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Cash and cash equivalents (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Cash | $ 231 | $ 299
Total short-term financial investments | 16,056 | 10,168
Total cash and cash equivalents | 16,287 | 10,467
BRAZIL |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 6,277 | 2,114
Foreign countries [member] |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 9,779 | 8,054
Automatic investing accounts and interest checking accounts [member] | BRAZIL |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 6,072 | 1,951
Automatic investing accounts and interest checking accounts [member] | Foreign countries [member] |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 3,555 | 3,732
Other Investment Funds [Member] | BRAZIL |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 205 | 163
Time Deposits [Member] | Foreign countries [member] |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | 6,195 | 4,310
Other Financial Investments [Member] | Foreign countries [member] |  |
DisclosureCashAndCashEquivalentsAndMarketableSecuritiesLineItems [Line Items] |  |
Short-term financial investments | $ 29 | $ 12

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2021-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_45&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_i&doctype=Standard -URIDate 2021-03-24 + Details
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