CONSOLIDATED CONDENSED STATEMENT OF EARNINGS (UNAUDITED) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
CONSOLIDATED CONDENSED STATEMENT OF EARNINGS (UNAUDITED) [Abstract]
Net sales	$ 26,573	$ 19,605	$ 46,127	$ 37,934
Cost of sales	19,691	13,955	33,949	27,132
Gross Profit	6,882	5,650	12,178	10,802
Selling, general and administrative expenses	5,606	4,569	10,062	8,948
Equity earnings in Alliance Boots	101	136	315	330
Operating Income (loss)	1,377	1,217	2,431	2,184
Gain on previously held equity interest	706	0	706	0
Other income (expense)	504	(59)	703	166
Earnings (loss) before Interest and Tax Provision	2,587	1,158	3,840	2,350
Interest expense, net	144	37	199	78
Earnings (loss) Before Income Tax Provision	2,443	1,121	3,641	2,272
Income tax provision	391	391	712	810
Post tax earnings from equity method investments	8	0	8	0
Net Earnings (loss)	2,060	730	2,937	1,462
Net earnings attributable to noncontrolling interests	18	14	45	23
Net Earnings (loss) Attributable to Walgreens Boots Alliance, Inc.	$ 2,042	$ 716	$ 2,892	$ 1,439
Net earnings per common share attributable to Walgreens Boots Alliance, Inc. - basic (in dollars per share)	$ 1.96	$ 0.75	$ 2.91	$ 1.51
Net earnings per common share attributable to Walgreens Boots Alliance, Inc. - diluted (in dollars per share)	$ 1.93	$ 0.74	$ 2.88	$ 1.49
Dividends declared, per share (in dollars per share)	$ 0.3375	$ 0.3150	$ 0.6750	$ 0.6300
Average shares outstanding (in shares)	1,043.6	951.9	994.7	950.6
Dilutive effect of stock options (in shares)	11.1	11.8	10.6	12.0
Average diluted shares (in shares)	1,054.7	963.7	1,005.3	962.6