Revenue (Disaggregates of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	$ 783,751	$ 830,914	$ 2,394,770	$ 2,629,351
Total consolidated revenue	783,751	830,914	2,394,770	2,629,351
ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	639,890	683,891	1,959,872	2,172,735
ASC 606 | Products/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from products and services	71,634	76,667	222,193	231,194
ASC 606 | Products/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from products and services	568,256	607,224	1,737,679	1,941,541
Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	313,161	354,326	974,306	1,166,623
Revenue from leasing transactions and financing	313,161	354,326	974,306	1,166,623
Global Ecommerce | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	313,161	354,326	974,306	1,166,623
Global Ecommerce | ASC 606 | Products/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Global Ecommerce | ASC 606 | Products/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from products and services	313,161	354,326	974,306	1,166,623
Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	152,451	144,824	454,460	444,302
Revenue from leasing transactions and financing	152,451	144,824	454,460	444,302
Presort Services | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	152,451	144,824	454,460	444,302
Presort Services | ASC 606 | Products/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Presort Services | ASC 606 | Products/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from products and services	152,451	144,824	454,460	444,302
SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	318,139	331,764	966,004	1,018,426
Revenue from leasing transactions and financing	318,139	331,764	966,004	1,018,426
SendTech Solutions | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	174,278	184,741	531,106	561,810
SendTech Solutions | ASC 606 | Products/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from products and services	71,634	76,667	222,193	231,194
SendTech Solutions | ASC 606 | Products/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from products and services	102,644	108,074	308,913	330,616
Sales And Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	639,890	683,891	1,959,872	2,172,735
Revenue from leasing transactions and financing	143,861	147,023	434,898	456,616
Total consolidated revenue	783,751	830,914	2,394,770	2,629,351
Sales And Services | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	313,161	354,326	974,306	1,166,623
Sales And Services | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	152,451	144,824	454,460	444,302
Sales And Services | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	174,278	184,741	531,106	561,810
Business services
Disaggregation of Revenue [Line Items]
Revenue from products and services	483,987	518,405	1,480,975	1,667,267
Revenue from leasing transactions and financing	0	0	0	0
Total consolidated revenue	483,987	518,405	1,480,975	1,667,267
Business services | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	313,161	354,326	974,306	1,166,623
Business services | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	152,451	144,824	454,460	444,302
Business services | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	18,375	19,255	52,209	56,342
Support services
Disaggregation of Revenue [Line Items]
Revenue from products and services	101,855	107,642	310,454	325,619
Revenue from leasing transactions and financing	0	0	0	0
Total consolidated revenue	101,855	107,642	310,454	325,619
Support services | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Support services | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Support services | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	101,855	107,642	310,454	325,619
Financing
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Revenue from leasing transactions and financing	68,572	67,757	202,323	207,084
Total consolidated revenue	68,572	67,757	202,323	207,084
Financing | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Financing | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Financing | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Equipment sales
Disaggregation of Revenue [Line Items]
Revenue from products and services	18,353	20,389	57,408	63,088
Revenue from leasing transactions and financing	58,352	63,139	181,358	199,722
Total consolidated revenue	76,705	83,528	238,766	262,810
Equipment sales | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Equipment sales | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Equipment sales | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	18,353	20,389	57,408	63,088
Supplies
Disaggregation of Revenue [Line Items]
Revenue from products and services	35,695	37,455	111,035	116,761
Revenue from leasing transactions and financing	0	0	0	0
Total consolidated revenue	35,695	37,455	111,035	116,761
Supplies | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Supplies | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Supplies | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	35,695	37,455	111,035	116,761
Rentals
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Revenue from leasing transactions and financing	16,937	16,127	51,217	49,810
Total consolidated revenue	16,937	16,127	51,217	49,810
Rentals | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Rentals | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Rentals | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0	0	0
Revenue from leasing transactions and financing
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	143,861	147,023	434,898	456,616
Revenue from leasing transactions and financing | Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	0	0	0	0
Revenue from leasing transactions and financing | Presort Services
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	0	0	0	0
Revenue from leasing transactions and financing | SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	$ 143,861	$ 147,023	$ 434,898	$ 456,616