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Revenue Recognition - Disaggregation Of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 4,076 | $ 4,039 | $ 3,960
Out-of-period adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Immaterial error correction |  | During the third quarter of 2021, UScellular recorded a $9 million out-of-period error related to the timing of recognition of regulatory fee billings. This adjustment had the impact of increasing Service revenue by $9 million in 2021. UScellular determined that this adjustment was not material to any of the periods impacted. |
Transferred over time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,032 | $ 3,032 | 2,990
Transferred over time | Retail service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,793 | 2,757 | 2,681
Transferred over time | Retail service | Out-of-period adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers |  | 9 |
Transferred over time | Retail service | Revision of Prior Period, Reclassification, Adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers |  | (8) | (5)
Transferred over time | Inbound roaming |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 67 | 110 | 152
Transferred over time | Other service |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 172 | 165 | 157
Transferred over time | Other service | Revision of Prior Period, Reclassification, Adjustment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers |  | 8 | 5
Transferred at point in time | Equipment sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 1,044 | $ 1,007 | $ 970

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- Definition Describes nature and related effect on financial statements related to corrections of prior year errors in the current year financial statements when the effect of the prior year error was immaterial to the prior year financial statements and the current year correction is immaterial to the current year financial statements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 1.M.1) -URI https://asc.fasb.org/extlink&oid=122038215&loc=d3e30365-122693 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 1.N.Q2) -URI https://asc.fasb.org/extlink&oid=122038215&loc=d3e30840-122693 + Details
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