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Identifiable Intangible Assets - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization of intangible assets useful life |  |  | 10 years |
Amortization of intangible assets | $ 212 | $ 173 | $ 412 | $ 414
Impairment of intangible assets excluding goodwill | $ 51 | 195 | $ 199 | 274
Minimum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 8.3 |  | 8.3 |
Maximum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 11.2 |  | 11.2 |
Generic Pipeline Products [Member] | In Process Research And Development To Product Rights [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill | $ 19 | 27 | $ 21 | 78
In Process Research and Development [Member] | Minimum [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 0.0725 |  | 0.0725 |
In Process Research and Development [Member] | Minimum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 20 |  | 20 |
In Process Research and Development [Member] | Maximum [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 0.0825 |  | 0.0825 |
In Process Research and Development [Member] | Maximum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 90 |  | 90 |
Identifiable product rights [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill | $ 32 | 168 | $ 161 | 196
Actavis [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill |  | 30 |  | 30
Actavis [Member] | In Process Research and Development [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination recognized identifiable assets | $ 503 |  | $ 503 |
United States [Member] | Actavis [Member] | Identifiable product rights [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill |  | $ 138 |  | $ 166

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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 https://asc.fasb.org/extlink&oid=126954810&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 https://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 https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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