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v3.23.1

Revenues and Contract Costs - Additional Information (Details) | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($) segment | Mar. 31, 2022 USD ($)
Disaggregation of Revenue [Line Items] |  |
Number of reportable segments | segment | 2 |
Revenue from arrangements not accounted for under Topic 606 | $ 749,000,000 | $ 830,000,000
Amortization of deferred contract costs | 795,000,000 | 749,000,000
Contract assets impairment charge | $ 0 | $ 0
Wireless postpaid contracts |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of month-to-month contracts of total service contracts | 94.00% | 94.00%
Wireline Consumer And Business Markets And SaaS Contracts |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of month-to-month contracts of total service contracts | 92.00% | 88.00%
Minimum |  |
Disaggregation of Revenue [Line Items] |  |
Deferred contract cost, amortization period | 1 year |
Minimum | Wireless Service, Option One |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 1 month |
Minimum | Wireless Service, Option Two |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 1 month |
Minimum | Consumer |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 12 months |
Minimum | Consumer | Reseller Arrangements |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 2 years |
Maximum |  |
Disaggregation of Revenue [Line Items] |  |
Deferred contract cost, amortization period | 7 years |
Maximum | Wireless Service, Option One |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 36 months |
Maximum | Wireless Service, Option Two |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 24 months |
Maximum | Consumer |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 2 years |
Maximum | Business |  |
Disaggregation of Revenue [Line Items] |  |
Customer contracts service term | 12 months |

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
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- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131251-203054 + Details
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- Definition Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599 + Details
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- Definition Amount of revenue that is not accounted for under Topic 606. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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