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Identifiable Intangible Assets - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization of intangible assets useful life | 9 years |  | 9 years |
Amortization of intangible assets | $ 145 | $ 165 | $ 471 | $ 576
Impairment of intangible assets excluding goodwill | $ 47 | $ 24 | $ 289 | 223
Minimum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 8.5 |  | 8.5 |
Maximum [Member] | Measurement input, discount rate [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 11 |  | 11 |
In process research and development [Member] | Minimum [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Business combination, contingent consideration, liability, measurement input | 8.5 |  | 8.5 |
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 | 10 |  | 10 |
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 |
In process research and development [Member] | Generic Pipeline Products [Member] | Development Progress And Changes In Other Key Valuation Assumptions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill | $ 29 |  | $ 83 | 37
Identifiable product rights [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill | $ 18 |  | 206 | $ 169
Identifiable product rights [Member] | Regulatory Price And Volume Of Products [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill |  |  | 94 |
Japan [Member] | Identifiable product rights [Member] | Updated Market Assumptions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment of intangible assets excluding goodwill |  |  | $ 112 |

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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 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition Value of input used to measure contingent consideration liability from business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + 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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- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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