Debt
Unsecured notes, issued		$ 450,000,000
Unsecured notes, maturity date		Sep. 30, 2019
Unsecured notes, interest rate				0.907%
Unamortized discount		$ 2,000,000
Unsecured notes, description of variable rate basis				three-month LIBOR
Unsecured notes, basis spread on variable rate		0.42%
2024 Notes [Member]
Long-Term Debt
Unsecured notes, issued		$ 450,000,000
Unsecured notes, maturity date		Sep. 30, 2024
Unsecured notes, interest rate		3.125%
Unamortized discount		$ 6,000,000
2044 Notes [Member]
Long-Term Debt
Unsecured notes, issued		$ 350,000,000
Unsecured notes, maturity date		Sep. 30, 2044
Unsecured notes, interest rate		4.25%
Unamortized discount		$ 4,000,000
2018, 2025 and 2045 Combined Notes [Member]
Long-Term Debt
Unsecured notes, issued	$ 1,750,000,000.00
2018 Notes [Member]
Long-Term Debt
Unsecured notes, issued	$ 250,000,000
Unsecured notes, maturity date	Sep. 30, 2018
Unsecured notes, interest rate				1.102%
Unamortized discount	$ 1,000,000
Unsecured notes, description of variable rate basis				three-month LIBOR
Unsecured notes, basis spread on variable rate	0.60%
2025 Notes [Member]
Long-Term Debt
Unsecured notes, issued	$ 750,000,000
Unsecured notes, maturity date	Sep. 30, 2025
Unsecured notes, interest rate	3.375%
Unamortized discount	$ 8,000,000
2045 Notes [Member]
Long-Term Debt
Unsecured notes, issued	$ 750,000,000
Unsecured notes, maturity date	Sep. 30, 2045
Unsecured notes, interest rate	4.375%
Unamortized discount	$ 24,000,000