CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract]
Net Earnings	$ 2,060us-gaap_ProfitLoss	$ 730us-gaap_ProfitLoss	$ 2,937us-gaap_ProfitLoss	$ 1,462us-gaap_ProfitLoss
Other comprehensive income (loss), net of tax:
Postretirement liability	(8)	(2)	(9)	6
Unrealized (loss) on cash flow hedges	0	0	(12)	0
Changes in unrecognized gain (loss) on available-for-sale investments	90	(49)	189	35
Share of other comprehensive income (loss) of Alliance Boots	92	(19)	113	(56)
Currency translation adjustments	(301)	116	(490)	281
Total Other Comprehensive Income (loss)	(127)	46	(209)	266
Total Comprehensive Income (loss)	1,933us-gaap_ComprehensiveIncomeNetOfTax	776us-gaap_ComprehensiveIncomeNetOfTax	2,728us-gaap_ComprehensiveIncomeNetOfTax	1,728us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income attributable to noncontrolling interests	13	14	40	23
Comprehensive income attributable to Walgreens Boots Alliance, Inc.	$ 1,920	$ 762	$ 2,688	$ 1,705

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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