Segment Information (EBIT) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciling items:
Restructuring charges	$ (18,715,000)	$ (19,003,000)	$ (20,712,000)
Goodwill impairment	0	0	(198,169,000)
Gain on sale of assets	14,372,000	1,434,000	21,969,000
Gain (loss) on sale of businesses, including transaction costs	12,205,000	10,201,000	0
Loss on debt redemption/refinancing	(4,993,000)	(56,209,000)	(36,987,000)
(Provision) benefit for income taxes	(2,940,000)	10,922,000	(7,122,000)
Income (loss) from continuing operations	36,940,000	3,507,000	(190,491,000)
(Loss) income from discontinued operations, net of tax	0	(4,858,000)	10,115,000
Net income (loss)	36,940,000	(1,351,000)	(180,376,000)
Digital Commerce Solutions | Global Ecommerce
Segment Reporting Information [Line Items]
EBIT	(100,308,000)	(98,673,000)	(82,894,000)
Digital Commerce Solutions | Presort Services
Segment Reporting Information [Line Items]
EBIT	82,430,000	79,721,000	55,799,000
Operating Segments
Segment Reporting Information [Line Items]
EBIT	383,031,000	410,463,000	415,553,000
Operating Segments | SendTech Solutions
Segment Reporting Information [Line Items]
EBIT	400,909,000	429,415,000	442,648,000
Reconciling Items
Reconciling items:
Interest, net	(141,769,000)	(143,945,000)	(153,915,000)
Unallocated corporate expenses	(204,251,000)	(207,774,000)	(200,406,000)
Restructuring charges	(18,715,000)	(19,003,000)	(20,712,000)
Goodwill impairment	0	0	(198,169,000)
Gain on sale of assets	14,372,000	1,434,000	11,908,000
Gain (loss) on sale of businesses, including transaction costs	12,205,000	7,619,000	(641,000)
Loss on debt redemption/refinancing	$ (4,993,000)	$ (56,209,000)	$ (36,987,000)