v3.20.4

Fair Value Measurements And Disclosure (Narrative) (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
May 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 EUR (€) | Dec. 31, 2019 USD ($)
Fair Value Disclosures [Abstract] |  |  |  |
Available-for-sale debt securities |  | $ 1,479,000,000 |  | $ 1,444,000,000
Available-for-sale debt securities - maturities less than 1 year |  | 29,000,000 |  |
Available-for-sale debt securities - maturities within 1 to 3 years |  | 159,000,000 |  |
Available-for-sale debt securities - maturities within 3 to 5 years |  | 179,000,000 |  |
Available-for-sale debt securities - maturities for 5 or more years |  | 1,112,000,000 |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Anticipated reclassification of holding losses during the next 12 months - cash flow hedges |  | 92,000,000 |  |
Aggregate principal amount of debt |  | 32,241,000,000 |  |
Net losses on net investment hedges recognized in accumulated OCI |  | 147,000,000 |  |
Collateral submitted to counterparty |  | 53,000,000 |  | 204,000,000
Collateral received from counterparty |  | 694,000,000 |  | 44,000,000
Collateral contingently payable to the counterparty |  | 33,000,000 |  |
Nonrecurring Fair Value Measurements |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Nonrecurring fair value measurements |  |  |  | $ 0
Communications | Video | Nonrecurring Fair Value Measurements |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Nonrecurring fair value measurements |  | 9,744,000,000 |  |
Property, plant, and equipment, fair value measurements |  | 2,258,000,000 |  |
Communications | Video | Nonrecurring Fair Value Measurements | Orbital slots |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Finite-lived intangible assets, fair value measurements |  | 5,873,000,000 |  |
Communications | Video | Nonrecurring Fair Value Measurements | Customer lists |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Finite-lived intangible assets, fair value measurements |  | 1,613,000,000 |  |
WarnerMedia | Warner Bros. | Nonrecurring Fair Value Measurements |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Film costs, fair value measurements |  | 844,000,000 |  |
Measurement Input, Entity Credit Risk |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Collateral contingently payable to the counterparty |  | 676,000,000 |  |
Measurement Input, Entity Credit Risk | Communications | DirecTV |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Collateral contingently payable to the counterparty |  | $ 134,000,000 |  |
Net Investment Hedging |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Aggregate principal amount of debt | € |  |  | € 1,450,000,000 |
Interest rate locks | Cash Flow Hedging |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |
Payment for hedge | $ 731,000,000 |  |  |

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- Definition This item represents the fair value of debt securities which are expected to mature more than fourth calendar years after the current calendar year and which are categorized neither as held-to-maturity nor trading securities. This item also includes debt securities, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature more than fourth calendar years after the current calendar year and which are categorized as held-to-maturity. + References No definition available. + Details
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- Definition This item represents the fair value of debt securities which are expected to mature over the next two calendar years after the current calendar years and which are categorized neither as held-to-maturity nor trading securities. This item also includes debt securities, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature over the next two calendar years after the current calendar year and which are categorized as held-to-maturity. + References No definition available. + Details
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- Definition This item represents the fair value of debt securities which are expected to mature over the third and fourth calendar years after the current calendar year and which are categorized neither as held-to-maturity nor trading securities. This item also includes debt securities, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are expected to mature over the third and fourth calendar years after the current calendar year and which are categorized as held-to-maturity. + References No definition available. + Details
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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27198-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226006-175313 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
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- Definition The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3581-108585 + Details
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- Definition Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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