Segment Information and Concentrations - Revenue and Operating Income By Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 1,891	$ 1,866
Adjusted EBITDA by segment	302	271
Russia Conflict
Segment Reporting Information [Line Items]
Total revenue	0	3
Operating Segments
Segment Reporting Information [Line Items]
Total revenue	1,891	1,863
Adjusted EBITDA by segment	302	271
Retail | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	552	546
Adjusted EBITDA by segment	97	67
Hospitality | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	223	211
Adjusted EBITDA by segment	53	41
Digital Banking | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	136	136
Adjusted EBITDA by segment	49	56
Payments & Network | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	323	299
Adjusted EBITDA by segment	83	98
Self-Service Banking | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	613	611
Adjusted EBITDA by segment	138	112
Other | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	54	68
Adjusted EBITDA by segment	(110)	(97)
Eliminations | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	(10)	(8)
Adjusted EBITDA by segment	$ (8)	$ (6)