CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (UNAUDITED) [Abstract]
Net sales	$ 28,795	$ 19,401	$ 74,922	$ 57,335
Cost of sales	21,314	13,961	55,263	41,093
Gross Profit	7,481	5,440	19,659	16,242
Selling, general and administrative expenses	6,080	4,551	16,142	13,499
Equity earnings in Alliance Boots	0	135	315	465
Operating Income	1,401	1,024	3,832	3,208
Gain on previously held equity interest	0	0	706	0
Other income	461	124	1,164	290
Earnings Before Interest and Income Tax Provision	1,862	1,148	5,702	3,498
Interest expense, net	151	35	350	113
Earnings Before Income Tax Provision	1,711	1,113	5,352	3,385
Income tax provision	408	357	1,120	1,167
Post tax earnings from equity method investments	7	0	15	0
Net Earnings	1,310	756	4,247	2,218
Net earnings attributable to noncontrolling interests	8	42	53	65
Net Earnings Attributable to Walgreens Boots Alliance, Inc. Co	$ 1,302	$ 714	$ 4,194	$ 2,153
Net earnings per common share attributable to Walgreens Boots Alliance, Inc. - basic (in dollars per share)	$ 1.19	$ 0.75	$ 4.08	$ 2.26
Net earnings per common share attributable to Walgreens Boots Alliance, Inc. - diluted (in dollars per share)	1.18	0.74	4.04	2.23
Dividends declared, per share (in dollars per share)	$ 0.3375	$ 0.3150	$ 1.0125	$ 0.9450
Average shares outstanding (in shares)	1,091.4	955.3	1,026.9	952.2
Dilutive effect of stock options (in shares)	11.0	12.3	10.8	12.1
Average diluted shares (in shares)	1,102.4	967.6	1,037.7	964.3