Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,450	$ 1,618	$ 4,458	$ 4,906
Adjustments for non-ASC 606 revenue	(79)	(90)	(241)	(286)
Total Revenue from Contracts with Customers	1,371	1,528	4,217	4,620
Other Broadband
Disaggregation of Revenue [Line Items]
Total Revenue	271	315	847	975
Adjustments for non-ASC 606 revenue	(23)	(27)	(72)	(82)
Total Revenue from Contracts with Customers	248	288	775	893
Voice and Other
Disaggregation of Revenue [Line Items]
Total Revenue	145	164	451	532
Adjustments for non-ASC 606 revenue	(4)	(4)	(12)	(24)
Total Revenue from Contracts with Customers	141	160	439	508
Fiber Broadband
Disaggregation of Revenue [Line Items]
Total Revenue	119	118	362	342
Adjustments for non-ASC 606 revenue	(3)	(3)	(9)	(9)
Total Revenue from Contracts with Customers	116	115	353	333
Harvest
Disaggregation of Revenue [Line Items]
Total Revenue	261	283	804	858
Adjustments for non-ASC 606 revenue	(36)	(41)	(109)	(123)
Total Revenue from Contracts with Customers	225	242	695	735
Nurture
Disaggregation of Revenue [Line Items]
Total Revenue	96	104	295	323
Adjustments for non-ASC 606 revenue	(2)	(2)	(6)	(6)
Total Revenue from Contracts with Customers	94	102	289	317
Grow
Disaggregation of Revenue [Line Items]
Total Revenue	32	40	110	118
Adjustments for non-ASC 606 revenue	0	(2)	0	(8)
Total Revenue from Contracts with Customers	32	38	110	110
Affiliate Services
Disaggregation of Revenue [Line Items]
Total Revenue	526	594	1,589	1,758
Adjustments for non-ASC 606 revenue	(11)	(11)	(33)	(34)
Total Revenue from Contracts with Customers	$ 515	$ 583	$ 1,556	$ 1,724