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v3.25.1

Revenue Recognition (Disaggregation Of Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 1,495 | $ 1,446
Subsidy and other revenue | 16 | 16
Total revenue | 1,511 | 1,462
Lease revenue | 13 | 13
Revenue from contracts with customers, performance obligation | 835 |
Data And Internet Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,049 | 947
Voice Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 290 | 321
Video Services [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 74 | 94
Other [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 82 | 84
Consumer [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 813 | 787
Business And Wholesale [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 682 | $ 659

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