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Business Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 3,128	$ 1,412	$ 6,142	$ 4,272
Operating income	374	356	1,131	1,322
Corporate and Other
Segment Reporting Information [Line Items]
Revenue	(8)	(6)	(27)	(31)
Operating income	(527)	(98)	(762)	(75)
First Data
Segment Reporting Information [Line Items]
Revenue	1,614		1,614
First Data | Operating segments
Segment Reporting Information [Line Items]
Revenue	1,614	0	1,614	0
Operating income	396	0	396	0
Payments
Segment Reporting Information [Line Items]
Revenue	926	844	2,757	2,523
Payments | Operating segments
Segment Reporting Information [Line Items]
Revenue	926	844	2,757	2,523
Operating income	309	267	899	807
Financial
Segment Reporting Information [Line Items]
Revenue	596	574	1,798	1,780
Financial | Operating segments
Segment Reporting Information [Line Items]
Revenue	596	574	1,798	1,780
Operating income	196	187	598	590
Processing and services
Segment Reporting Information [Line Items]
Revenue	2,608	1,223	5,229	3,668
Processing and services | Corporate and Other
Segment Reporting Information [Line Items]
Revenue	13	14	40	30
Processing and services | First Data | Operating segments
Segment Reporting Information [Line Items]
Revenue	1,279	0	1,279
Processing and services | Payments | Operating segments
Segment Reporting Information [Line Items]
Revenue	754	674	2,224	1,992
Processing and services | Financial | Operating segments
Segment Reporting Information [Line Items]
Revenue	562	535	1,686	1,646
Product
Segment Reporting Information [Line Items]
Revenue	520	189	913	604
Product | Corporate and Other
Segment Reporting Information [Line Items]
Revenue	(21)	(20)	(67)	(61)
Product | First Data | Operating segments
Segment Reporting Information [Line Items]
Revenue	335	0	335	0
Product | Payments | Operating segments
Segment Reporting Information [Line Items]
Revenue	172	170	533	531
Product | Financial | Operating segments
Segment Reporting Information [Line Items]
Revenue	$ 34	$ 39	$ 112	$ 134

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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