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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 1,502	$ 1,440
Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	367	352
Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	469	414
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	78	76
Total Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	914	842
Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	533	506
Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer		56
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	65	54
Total Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	598	616
Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	914	842
Payments | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	367	352
Payments | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	469	414
Payments | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	78	76
Payments | Total Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	914	842
Payments | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Payments | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer		0
Payments | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Payments | Total Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	598	616
Financial | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Financial | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Financial | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Financial | Total Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Financial | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	533	506
Financial | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer		56
Financial | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	65	54
Financial | Total Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	598	616
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(10)	(18)
Corporate and Other | Digital Money Movement
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Card and Related Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Total Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Account and Item Processing
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Lending Solutions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer		0
Corporate and Other | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Total Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Payments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Corporate and Other | Financial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 0	$ 0
Geographic Concentration Risk | Sales Revenue, Net | Foreign Tax Authority
Disaggregation of Revenue [Line Items]
Percentage of concentration risk	6.00%	5.00%

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

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