Business Combinations - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jan. 31, 2021	Jun. 30, 2020	Jan. 31, 2020	Oct. 31, 2019	Aug. 31, 2019	Jun. 30, 2019	Jan. 31, 2019
Business Acquisition [Line Items]
Contract asset	$ 477		$ 449
Goodwill	$ 26,318		$ 25,134				$ 12,851
Vlocity
Business Acquisition [Line Items]
Cash and cash equivalents		$ 12
Accounts receivable		22
Goodwill		1,024
Intangible assets		473
Other assets		15
Accounts payable, accrued expenses and other liabilities, current and noncurrent		(35)
Unearned revenue		(64)
Deferred tax liability		(67)
Net assets acquired		$ 1,380
Tableau
Business Acquisition [Line Items]
Cash and cash equivalents					$ 644
Marketable securities					456
Accounts receivable					174
Contract asset					131
Operating lease right-of-use assets					361
Acquired customer contract asset					56
Goodwill					10,806
Intangible assets					3,252
Other assets					116
Accounts payable, accrued expenses and other liabilities, current and noncurrent					(257)
Unearned revenue					(242)
Operating lease liabilities					(332)
Deferred tax liability and income tax payable					(320)
Net assets acquired					$ 14,845
ClickSoftware
Business Acquisition [Line Items]
Cash and cash equivalents				$ 38
Accounts receivable				28
Goodwill				1,132
Intangible assets				276
Other assets				33
Accounts payable, accrued expenses and other liabilities, current and noncurrent				(55)
Unearned revenue				(40)
Deferred tax liability				(26)
Net assets acquired				$ 1,386
Salesforce.org
Business Acquisition [Line Items]
Cash and cash equivalents						$ 54
Deferred tax asset						59
Goodwill						164
Other assets						46
Accounts payable, accrued expenses and other liabilities, current and noncurrent						(39)
Unearned revenue						(138)
Deferred tax liability and income tax payable						(12)
Net assets acquired						$ 134