Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The fair value of assets acquired in noncash investing or financing activities.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

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Fair value portion of inventory expected to be realized or consumed after one year or normal operating cycle, if longer.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Amount of increase in asset representing future economic benefits arising from synergies in a business combination that are directly attributable to the segment.

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Goodwill based on a with and without analysis whereby the difference between the fair value of a segment before the acquisition and its fair value after the acquisition represents the amount of goodwill assigned to that segment.

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Preliminary amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions, The Preliminary Identified Definite and Indefinite Lived Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Aug. 31, 2015	Dec. 31, 2014
Indefinite-Lived Intangible Assets [Roll Forward]
Goodwill	$ 16,195		$ 16,372
Equity interest in Alliance Boots	45.00%
Selling, general and administrative expenses	$ 6,034	$ 4,456
Fair value of the assets acquired	3,700
Estimated manufacturing profit in acquired finished goods inventory capitalized	107
Retail Pharmacy International [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Goodwill	3,819		3,898
Retail Pharmacy USA [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Goodwill	8,940		8,940
Preliminary goodwill			7,300
Goodwill arising from synergies	3,500
Goodwill based on a with and without analysis	3,800
Pharmaceutical Wholesale [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Goodwill	3,436		3,534
Alliance Boots [Member]
Definite-Lived Intangible Assets [Roll Forward]
Amount	2,545
Indefinite-Lived Intangible Assets [Roll Forward]
Amount	9,146
Goodwill	$ 14,849
Equity interest in Alliance Boots	45.00%			100.00%
Selling, general and administrative expenses	$ 0	$ 24	$ 87
Trade Names and Trademarks [Member] \| Alliance Boots [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Amount	6,657
Pharmacy Licenses [Member] \| Alliance Boots [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Amount	$ 2,489
Customer Relationships [Member] \| Alliance Boots [Member]
Definite-Lived Intangible Assets [Roll Forward]
Weighted-Average Useful Life (in years)	12 years
Amount	$ 1,311
Loyalty Card Holders [Member] \| Alliance Boots [Member]
Definite-Lived Intangible Assets [Roll Forward]
Weighted-Average Useful Life (in years)	20 years
Amount	$ 742
Trade Names and Trademarks [Member] \| Alliance Boots [Member]
Definite-Lived Intangible Assets [Roll Forward]
Weighted-Average Useful Life (in years)	9 years
Amount	$ 399
Favorable Lease Interests [Member] \| Alliance Boots [Member]
Definite-Lived Intangible Assets [Roll Forward]
Weighted-Average Useful Life (in years)	7 years
Amount	$ 93