Business Combinations - Schedule of preliminary allocation of purchase price (Details) - USD ($) $ in Millions	Jul. 31, 2022	Nov. 01, 2021	Jul. 31, 2021	Dec. 03, 2020	Jul. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 13,736		$ 5,613		$ 1,654
The Rocket Science Group, LLC (Mailchimp)
Business Acquisition [Line Items]
Cash and cash equivalents		$ 42
Investments		126
Accounts receivable, net		25
Income taxes receivable		1
Prepaid expenses and other current assets		24
Long-term investments		1
Property and equipment, net		15
Operating lease right-of-use assets		31
Goodwill		8,101
Intangible assets		4,340
Long-term deferred income tax assets		6
Other assets		1
Accounts payable		(163)
Accrued compensation and related liabilities		(409)
Deferred revenue		(52)
Other current liabilities		(68)
Long-term portion of operating lease liabilities		(20)
Other long-term obligations		(5)
Total purchase price allocation		$ 11,996
Credit Karma
Business Acquisition [Line Items]
Cash and cash equivalents				$ 436
Accounts receivable, net				141
Income taxes receivable				59
Prepaid expenses and other current assets				7
Long-term investments				3
Property and equipment, net				63
Operating lease right-of-use assets				167
Goodwill				3,898
Intangible assets				3,372
Other assets				81
Accounts payable				(86)
Accrued compensation and related liabilities				(113)
Other current liabilities				(24)
Operating lease liabilities				(172)
Long-term deferred income tax liabilities				(627)
Other long-term obligations				(10)
Total purchase price allocation				$ 7,195