Business Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Processing and services revenue	$ 1,109	$ 1,051	$ 2,176	$ 2,078
Product revenue	189	202	397	409
Total revenue	1,298	1,253	2,573	2,487
Operating income	326	307	640	578
Payments [Member]
Segment Reporting Information [Line Items]
Processing and services revenue	540	501	1,056	992
Product revenue	161	168	341	350
Total revenue	701	669	1,397	1,342
Operating income	208	185	399	365
Financial [Member]
Segment Reporting Information [Line Items]
Processing and services revenue	570	551	1,122	1,090
Product revenue	38	44	79	80
Total revenue	608	595	1,201	1,170
Operating income	209	203	413	388
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Processing and services revenue	(1)	(1)	(2)	(4)
Product revenue	(10)	(10)	(23)	(21)
Total revenue	(11)	(11)	(25)	(25)
Operating income	$ (91)	$ (81)	$ (172)	$ (175)