Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 5,508	$ 5,915	$ 6,449
Adjustments for Non-ASC 606 Revenue	(285)	(315)	(373)
Total Revenue from Contracts with Customers	5,223	5,600	6,076
Goods and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total Revenue from Contracts with Customers	13	23	28
Services performed over time
Disaggregation of Revenue [Line Items]
Total Revenue from Contracts with Customers	5,210	5,577	6,048
Other Broadband
Disaggregation of Revenue [Line Items]
Total operating revenue	932	1,111	1,275
Adjustments for Non-ASC 606 Revenue	(79)	(95)	(106)
Total Revenue from Contracts with Customers	853	1,016	1,169
Voice and Other
Disaggregation of Revenue [Line Items]
Total operating revenue	521	589	691
Adjustments for Non-ASC 606 Revenue	(14)	(16)	(31)
Total Revenue from Contracts with Customers	507	573	660
Fiber Broadband
Disaggregation of Revenue [Line Items]
Total operating revenue	377	473	462
Adjustments for Non-ASC 606 Revenue	(12)	(12)	(12)
Total Revenue from Contracts with Customers	365	461	450
Harvest
Disaggregation of Revenue [Line Items]
Total operating revenue	939	1,047	1,134
Adjustments for Non-ASC 606 Revenue	(118)	(139)	(161)
Total Revenue from Contracts with Customers	821	908	973
Nuture
Disaggregation of Revenue [Line Items]
Total operating revenue	357	393	435
Adjustments for Non-ASC 606 Revenue	(8)	(8)	(9)
Total Revenue from Contracts with Customers	349	385	426
Grow
Disaggregation of Revenue [Line Items]
Total operating revenue	133	143	158
Adjustments for Non-ASC 606 Revenue	(6)	0	(9)
Total Revenue from Contracts with Customers	127	143	149
Affiliate Services
Disaggregation of Revenue [Line Items]
Total operating revenue	2,249	2,159	2,294
Adjustments for Non-ASC 606 Revenue	(48)	(45)	(45)
Total Revenue from Contracts with Customers	$ 2,201	$ 2,114	$ 2,249