Short-Term Borrowings and Long-Term Debt, Long-Term Debt (Details) $ in Millions		9 Months Ended
		May 31, 2016 USD ($) $ / € $ / £	Aug. 31, 2015 USD ($) $ / € $ / £
Long-Term Debt [Abstract]
Other	[1],[2]	$ 43	$ 44
Total long term debt	[1]	13,151	13,315
Unsecured Pound Sterling Variable Rate Term Loan Due 2019 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1],[3]	$ 2,121	2,229
Maturity year	[1],[3]	2019
1.750% Unsecured Notes Due 2017 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 747	746
Interest rate	[1]	1.75%
Maturity year	[1]	2017
5.250% Unsecured Notes Due 2019 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1],[4]	$ 252	250
Interest rate	[1],[4]	5.25%
Maturity year	[1],[4]	2019
2.700% Unsecured Notes Due 2019 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 1,244	1,243
Interest rate	[1]	2.70%
Maturity year	[1]	2019
2.875% Unsecured Pound Sterling Notes Due 2020 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1],[3]	$ 582	$ 612
Interest rate	[1],[3]	2.875%
Maturity year	[1],[3]	2020
Spot rate | $ / £		1.46	1.54
3.300% Unsecured Notes Due 2021 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 1,242	$ 1,241
Interest rate	[1]	3.30%
Maturity year	[1]	2021
3.100% Unsecured Notes Due 2022 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 1,193	1,193
Interest rate	[1]	3.10%
Maturity year	[1]	2022
3.800% Unsecured Notes Due 2024 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 1,986	1,985
Interest rate	[1]	3.80%
Maturity year	[1]	2024
3.600% Unsecured Pound Sterling Notes Due 2025 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1],[3]	$ 437	$ 459
Interest rate	[1],[3]	3.60%
Maturity year	[1],[3]	2025
Spot rate | $ / £		1.46	1.54
2.125% Unsecured Euro Notes Due 2026 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1],[5]	$ 832	$ 836
Interest rate	[1],[5]	2.125%
Maturity year	[1],[5]	2026
Spot rate | $ / €		1.12	1.12
4.500% Unsecured Notes Due 2034 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 494	$ 494
Interest rate	[1]	4.50%
Maturity year	[1]	2034
4.400% Unsecured Notes Due 2042 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 492	492
Interest rate	[1]	4.40%
Maturity year	[1]	2042
4.800% Unsecured Notes Due 2044 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 1,486	$ 1,491
Interest rate	[1]	4.80%
Maturity year	[1]	2044
Unsecured Debt [Member] | 1.750% Unsecured Notes Due 2017 [Member]
Long-Term Debt [Abstract]
Interest rate		1.75%
Unsecured Debt [Member] | 3.300% Unsecured Notes Due 2021 [Member]
Long-Term Debt [Abstract]
Interest rate		3.30%
Unsecured Debt [Member] | 3.100% Unsecured Notes Due 2022 [Member]
Long-Term Debt [Abstract]
Interest rate		3.10%
Unsecured Debt [Member] | 3.800% Unsecured Notes Due 2024 [Member]
Long-Term Debt [Abstract]
Interest rate		3.80%
Unsecured Debt [Member] | 4.500% Unsecured Notes Due 2034 [Member]
Long-Term Debt [Abstract]
Interest rate		4.50%
Unsecured Debt [Member] | 4.400% Unsecured Notes Due 2042 [Member]
Long-Term Debt [Abstract]
Interest rate		4.40%
Unsecured Debt [Member] | 4.800% Unsecured Notes Due 2044 [Member]
Long-Term Debt [Abstract]
Interest rate		4.80%

[1] All notes are presented net of unamortized discount and debt issuance costs, where applicable.

[2] Other long-term debt represents a mix of fixed and variable rate borrowings in various foreign currencies with various maturities.

[3] Pound Sterling denominated notes are translated at the spot rates of $1.46 and $1.54 to one British Pound Sterling at May 31, 2016 and August 31, 2015, respectively.

[4] Also includes interest rate swap fair market value adjustments. See Note 11, Fair Value Measurements for additional fair value disclosures.

[5] Euro denominated notes are translated at the spot rate of $1.12 to one Euro at May 31, 2016 and August 31, 2015, respectively.