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Supplemental balance sheet and cash flow information (goodwill) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Roll Forward]
Goodwill, gross, beginning of year	$ 1,288,825
Accumulated impairment charges, beginning of year	(551,981)
Goodwill, net of accumulated impairment charges, beginning of year	736,844
Currency translation adjustment	18
Goodwill, gross, end of period	1,288,843
Accumulated impairment charges, end of period	(551,981)
Goodwill, net of accumulated impairment charges, end of period	736,862
Reportable business segments [Member] | Payments [Member]
Goodwill [Roll Forward]
Goodwill, gross, beginning of year	168,165
Accumulated impairment charges, beginning of year	0
Goodwill, net of accumulated impairment charges, beginning of year	168,165
Goodwill, gross, end of period	168,165
Accumulated impairment charges, end of period	0
Goodwill, net of accumulated impairment charges, end of period	168,165
Reportable business segments [Member] | Cloud Solutions [Member]
Goodwill [Roll Forward]
Goodwill, gross, beginning of year	432,984
Accumulated impairment charges, beginning of year	(362,058)
Goodwill, net of accumulated impairment charges, beginning of year	70,926
Goodwill, gross, end of period	432,984
Accumulated impairment charges, end of period	(362,058)
Goodwill, net of accumulated impairment charges, end of period	70,926
Reportable business segments [Member] | Promotional Solutions [Member]
Goodwill [Roll Forward]
Goodwill, gross, beginning of year	252,864
Accumulated impairment charges, beginning of year	(189,923)
Goodwill, net of accumulated impairment charges, beginning of year	62,941
Currency translation adjustment	18
Goodwill, gross, end of period	252,882
Accumulated impairment charges, end of period	(189,923)
Goodwill, net of accumulated impairment charges, end of period	62,959
Reportable business segments [Member] | Checks [Member]
Goodwill [Roll Forward]
Goodwill, gross, beginning of year	434,812
Accumulated impairment charges, beginning of year	0
Goodwill, net of accumulated impairment charges, beginning of year	434,812
Goodwill, gross, end of period	434,812
Accumulated impairment charges, end of period	0
Goodwill, net of accumulated impairment charges, end of period	$ 434,812

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-SubTopic 210
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