Goodwill - Goodwill Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Goodwill [Roll Forward]
Beginning balance	$ 2,357	$ 2,241
Acquisitions	116	124
Included in disposal group as assets held for sale	(8)
Effect of currency translation adjustment	(1)	(8)
Ending balance	2,464	2,357
Cumulative goodwill impairment as of July 31, 2025	119
United States
Goodwill [Roll Forward]
Beginning balance	2,182	2,092
Acquisitions	99	91
Included in disposal group as assets held for sale	(5)
Effect of currency translation adjustment	0	(1)
Ending balance	2,276	2,182
Cumulative goodwill impairment as of July 31, 2025	108
Canada
Goodwill [Roll Forward]
Beginning balance	175	149
Acquisitions	17	33
Included in disposal group as assets held for sale	(3)
Effect of currency translation adjustment	(1)	(7)
Ending balance	188	$ 175
Cumulative goodwill impairment as of July 31, 2025	$ 11