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Supplemental balance sheet and cash flow information (goodwill) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2021
Goodwill [Roll Forward] |  |
Goodwill, gross, beginning of year |  | $ 1,288,825
Accumulated impairment charges, beginning of year |  | (585,867)
Goodwill, net of accumulated impairment charges, beginning of year |  | 702,958
Goodwill resulting from acquisition (Note 6) | $ 736,308 | 736,308
Currency translation adjustment |  | 37
Goodwill, gross, end of period | 2,025,170 | 2,025,170
Accumulated impairment charges, end of period | (585,867) | (585,867)
Goodwill, net of accumulated impairment charges, end of period | 1,439,303 | 1,439,303
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 resulting from acquisition (Note 6) |  | 736,308
Goodwill, gross, end of period | 904,473 | 904,473
Accumulated impairment charges, end of period | 0 | 0
Goodwill, net of accumulated impairment charges, end of period | 904,473 | 904,473
Reportable business segments [Member] | Cloud Solutions [Member] |  |
Goodwill [Roll Forward] |  |
Goodwill, gross, beginning of year |  | 432,984
Accumulated impairment charges, beginning of year |  | (392,168)
Goodwill, net of accumulated impairment charges, beginning of year |  | 40,816
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] |  |
Goodwill [Roll Forward] |  |
Goodwill, gross, beginning of year |  | 252,864
Accumulated impairment charges, beginning of year |  | (193,699)
Goodwill, net of accumulated impairment charges, beginning of year |  | 59,165
Currency translation adjustment |  | 37
Goodwill, gross, end of period | 252,901 | 252,901
Accumulated impairment charges, end of period | (193,699) | (193,699)
Goodwill, net of accumulated impairment charges, end of period | 59,202 | 59,202
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 | 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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