CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Income Statement [Abstract]
Sales	$ 32,597	$ 34,030	$ 100,254	$ 98,247
Cost of sales	26,025	26,877	78,399	77,684
Gross profit	6,572	7,153	21,855	20,564
Selling, general and administrative expenses	7,019	6,116	19,975	17,936
Equity earnings (loss) in AmerisourceBergen	127	97	330	(1,196)
Operating (loss) income	(320)	1,134	2,209	1,432
Other income	410	159	2,829	473
Earnings before interest and tax	90	1,294	5,038	1,905
Interest expense, net	108	545	295	817
(Loss) earnings before tax	(18)	749	4,743	1,088
Income tax (benefit) provision	(242)	246	205	81
Post tax earnings from other equity method investments	5	575	29	604
Net earnings from continuing operations	229	1,078	4,566	1,610
Net earnings from discontinued operations	0	95	0	289
Net earnings	229	1,173	4,566	1,899
Net (loss) attributable to non-controlling interests - continuing operations	(60)	(27)	(186)	(25)
Net earnings attributable to non-controlling interests - discontinued operations	0	2	0	9
Net earnings attributable to Walgreens Boots Alliance, Inc.	289	1,197	4,752	1,915
Net earnings attributable to Walgreens Boots Alliance, Inc.:
Continuing operations	289	1,105	4,752	1,636
Discontinued operations	0	92	0	279
Total	$ 289	$ 1,197	$ 4,752	$ 1,915
Basic net earnings per common share:
Continuing operations (in dollars per share)	$ 0.33	$ 1.28	$ 5.50	$ 1.89
Discontinued operations (in dollars per share)	0	0.11	0	0.32
Total (in dollars per share)	0.33	1.38	5.50	2.21
Diluted net earnings per common share:
Continuing operations (in dollars per share)	0.33	1.27	5.49	1.89
Discontinued operations (in dollars per share)	0	0.11	0	0.32
Total (in dollars per share)	$ 0.33	$ 1.38	$ 5.49	$ 2.21
Weighted average common shares outstanding:
Basic (in shares)	864.0	864,700.0	864.4	864.7
Diluted (in shares)	865.3	867.0	866.0	866.2