Revenue (Disaggregates of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	$ 915,197	$ 796,268
Total consolidated revenue	915,197	796,268
ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	750,493	629,233
Products/services transferred at a point in time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	77,538	78,374
Products/services transferred over time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	672,955	550,859
Sales And Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	750,493	629,233
Revenue from leasing transactions and financing	164,704	167,035
Total consolidated revenue	915,197	796,268
Business services
Disaggregation of Revenue [Line Items]
Revenue from products and services	570,454	444,379
Revenue from leasing transactions and financing	0	0
Total consolidated revenue	570,454	444,379
Support services
Disaggregation of Revenue [Line Items]
Revenue from products and services	118,697	122,015
Revenue from leasing transactions and financing	0	0
Total consolidated revenue	118,697	122,015
Financing
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	77,812	89,078
Total consolidated revenue	77,812	89,078
Equipment sales
Disaggregation of Revenue [Line Items]
Revenue from products and services	19,118	17,130
Revenue from leasing transactions and financing	67,685	59,143
Total consolidated revenue	86,803	76,273
Supplies
Disaggregation of Revenue [Line Items]
Revenue from products and services	42,224	45,709
Revenue from leasing transactions and financing	0	0
Total consolidated revenue	42,224	45,709
Rentals
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	19,207	18,814
Total consolidated revenue	19,207	18,814
Global Ecommerce
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	413,086	292,323
Global Ecommerce | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	413,086	292,323
Global Ecommerce | Products/services transferred at a point in time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Global Ecommerce | Products/services transferred over time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	413,086	292,323
Global Ecommerce | Sales And Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	413,086	292,323
Global Ecommerce | Business services
Disaggregation of Revenue [Line Items]
Revenue from products and services	413,086	292,323
Global Ecommerce | Support services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Global Ecommerce | Financing
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
Global Ecommerce | Equipment sales
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
Global Ecommerce | Supplies
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Global Ecommerce | Rentals
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
Presort Services
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	143,126	140,720
Presort Services | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	143,126	140,720
Presort Services | Products/services transferred at a point in time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Presort Services | Products/services transferred over time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	143,126	140,720
Presort Services | Sales And Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	143,126	140,720
Presort Services | Business services
Disaggregation of Revenue [Line Items]
Revenue from products and services	143,126	140,720
Presort Services | Support services
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Presort Services | Financing
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
Presort Services | Equipment sales
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
Presort Services | Supplies
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Presort Services | Rentals
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	0	0
SendTech Solutions
Disaggregation of Revenue [Line Items]
Revenue from leasing transactions and financing	358,985	363,225
SendTech Solutions | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	194,281	196,190
SendTech Solutions | Products/services transferred at a point in time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	77,538	78,374
SendTech Solutions | Products/services transferred over time | ASC 606
Disaggregation of Revenue [Line Items]
Revenue from products and services	116,743	117,816
SendTech Solutions | Sales And Services
Disaggregation of Revenue [Line Items]
Revenue from products and services	194,281	196,190
SendTech Solutions | Business services
Disaggregation of Revenue [Line Items]
Revenue from products and services	14,242	11,336
SendTech Solutions | Support services
Disaggregation of Revenue [Line Items]
Revenue from products and services	118,697	122,015
SendTech Solutions | Financing
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	77,812	89,078
SendTech Solutions | Equipment sales
Disaggregation of Revenue [Line Items]
Revenue from products and services	19,118	17,130
Revenue from leasing transactions and financing	67,685	59,143
SendTech Solutions | Supplies
Disaggregation of Revenue [Line Items]
Revenue from products and services	42,224	45,709
SendTech Solutions | Rentals
Disaggregation of Revenue [Line Items]
Revenue from products and services	0	0
Revenue from leasing transactions and financing	$ 19,207	$ 18,814