Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment reporting information profit (loss)
Revenue	$ 830,914	$ 875,449	$ 2,629,351	$ 2,689,849
Reconciliation of Segment EBIT to net income (loss):
Interest expense, net	(23,685)	(24,312)	(66,816)	(73,816)
Loss on debt redemption/refinancing	0	(3,193)	(4,993)	(55,576)
Gain on sale of businesses, including transaction costs	8,398	0	10,920	10,201
Gain on sale of assets	0	0	14,372	1,434
(Provision) benefit for income taxes	(4,642)	1,525	(1,819)	10,602
Income from continuing operations	5,487	8,495	30,644	1,716
Income (loss) from discontinued operations, net of tax	0	572	0	(4,334)
Net income (loss)	5,487	9,067	30,644	(2,618)
Operating Segments
Segment reporting information profit (loss)
EBIT	80,914	99,062	271,016	318,631
Segment Reconciling Items
Reconciliation of Segment EBIT to net income (loss):
Unallocated corporate expenses	(42,908)	(49,176)	(141,537)	(162,957)
Restructuring charges	(4,264)	(3,701)	(12,672)	(11,434)
Interest expense, net	(37,377)	(36,022)	(104,643)	(109,185)
Loss on debt redemption/refinancing	0	(3,193)	(4,993)	(55,576)
Gain on sale of businesses, including transaction costs	13,764	0	10,920	10,201
Gain on sale of assets	0	0	14,372	1,434
(Provision) benefit for income taxes	(4,642)	1,525	(1,819)	10,602
Global Ecommerce
Reconciliation of Segment EBIT to net income (loss):
Increase (decrease) in transportation costs	3,000		9,000
Presort Services
Reconciliation of Segment EBIT to net income (loss):
Increase (decrease) in transportation costs	(3,000)		(9,000)
Digital Commerce Solutions | Global Ecommerce
Segment reporting information profit (loss)
Revenue from contracts with customers	354,326	398,011	1,166,623	1,229,526
EBIT	(34,881)	(20,950)	(77,402)	(58,157)
Digital Commerce Solutions | Presort Services
Segment reporting information profit (loss)
Revenue from contracts with customers	144,824	139,296	444,302	417,041
EBIT	20,561	21,062	53,044	56,247
SendTech Solutions
Segment reporting information profit (loss)
Revenue from contracts with customers	331,764	338,142	1,018,426	1,043,282
SendTech Solutions | Operating Segments
Segment reporting information profit (loss)
EBIT	$ 95,234	$ 98,950	$ 295,374	$ 320,541