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Derivative instruments and hedging activities - Summary Of Pre-tax (gains) losses from Derivatives Designated in Cash Flow Hedging Relationships (Detail) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Disclosure In Tabular Form Of Pretax Gain Loss Cash Flow Hedging Instruments [Line Items] |  |  |  |  |
Other comprehensive income (loss) |  | $ (249) | $ (395) | $ (156) | $ (663)
Cross Currency Swap Cash Flow Hedge [Member] |  |  |  |  |
Disclosure In Tabular Form Of Pretax Gain Loss Cash Flow Hedging Instruments [Line Items] |  |  |  |  |
Other comprehensive income (loss) | [1] | 1 | 0 | (4) | 0
Financial Expenses Net [Member] |  |  |  |  |
Disclosure In Tabular Form Of Pretax Gain Loss Cash Flow Hedging Instruments [Line Items] |  |  |  |  |
Financial expenses, net |  | 280 | 252 | 808 | 721
Financial Expenses Net [Member] | Cross Currency Swap Cash Flow Hedge [Member] |  |  |  |  |
Disclosure In Tabular Form Of Pretax Gain Loss Cash Flow Hedging Instruments [Line Items] |  |  |  |  |
Financial expenses, net | [1] | $ (7) | $ 0 | $ (22) | $ 0
[1] | On March 31, 2023, Teva entered into a cross-currency interest rate swap agreement, designated as cash flow hedge for accounting purposes with respect to an intercompany loan due October 2026, denominated in Japanese yen.

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- Definition Disclosure In Tabular Form Of Pretax Gain Loss Cash Flow Hedging Instruments + References No definition available. + Details
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- Definition Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness, attributable to parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 + Details
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- Definition Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C + Details
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