Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,467	$ 1,632	$ 3,008	$ 3,288
Adjustments for non-ASC 606 revenue	(80)	(92)	(162)	(196)
Total Revenue from Contracts with Customers	1,387	1,540	2,846	3,092
Other Broadband
Disaggregation of Revenue [Line Items]
Total Revenue	283	326	576	660
Adjustments for non-ASC 606 revenue	(24)	(27)	(49)	(55)
Total Revenue from Contracts with Customers	259	299	527	605
Voice and Other
Disaggregation of Revenue [Line Items]
Total Revenue	150	174	306	368
Adjustments for non-ASC 606 revenue	(4)	(4)	(8)	(20)
Total Revenue from Contracts with Customers	146	170	298	348
Fiber Broadband
Disaggregation of Revenue [Line Items]
Total Revenue	122	114	243	224
Adjustments for non-ASC 606 revenue	(3)	(3)	(6)	(6)
Total Revenue from Contracts with Customers	119	111	237	218
Harvest
Disaggregation of Revenue [Line Items]
Total Revenue	276	288	543	575
Adjustments for non-ASC 606 revenue	(36)	(41)	(73)	(82)
Total Revenue from Contracts with Customers	240	247	470	493
Nurture
Disaggregation of Revenue [Line Items]
Total Revenue	94	107	199	219
Adjustments for non-ASC 606 revenue	(2)	(2)	(4)	(4)
Total Revenue from Contracts with Customers	92	105	195	215
Grow
Disaggregation of Revenue [Line Items]
Total Revenue	39	40	78	78
Adjustments for non-ASC 606 revenue	0	(3)	0	(6)
Total Revenue from Contracts with Customers	39	37	78	72
Affiliate Services
Disaggregation of Revenue [Line Items]
Total Revenue	503	583	1,063	1,164
Adjustments for non-ASC 606 revenue	(11)	(12)	(22)	(23)
Total Revenue from Contracts with Customers	$ 492	$ 571	$ 1,041	$ 1,141