Stockholders' Equity - Assumed Share-Based Compensation Plans (Details) - shares		6 Months Ended
	Dec. 03, 2020	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under an assumed plan		4,298,000
Credit Karma
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under an assumed plan	4,298,127
Shares available for future issuance under assumed plan	2,300,246
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance upon vesting		1,998,000
Restricted Stock Units (RSUs) | Credit Karma
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance upon vesting	1,997,881