Revenue - Disaggregation of Revenue by Revenue Source (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of revenue
Revenues by Segment	$ 760,798	$ 811,096	$ 1,529,878	$ 1,643,810
Inter-segment eliminations
Disaggregation of revenue
Revenues by Segment	(3,263)	(3,522)	(7,334)	(8,783)
Truckload Transportation Services | Operating Segments
Disaggregation of revenue
Revenues by Segment	537,069	570,192	1,088,195	1,158,522
Werner Logistics | Operating Segments
Disaggregation of revenue
Revenues by Segment	208,912	224,549	411,394	453,218
Transportation services
Disaggregation of revenue
Revenues by Segment	742,718	791,219	1,492,255	1,602,957
Other revenues
Disaggregation of revenue
Revenues by Segment	$ 18,080	$ 19,877	$ 37,623	$ 40,853