Acquisitions - Identifiable Intangible Assets (Details) - Nets and Ekata acquisitions $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
Other intangible assets	$ 1,917
Weighted-Average Useful Life	17 years 7 months 6 days
Developed Technology Rights
Business Acquisition [Line Items]
Other intangible assets	$ 366
Weighted-Average Useful Life	12 years 3 months 18 days
Customer Relationships
Business Acquisition [Line Items]
Other intangible assets	$ 1,530
Weighted-Average Useful Life	19 years
Other Intangible Assets
Business Acquisition [Line Items]
Other intangible assets	$ 21
Weighted-Average Useful Life	8 years