XML 368 R165.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Borrowings and other financial liabilities - Summary of detailed information about borrowings (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of detailed information about borrowings [Line Items] |  |
Non-current borrowing | $ 12,440 | $ 14,624
Current borrowings including overdrafts | 312 | 552
Total borrowings | $ 12,752 | $ 15,176
Rio Tinto Finance plc Euro Bonds 2.0% due 2020 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 2.00% | 2.00%
Borrowing maturity | 2020 | 2020
Non-current borrowing | $ 468 | $ 921
Total borrowings | $ 468 | $ 921
Rio Tinto Finance (USA) Limited Bonds 4.125% 2021 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 4.125% | 4.125%
Borrowing maturity | 2021 | 2021
Non-current borrowing |  | $ 428
Total borrowings |  | $ 428
Rio Tinto Finance (USA) Limited Bonds 3.750% 2021 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.75% | 3.75%
Borrowing maturity | 2021 | 2021
Non-current borrowing |  | $ 347
Total borrowings |  | $ 347
Rio Tinto Finance (USA) plc Bonds 3.5% 2022 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.50% | 3.50%
Borrowing maturity | 2022 | 2022
Non-current borrowing |  | $ 227
Total borrowings |  | $ 227
Rio Tinto Finance (USA) plc Bonds 2.875% 2022 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 2.875% | 2.875%
Borrowing maturity | 2022 | 2022
Non-current borrowing |  | $ 377
Total borrowings |  | $ 377
Rio Tinto Finance plc Euro Bonds 2.875% due 2024 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 2.875% | 2.875%
Borrowing maturity | 2024 | 2024
Non-current borrowing | $ 514 | $ 644
Total borrowings | $ 514 | $ 644
Rio Tinto Finance (USA) Limited Bonds 3.75% 2025 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.75% | 3.75%
Borrowing maturity | 2025 | 2025
Non-current borrowing | $ 1,170 | $ 1,192
Total borrowings | $ 1,170 | $ 1,192
Rio Tinto Finance (USA) Limited Bonds 7.125% 2028 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 7.125% | 7.125%
Borrowing maturity | 2028 | 2028
Non-current borrowing | $ 927 | $ 965
Total borrowings | $ 927 | $ 965
Alcan Inc. Debentures 7.25% due 2028 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 7.25% | 7.25%
Borrowing maturity | 2028 | 2028
Non-current borrowing | $ 104 | $ 105
Total borrowings | $ 104 | $ 105
Rio Tinto Finance plc Sterling Bonds 4.0% due 2029 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 4.00% | 4.00%
Borrowing maturity | 2029 | 2029
Non-current borrowing | $ 633 | $ 669
Total borrowings | $ 633 | $ 669
Alcan Inc. Debentures 7.25% due 2031 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 7.25% | 7.25%
Borrowing maturity | 2031 | 2031
Non-current borrowing | $ 421 | $ 422
Total borrowings | $ 421 | $ 422
Alcan Inc. Global Notes 6.125% due 2033 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 6.125% | 6.125%
Borrowing maturity | 2033 | 2033
Non-current borrowing | $ 741 | $ 740
Total borrowings | $ 741 | $ 740
Alcan Inc. Global Notes 5.75% due 2035 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 5.75% | 5.75%
Borrowing maturity | 2035 | 2035
Non-current borrowing | $ 288 | $ 287
Total borrowings | $ 288 | $ 287
Rio Tinto Finance (USA) Limited Bonds 5.2% 2040 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 5.20% | 5.20%
Borrowing maturity | 2040 | 2040
Non-current borrowing | $ 1,095 | $ 1,102
Total borrowings | $ 1,095 | $ 1,102
Rio Tinto Finance (USA) plc Bonds 4.75% 2042 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 4.75% | 4.75%
Borrowing maturity | 2042 | 2042
Non-current borrowing | $ 462 | $ 467
Total borrowings | $ 462 | $ 467
Oyu Tolgoi LLC MIGA Insured Loan LIBOR plus 2.65% due 2027 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 2.65% | 2.65%
Borrowing maturity | 2027 | 2027
Non-current borrowing | $ 676 | $ 674
Total borrowings | $ 676 | $ 674
Rio Tinto Finance (USA) plc Bonds 4.125% 2042 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 4.125% | 4.125%
Borrowing maturity | 2042 | 2042
Non-current borrowing | $ 685 | $ 691
Total borrowings | $ 685 | $ 691
Oyu Tolgoi LLC Commercial Banks "B Loan" LIBOR plus 3.4% due 2027 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.40% | 3.40%
Borrowing maturity | 2027 | 2027
Non-current borrowing | $ 1,588 | $ 1,588
Total borrowings | $ 1,588 | $ 1,588
Oyu Tolgoi LLC Export Credit Agencies Loan 2.3% due 2028 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 2.30% | 2.30%
Borrowing maturity | 2028 | 2028
Non-current borrowing | $ 272 | $ 255
Total borrowings | $ 272 | $ 255
