Short-Term Borrowings and Long-Term Debt, Long-Term Debt (Details) $ in Millions		12 Months Ended
		Aug. 31, 2015 USD ($) $ / £ $ / €		Aug. 10, 2015	Aug. 31, 2014 USD ($)
Long-Term Debt [Abstract]
Other	[1],[2]	$ 24			$ 0
Total long-term debt	[1]	13,315			3,716
Assumed Loans [Member]
Long-Term Debt [Abstract]
Loans assumed through the purchase of land and buildings	[1]	$ 20			32
Interest rate, minimum	[1]	5.00%
Interest rate, maximum	[1]	8.75%
Maturity year, start	[1]	2015
Maturity year, end	[1]	2035
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]	$ 2,229			0
Maturity year	[1],[3]	2019
1.800% Unsecured Notes Due 2017 [Member]
Long-Term Debt [Abstract]
Carrying value of notes, net of unamortized discount and interest rate swap FMV adjustment	[1]	$ 0			994
Stated interest rate		1.80%	[1]	1.80%
Maturity year	[1]	2017
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],[4]	$ 746			0
Stated interest rate	[1],[4]	1.75%
Maturity year	[1],[4]	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]	$ 250			1,007
Stated 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],[3]	$ 1,243			0
Stated interest rate	[1],[3]	2.70%
Maturity year	[1],[3]	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]	$ 612			0
Stated interest rate	[1],[3]	2.875%
Maturity year	[1],[3]	2020
Spot rate | $ / £		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]	$ 1,241			0
Stated 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			1,192
Stated 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],[3]	$ 1,985			0
Stated interest rate	[1],[3]	3.80%
Maturity year		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]	$ 459			0
Stated interest rate	[1],[3]	3.60%
Maturity year	[1],[3]	2025
Spot rate | $ / £		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]	$ 836			0
Stated interest rate	[1],[5]	2.125%
Maturity year	[1],[5]	2026
Spot rate | $ / €		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			0
Stated 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			491
Stated 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]	$ 1,491			$ 0
Stated interest rate	[1]	4.80%
Maturity year		2044

[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 August 31, 2015 spot rate of $1.54 to one British Pound Sterling.

[4] Also includes interest rate swap fair market value adjustments, see Note 12, Fair Value Measurements for additional fair value disclosures.

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