CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Income Statement [Abstract]
Sales	$ 34,862	$ 33,756	$ 68,244	$ 67,656
Cost of sales	27,807	26,047	54,236	52,374
Gross profit	7,055	7,708	14,008	15,283
Selling, general and administrative expenses	6,934	6,565	20,091	12,956
Equity earnings in AmerisourceBergen	75	103	129	202
Operating income (loss)	197	1,246	(5,954)	2,529
Other income (expense), net	552	(198)	1,544	2,418
Earnings (loss) before interest and income tax provision (benefit)	749	1,047	(4,410)	4,947
Interest expense, net	141	100	252	186
Earnings (loss) before income tax provision (benefit)	607	947	(4,662)	4,761
Income tax provision (benefit)	70	172	(1,377)	447
Post-tax earnings from other equity method investments	6	31	13	24
Net earnings (loss)	544	806	(3,272)	4,337
Net loss attributable to non-controlling interests	(159)	(78)	(253)	(126)
Net earnings (loss) attributable to Walgreens Boots Alliance, Inc.	703	883	(3,018)	4,463
Net earnings (loss) per common share:
Net earnings (loss) attributable to Walgreens Boots Alliance, Inc.	$ 703	$ 883	$ (3,018)	$ 4,463
Net earnings (loss) per common share:
Basic (in dollars per share)	$ 0.81	$ 1.02	$ (3.50)	$ 5.16
Diluted (in dollars per share)	$ 0.81	$ 1.02	$ (3.50)	$ 5.15
Weighted average common shares outstanding:
Basic (in shares)	862.6	863.5	863.1	864.6
Diluted (in shares)	863.4	865.2	863.1	866.4