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Intangible Assets - Definite Life Intangible Assets (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Oct. 16, 2020 | Jun. 16, 2020
Definite life intangible assets: |  |  |  |  |
Impairment of definite-lived intangible assets | $ 0 | $ 0 | $ 0 |  |
Amortization of intangible assets | 152,000,000 | 141,000,000 | 23,000,000 |  |
Loss on restructuring | 24,000,000 | $ 0 | 0 |  |
Relationship |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Amortization of intangible assets | 6,000,000 |  |  |  |
Trademarks |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Amortization of intangible assets | 3,000,000 |  |  |  |
Talent and Content Contract |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Amortization of intangible assets |  |  | $ 29,000,000 |  |
Simplecast |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Intangible assets |  |  |  |  | $ 12,000,000
Stitcher |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Intangible assets |  |  |  | $ 38,000,000 | $ 38,000,000
Automatic Labs Inc. | Finite-Lived Intangible Assets |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Loss on restructuring | 4,000,000 |  |  |  |
Retired |  |  |  |  |
Definite life intangible assets: |  |  |  |  |
Intangible assets | $ 17,000,000 |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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