The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014	Aug. 31, 2014
Business Acquisition [Line Items]
Amortization expense for intangible assets	$ 209us-gaap_AmortizationOfIntangibleAssets	$ 73us-gaap_AmortizationOfIntangibleAssets	$ 276us-gaap_AmortizationOfIntangibleAssets	$ 143us-gaap_AmortizationOfIntangibleAssets
Foreign currency adjustments related to carrying amount			(129)
Currency translation adjustments related to accumulated amortization			46
Goodwill	17,044us-gaap_Goodwill		17,044us-gaap_Goodwill		2,359us-gaap_Goodwill
Indefinite-lived Intangible Assets, Translation Adjustments			(76)
Alliance Boots [Member]
Business Acquisition [Line Items]
Goodwill	15,556		15,556
Intangible assets	$ 11,461		$ 11,461