CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Income Statement [Abstract]
Sales	$ 33,793	$ 30,740
Cost of sales	26,152	23,399
Gross profit	7,641	7,341
Selling, general and administrative expenses	6,280	5,910
Equity earnings (loss) in AmerisourceBergen	39	(112)
Operating income	1,400	1,319
Other income (expense)	26	(134)
Earnings before interest and income tax provision	1,427	1,185
Interest expense, net	161	149
Earnings before income tax provision	1,265	1,036
Income tax provision	180	227
Post tax earnings from other equity method investments	15	13
Net earnings	1,100	822
Net earnings (loss) attributable to noncontrolling interests	(23)	1
Net earnings attributable to Walgreens Boots Alliance, Inc.	$ 1,123	$ 821
Net earnings per common share:
Basic (in dollars per share)	$ 1.18	$ 0.82
Diluted (in dollars per share)	$ 1.18	$ 0.81
Weighted average common shares outstanding:
Basic (in shares)	948.2	1,006.1
Diluted (in shares)	951.4	1,011.1