Goodwill and Acquired Intangible Assets - Acquired intangible assets (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Finite-Lived Intangible Assets [Abstract]
Cost	$ 8,531	$ 4,166
Accumulated amortization	(1,470)	(914)
Acquired intangible assets, net	$ 7,061	$ 3,252
Weighted average life in years	13 years	14 years
Expected Future Amortization Expense
2023	$ 646
2024	624
2025	622
2026	620
2027	594
Thereafter	3,955
Total expected future amortization expense	7,061	$ 3,252
Customer Lists / User Relationships
Finite-Lived Intangible Assets [Abstract]
Cost	6,197	3,038
Accumulated amortization	(748)	(377)
Acquired intangible assets, net	$ 5,449	$ 2,661
Weighted average life in years	14 years	15 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 5,449	$ 2,661
Purchased Technology
Finite-Lived Intangible Assets [Abstract]
Cost	1,612	686
Accumulated amortization	(593)	(455)
Acquired intangible assets, net	$ 1,019	$ 231
Weighted average life in years	8 years	5 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 1,019	$ 231
Trade Names and Logos
Finite-Lived Intangible Assets [Abstract]
Cost	680	400
Accumulated amortization	(87)	(41)
Acquired intangible assets, net	$ 593	$ 359
Weighted average life in years	13 years	15 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 593	$ 359
Covenants Not to Compete or Sue
Finite-Lived Intangible Assets [Abstract]
Cost	42	42
Accumulated amortization	(42)	(41)
Acquired intangible assets, net	$ 0	$ 1
Weighted average life in years	0 years	3 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 0	$ 1