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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of revenue
Revenue from contracts with customers	$ 257,732	$ 263,187
Operating lease income	51,718	27,246
Total operating revenues	309,450	290,433
Transferred over time
Disaggregation of revenue
Revenue from contracts with customers	249,727	255,965
Transferred over time | Residential
Disaggregation of revenue
Revenue from contracts with customers	178,596	183,847
Transferred over time | Commercial
Disaggregation of revenue
Revenue from contracts with customers	32,795	34,634
Transferred over time | Wholesale
Disaggregation of revenue
Revenue from contracts with customers	37,374	37,923
Transferred over time | Other service
Disaggregation of revenue
Revenue from contracts with customers	962	(439)
Transferred at point in time | Equipment and product sales
Disaggregation of revenue
Revenue from contracts with customers	8,005	7,222
Array
Disaggregation of revenue
Revenue from contracts with customers	988	389
Operating lease income	51,024	26,595
Total operating revenues	52,012	26,984
Array | Transferred over time
Disaggregation of revenue
Revenue from contracts with customers	988	389
Array | Transferred over time | Residential
Disaggregation of revenue
Revenue from contracts with customers	0	0
Array | Transferred over time | Commercial
Disaggregation of revenue
Revenue from contracts with customers	0	0
Array | Transferred over time | Wholesale
Disaggregation of revenue
Revenue from contracts with customers	0	0
Array | Transferred over time | Other service
Disaggregation of revenue
Revenue from contracts with customers	988	389
Array | Transferred at point in time | Equipment and product sales
Disaggregation of revenue
Revenue from contracts with customers	0	0
TDS Telecom
Disaggregation of revenue
Revenue from contracts with customers	248,829	256,606
Operating lease income	743	754
Total operating revenues	249,572	257,360
TDS Telecom | Transferred over time
Disaggregation of revenue
Revenue from contracts with customers	248,765	256,404
TDS Telecom | Transferred over time | Residential
Disaggregation of revenue
Revenue from contracts with customers	178,596	183,847
TDS Telecom | Transferred over time | Commercial
Disaggregation of revenue
Revenue from contracts with customers	32,795	34,634
TDS Telecom | Transferred over time | Wholesale
Disaggregation of revenue
Revenue from contracts with customers	37,374	37,923
TDS Telecom | Transferred over time | Other service
Disaggregation of revenue
Revenue from contracts with customers	0	0
TDS Telecom | Transferred at point in time | Equipment and product sales
Disaggregation of revenue
Revenue from contracts with customers	64	202
All Other
Disaggregation of revenue
Revenue from contracts with customers	7,915	6,192
Operating lease income	(49)	(103)
Total operating revenues	7,866	6,089
All Other | Transferred over time
Disaggregation of revenue
Revenue from contracts with customers	(26)	(828)
All Other | Transferred over time | Residential
Disaggregation of revenue
Revenue from contracts with customers	0	0
All Other | Transferred over time | Commercial
Disaggregation of revenue
Revenue from contracts with customers	0	0
All Other | Transferred over time | Wholesale
Disaggregation of revenue
Revenue from contracts with customers	0	0
All Other | Transferred over time | Other service
Disaggregation of revenue
Revenue from contracts with customers	(26)	(828)
All Other | Transferred at point in time | Equipment and product sales
Disaggregation of revenue
Revenue from contracts with customers	$ 7,941	$ 7,020

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