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Financial instruments - additional disclosures (Details 2) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | $ 43,022 | $ 32,623
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Current financial debt [member] | Interest bearning accounts of associates payable on demand [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,085 | 1,836
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Current financial debt [member] | Bank and other financial debt [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 976 | 719
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Current financial debt [member] | Commercial paper [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 4,258 | 2,289
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Non-current financial debt [member] | Straight bonds [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 28,298 | 22,167
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Non-current financial debt [member] | Liabilities to banks and other financial institutions [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 233 | 188
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Trade payables [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 5,403 | 5,424
Financial liabilities at amortised cost, class [member] | Financial liabilities at amortised cost, category [member] | Commitment for repurchase of own shares [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 1,769 |
Financial liabilities at amortised cost, class [member] | Other financial liabilities, category [member] | Lease liabilities [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,005 | 1,949
Financial liabilities at amortised cost, class [member] | Other financial liabilities, category [member] | Other financial liabilities [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,005 | 1,949
Financial liabilities at fair value, class [member] | Financial liabilities at fair value through profit or loss, category [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 1,263 | 1,250
Financial liabilities at fair value, class [member] | Financial liabilities at fair value through profit or loss, category [member] | Contingent consideration and other financial liabilities [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 1,069 | 1,065
Financial liabilities at fair value, class [member] | Financial liabilities at fair value through profit or loss, category [member] | Derivative financial instruments [member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | $ 194 | $ 185

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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_25&doctype=Standard -URIDate 2019-03-27 + Details
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