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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 1,512	$ 1,420	$ 3,014	$ 2,860
Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue	362	356	729	708
Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue	469	400	938	814
Other
Disaggregation of Revenue [Line Items]
Revenue	86	81	164	157
Total Payments
Disaggregation of Revenue [Line Items]
Revenue	917	837	1,831	1,679
Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue	526	530	1,059	1,036
Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue				56
Other
Disaggregation of Revenue [Line Items]
Revenue	78	60	143	114
Financial Subsegment [Member]
Disaggregation of Revenue [Line Items]
Revenue	604	590	1,202	1,206
Payments
Disaggregation of Revenue [Line Items]
Revenue	917	837	1,831	1,679
Payments | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue	362	356	729	708
Payments | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue	469	400	938	814
Payments | Other
Disaggregation of Revenue [Line Items]
Revenue	86	81	164	157
Payments | Total Payments
Disaggregation of Revenue [Line Items]
Revenue	917	837	1,831	1,679
Payments | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Payments | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue				0
Payments | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Payments | Financial Subsegment [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Financial
Disaggregation of Revenue [Line Items]
Revenue	604	590	1,202	1,206
Financial | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Financial | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Financial | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Financial | Total Payments
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Financial | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue	526	530	1,059	1,036
Financial | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue				56
Financial | Other
Disaggregation of Revenue [Line Items]
Revenue	78	60	143	114
Financial | Financial Subsegment [Member]
Disaggregation of Revenue [Line Items]
Revenue	604	590	1,202	1,206
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue	(9)	(7)	(19)	(25)
Corporate and Other | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Total Payments
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue				0
Corporate and Other | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Financial Subsegment [Member]
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Payments
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Corporate and Other | Financial
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 0
Geographic Concentration Risk | Sales Revenue, Net | Foreign Tax Authority
Disaggregation of Revenue [Line Items]
Percentage of concentration risk			6.00%	5.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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