Goodwill and Acquired Intangible Assets - Acquired intangible assets (Details) - USD ($) $ in Millions	Jul. 31, 2023	Jul. 31, 2022
Finite-Lived Intangible Assets [Abstract]
Cost	$ 8,535	$ 8,531
Accumulated amortization	(2,116)	(1,470)
Acquired intangible assets, net	$ 6,419	$ 7,061
Weighted-average life in years	13 years	13 years
Expected Future Amortization Expense
2024	$ 626
2025	624
2026	620
2027	594
2028	581
Thereafter	3,374
Total expected future amortization expense	6,419	$ 7,061
Customer Lists / User Relationships
Finite-Lived Intangible Assets [Abstract]
Cost	6,197	6,197
Accumulated amortization	(1,178)	(748)
Acquired intangible assets, net	$ 5,019	$ 5,449
Weighted-average life in years	14 years	14 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 5,019	$ 5,449
Purchased Technology
Finite-Lived Intangible Assets [Abstract]
Cost	1,616	1,612
Accumulated amortization	(756)	(593)
Acquired intangible assets, net	$ 860	$ 1,019
Weighted-average life in years	8 years	8 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 860	$ 1,019
Trade Names and Logos
Finite-Lived Intangible Assets [Abstract]
Cost	680	680
Accumulated amortization	(140)	(87)
Acquired intangible assets, net	$ 540	$ 593
Weighted-average life in years	13 years	13 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 540	$ 593
Covenants Not to Compete or Sue
Finite-Lived Intangible Assets [Abstract]
Cost	42	42
Accumulated amortization	(42)	(42)
Acquired intangible assets, net	$ 0	$ 0
Weighted-average life in years	0 years	0 years
Expected Future Amortization Expense
Total expected future amortization expense	$ 0	$ 0