Intangible Assets Acquired Through Business Combinations and Goodwill (Goodwill) (Details) $ in Millions	6 Months Ended
Jul. 31, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 25,134
Other acquisitions and adjustments	69
Goodwill, ending balance	26,301
Evergage
Goodwill [Roll Forward]
Goodwill acquired	74
Vlocity
Goodwill [Roll Forward]
Goodwill acquired	$ 1,024

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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