| Intangible Assets - Definite Life Intangible Assets (Details) - USD ($) | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | |
| Indefinite life intangible assets: | ||||
| Amortization of intangible assets | $ 38,000,000 | $ 38,000,000 | $ 77,000,000 | $ 76,000,000 | 
| Loss on restructuring | $ 0 | |||
| Impairment of definite-lived intangible assets | $ 0 | |||
| Automatic Labs Inc | Finite-Lived Intangible Assets | ||||
| Indefinite life intangible assets: | ||||
| Loss on restructuring | 4,000,000 | |||
| Retired | ||||
| Indefinite life intangible assets: | ||||
| Intangible assets | $ 17,000,000 | $ 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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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. No definition available. 
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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