Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Concentration Risk [Line Items]
Long-term portion of our notes receivable, net of allowances	$ 75	$ 80
Proceeds from sale of receivables to third parties	48	50	$ 32
Restructuring charges	52	39	34
Payments for restructuring	$ 52	29	$ 27
Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag	restructuring charges
Spectrum Licenses
Concentration Risk [Line Items]
Estimated useful life	10 years
WOW
Concentration Risk [Line Items]
Carrying value of investment	$ 88	$ 87
Ownership interest percentage	50.00%	50.00%	50.00%
Customer Concentration Risk \| Accounts Receivable \| Single Government Entity
Concentration Risk [Line Items]
Accounts receivable	$ 78	$ 118
Minimum
Concentration Risk [Line Items]
Notes receivable, term	12 months
Estimated useful life	4 years
Maximum
Concentration Risk [Line Items]
Notes receivable, term	36 months
Estimated useful life	25 years

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