Segment Information (Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 783,751	$ 830,914	$ 2,394,770	$ 2,629,351
Global Ecommerce
Segment Reporting Information [Line Items]
Total from contracts with customers	313,161	354,326	974,306	1,166,623
Presort Services
Segment Reporting Information [Line Items]
Total from contracts with customers	152,451	144,824	454,460	444,302
SendTech Solutions
Segment Reporting Information [Line Items]
Total from contracts with customers	$ 318,139	$ 331,764	$ 966,004	$ 1,018,426