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Other Noncurrent Assets and Liabilities - Narratives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Noncurrent Assets and Liabilities
Restricted cash non current	$ 540	$ 0
Contingent value rights	$ 838	$ 0
Visa Europe to Visa, Inc.
Noncurrent Assets and Liabilities
Percentage of net proceeds from disposal due to previous owner per contingent value right (percent)	90.00%
Restricted cash non current	$ 540
Contingent value rights	838
Unrealized change in equity investments	5
Visa Europe to Visa, Inc. | Preferred Stock
Noncurrent Assets and Liabilities
Equity securities	$ 400

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