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Financial and capital risk management - Sensitivity analysis of derivative financial instruments (Details 1) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
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Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | $ 88 | $ (83)
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 88 |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (229) |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (546) |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 88 |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 46 |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 88 |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 56 |
Brazilian Interbank Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 24 |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (28) | (50)
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (28) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (72) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (116) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (28) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (33) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (40) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (28) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (36) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (43) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Tjlp Interest Rate Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (28) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Tjlp Interest Rate Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (34) |
Long Term Interest Rate Versus U S Fixed Rate Swap [Member] | Risk Tjlp Interest Rate Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (40) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Real Depreciation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (41) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (112) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (183) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (41) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (50) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (60) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Interest Rate Increase [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (41) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (54) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (67) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Ipca Index Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (41) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Ipca Index Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (47) |
Ndice Nacional De Preos Ao Consumidor Amplo Versus U S Fixed Rate Swap Membe [Member] | Risk Ipca Index Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (53) |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 791 | 318
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 791 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (57) |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (906) |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 791 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 728 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 663 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 791 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 666 |
Brazilian Real Fixed Rate Versus U S Fixed Rate Swap [Member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 548 |
Forward contract [member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 77 | $ 82
Forward contract [member] | Risk Brazilian Real Depreciation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 77 |
Forward contract [member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (8) |
Forward contract [member] | Risk Brazilian Real Depreciation [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | (93) |
Forward contract [member] | Risk U S Interest Rate Inside Brazil Decrease [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 77 |
Forward contract [member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 73 |
Forward contract [member] | Risk U S Interest Rate Inside Brazil Decrease [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 68 |
Forward contract [member] | Risk Brazilian Interest Rate Increase [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 77 |
Forward contract [member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | 68 |
Forward contract [member] | Risk Brazilian Interest Rate Increase [Member] | Sensitivity Scenario Ii [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Fair value of liabilities | $ 60 |

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