SEGMENT INFORMATION (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Revenues	$ 1,074.3	$ 986.2	$ 1,989.8	$ 1,843.2
Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(2.2)	(1.9)	(4.3)	(3.8)
EFT Processing Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	338.5	305.4	571.0	522.6
EFT Processing Segment [Member] | Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues
Epay Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	280.1	260.9	547.5	518.0
Epay Segment [Member] | Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues
Money Transfer Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	457.9	421.8	875.6	806.4
Money Transfer Segment [Member] | Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues
Europe [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	644.5	266.0	1,144.8	1,039.9
Europe [Member] | EFT Processing Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	253.5	230.2	403.1	377.3
Europe [Member] | Epay Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	189.3	161.5	362.6	328.1
Europe [Member] | Money Transfer Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	201.7	173.4	379.1	334.5
North America [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	268.3	565.1	522.1	505.1
North America [Member] | EFT Processing Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	20.2	18.3	39.0	36.1
North America [Member] | Epay Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	43.1	48.6	87.3	92.9
North America [Member] | Money Transfer Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	205.0	199.1	395.8	376.1
Asia Pacific [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	125.2	123.4	253.9	235.4
Asia Pacific [Member] | EFT Processing Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	55.5	53.0	112.9	102.2
Asia Pacific [Member] | Epay Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	36.0	37.9	74.7	70.6
Asia Pacific [Member] | Money Transfer Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	33.7	32.5	66.3	62.6
Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	38.5	33.6	73.3	66.6
Other [Member] | EFT Processing Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	9.3	3.9	16.0	7.0
Other [Member] | Epay Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	11.7	12.9	22.9	26.4
Other [Member] | Money Transfer Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	$ 17.5	$ 16.8	$ 34.4	$ 33.2