Acquisitions - Schedule of Components of the Preliminary Intangible Assets Associated with the Acquisition (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 04, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Total, Net Book Value	$ 14,507		$ 10,258
Ellie Mae Intermediate Holdings I
Business Acquisition [Line Items]
Total	4,431	$ 4,431
Accumulated Amortization	(23)
Total, Net Book Value	4,408
Ellie Mae Intermediate Holdings I | In-process Research & Development
Business Acquisition [Line Items]
In-process Research & Development	67
In-process Research & Development, Net Book Value	67
Customer relationships | Ellie Mae Intermediate Holdings I
Business Acquisition [Line Items]
Intangible assets	3,125
Accumulated Amortization	(11)
Intangible assets, Net Book Value	$ 3,114
Customer relationships | Ellie Mae Intermediate Holdings I | Minimum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	10 years
Customer relationships | Ellie Mae Intermediate Holdings I | Maximum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	20 years
Backlog | Ellie Mae Intermediate Holdings I
Business Acquisition [Line Items]
Intangible assets	$ 300
Accumulated Amortization	(3)
Intangible assets, Net Book Value	$ 297
Backlog | Ellie Mae Intermediate Holdings I | Minimum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	5 years
Backlog | Ellie Mae Intermediate Holdings I | Maximum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	7 years
Trademark/Tradenames | Ellie Mae Intermediate Holdings I
Business Acquisition [Line Items]
Intangible assets	$ 200
Accumulated Amortization	(1)
Intangible assets, Net Book Value	$ 199
Trademark/Tradenames | Ellie Mae Intermediate Holdings I | Minimum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	5 years
Trademark/Tradenames | Ellie Mae Intermediate Holdings I | Maximum
Business Acquisition [Line Items]
Useful life of intangible assets (in years)	20 years
Developed Technology | Ellie Mae Intermediate Holdings I
Business Acquisition [Line Items]
Intangible assets	$ 739
Accumulated Amortization	(8)
Intangible assets, Net Book Value	$ 731
Useful life of intangible assets (in years)	7 years