Oyu Tolgoi LLC Export Credit Agencies Loan LIBOR plus 3.65% due 2029 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.65% | 3.65%
Borrowing maturity | 2029 | 2029
Non-current borrowing | $ 871 | $ 869
Total borrowings | $ 871 | $ 869
Oyu Tolgoi LLC International Financial Instritutions "A Loan" LIBOR plus 3.78% due 2030 [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Borrowings, interest rate | 3.78% | 3.78%
Borrowing maturity | 2030 | 2030
Non-current borrowing | $ 768 | $ 761
Total borrowings | 768 | 761
Loans from equity accounted units [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Current borrowings including overdrafts |  | 31
Total borrowings |  | 31
Other secured loans [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Non-current borrowing | 345 | 451
Current borrowings including overdrafts | 42 | 79
Total borrowings | 387 | 530
Other unsecured loans [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Non-current borrowing | 373 | 393
Current borrowings including overdrafts | 264 | 435
Total borrowings | 637 | 828
Finance leases [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Non-current borrowing | 39 | 49
Current borrowings including overdrafts | 5 | 4
Total borrowings | 44 | 53
Bank overdrafts [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Current borrowings including overdrafts | 1 | 3
Total borrowings | $ 1 | $ 3

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_7&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_BorrowingsInterestRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_7&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_BorrowingsMaturity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_LongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_ShorttermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinancePlcEuroBondsTwoPointZeroPercentageDueTwoThousandAndTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSALimitedBondsFourPointOneTwoFivePercentageTwothousandAndTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSALimitedBondsThreePointSevenFiveZeroPercentageTwoThousandAndTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSAPlcBondsThreePointFivePercentageTwoThousandAndTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSAPlcBondsTwoPointEightSevenFivePercentageTwoThousandAndTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinancePlcEuroBondsTwoPointEightSevenFivePercentageDueTwoThousandAndTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUsaLimitedBondsThreePointSevenFivePercentageTwoThousandAndTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSALimitedBondsSevenPointOneTwoFivePercentageTwoThousandAndTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_AlcanIncDebenturesSevenPointTwoFivePercentageDueTwoThousandAndTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinancePlcSterlingBondsFourPointZeroPercentageDueTwoThousandAndTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_AlcanIncDebenturesSevenPointTwoFivePercentageDueTwoThousandAndThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_AlcanIncGlobalNotesSixPointOneTwoFiveDueTwoThousandAndThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_AlcanIncGlobalNotesFivePointSevenFivePercentagesDueTwoThousandAndThirtyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSALimitedBondsFivePointTwoPercentageTwoThousandAndFortyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUsaPlcBondsFourPointSevenFivePercentageTwoThousandAndFortyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OyuTolgoiLLCMIGAInsuredLoanLIBORPlusTwoPointSixFivePercentageDueTwoThousandAndTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_RioTintoFinanceUSAPlcBondsFourPointOneTwoFiveTwoThousandAndFortyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OyuTolgoiLLCCommercialBanksBLoanLIBORPlusThreePointFourPercentageDueTwoThousandAndTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OyuTolgoiLLCExportCreditAgenciesLoanTwoPointThreePercentageDueTwoThousandAndTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OyuTolgoiLLCExportCreditAgenciesLoanLIBORPlusThreePointSixFivePercentageDueTwoThousandAndTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OyuTolgoiLLCInternationalFinancialInstitutionsALoanLIBORPlusThreePointSevenEightPercentageDueTwoThousandAndThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_LoansFromEquityAccountedUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OtherSecuredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_OtherUnsecuredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=ifrs-full_LeaseReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=rio_BankOverdraftMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |