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Revenue Recognition - Disaggregation Of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 5,033 | $ 5,293 | $ 5,220
Out-of-period adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Immaterial error correction | UScellular recorded an adjustment to correct a prior period error related to the recognition of discounts for certain Prepaid customers, which decreased Service revenue by $5 million in 2023. This adjustment was not material to any of the periods impacted. |  | UScellular recorded an adjustment to correct a prior period error related to the timing of recognition of regulatory fee billings which increased Service revenue by $9 million in 2021. This adjustment was not material to any of the periods impacted.
Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 4,042 | 4,120 | $ 4,107
Transferred over time | Retail service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,742 | 2,793 | 2,757
Transferred over time | Inbound roaming |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 32 | 67 | 110
Transferred over time | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 700 | 669 | 641
Transferred over time | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 155 | 173 | 183
Transferred over time | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 169 | 173 | 178
Transferred over time | Other service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 244 | 245 | 238
Transferred at point in time | Equipment and product sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 991 | 1,173 | 1,113
UScellular |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,805 | 4,076 | 4,039
UScellular | Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,943 | 3,032 | 3,032
UScellular | Transferred over time | Retail service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,742 | 2,793 | 2,757
UScellular | Transferred over time | Retail service | Prior period reclassification |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers |  |  | (8)
UScellular | Transferred over time | Retail service | Out-of-period adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | (5) |  | 9
UScellular | Transferred over time | Inbound roaming |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 32 | 67 | 110
UScellular | Transferred over time | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
UScellular | Transferred over time | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
UScellular | Transferred over time | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
UScellular | Transferred over time | Other service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 169 | 172 | 165
UScellular | Transferred over time | Other service | Prior period reclassification |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers |  |  | 8
UScellular | Transferred at point in time | Equipment and product sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 862 | 1,044 | 1,007
TDS Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,025 | 1,016 | 1,003
TDS Telecom | Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,024 | 1,015 | 1,002
TDS Telecom | Transferred over time | Retail service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
TDS Telecom | Transferred over time | Inbound roaming |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
TDS Telecom | Transferred over time | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 700 | 669 | 641
TDS Telecom | Transferred over time | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 155 | 173 | 183
TDS Telecom | Transferred over time | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 169 | 173 | 178
TDS Telecom | Transferred over time | Other service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
TDS Telecom | Transferred at point in time | Equipment and product sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1 | 1 | 1
Corporate, Eliminations and Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 203 | 201 | 178
Corporate, Eliminations and Other | Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 75 | 73 | 73
Corporate, Eliminations and Other | Transferred over time | Retail service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Corporate, Eliminations and Other | Transferred over time | Inbound roaming |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Corporate, Eliminations and Other | Transferred over time | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Corporate, Eliminations and Other | Transferred over time | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Corporate, Eliminations and Other | Transferred over time | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 0 | 0 | 0
Corporate, Eliminations and Other | Transferred over time | Other service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 75 | 73 | 73
Corporate, Eliminations and Other | Transferred at point in time | Equipment and product sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 128 | $ 128 | $ 105

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