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SUPPLEMENTAL BALANCE SHEET AND CASH FLOW INFORMATION (goodwill) (Details) - USD ($) $ in Thousands		3 Months Ended					12 Months Ended
	Jun. 01, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020
Changes in goodwill
Goodwill, gross, beginning of year					$ 1,288,795		$ 1,288,825	$ 1,288,795
Accumulated impairment charges, beginning of year					(514,418)		(585,867)	(514,418)
Goodwill, net of accumulated impairment charges, beginning of year					774,377		702,958	774,377
Impairment charge (Note 8)		$ 0	$ 0	$ 0	(71,449)	$ (387,851)		(71,449)
Goodwill resulting from acquisition (Note 6)							727,173
Currency translation adjustment							10	30
Goodwill, gross, end of period							2,016,008	1,288,825
Accumulated impairment charges, end of period							(585,867)	(585,867)
Goodwill, net of accumulated impairment charges, end of period							1,430,141	702,958
First American [Member]
Changes in goodwill
Goodwill resulting from acquisition (Note 6)	$ 727,173						727,173
Reportable business segments [Member] | Payments [Member]
Changes in goodwill
Goodwill, gross, beginning of year					168,165		168,165	168,165
Accumulated impairment charges, beginning of year					0		0	0
Goodwill, net of accumulated impairment charges, beginning of year					168,165		168,165	168,165
Goodwill, gross, end of period							895,338	168,165
Accumulated impairment charges, end of period							0	0
Goodwill, net of accumulated impairment charges, end of period							895,338	168,165
Reportable business segments [Member] | Payments [Member] | First American [Member]
Changes in goodwill
Goodwill resulting from acquisition (Note 6)							727,173
Reportable business segments [Member] | Cloud Solutions [Member]
Changes in goodwill
Goodwill, gross, beginning of year					432,984		432,984	432,984
Accumulated impairment charges, beginning of year					(387,851)		(392,168)	(387,851)
Goodwill, net of accumulated impairment charges, beginning of year					45,133		40,816	45,133
Impairment charge (Note 8)								(4,317)
Goodwill, gross, end of period							432,984	432,984
Accumulated impairment charges, end of period							(392,168)	(392,168)
Goodwill, net of accumulated impairment charges, end of period							40,816	40,816
Reportable business segments [Member] | Promotional Solutions [Member]
Changes in goodwill
Goodwill, gross, beginning of year					252,834		252,864	252,834
Accumulated impairment charges, beginning of year					(126,567)		(193,699)	(126,567)
Goodwill, net of accumulated impairment charges, beginning of year					126,267		59,165	126,267
Impairment charge (Note 8)								(67,132)
Currency translation adjustment							10	30
Goodwill, gross, end of period							252,874	252,864
Accumulated impairment charges, end of period							(193,699)	(193,699)
Goodwill, net of accumulated impairment charges, end of period							59,175	59,165
Reportable business segments [Member] | Checks [Member]
Changes in goodwill
Goodwill, gross, beginning of year					434,812		434,812	434,812
Accumulated impairment charges, beginning of year					0		0	0
Goodwill, net of accumulated impairment charges, beginning of year					$ 434,812		434,812	434,812
Goodwill, gross, end of period							434,812	434,812
Accumulated impairment charges, end of period							0	0
Goodwill, net of accumulated impairment charges, end of period							$ 434,812	$ 434,812

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