XML 74 R62.htm IDEA: XBRL DOCUMENT
v3.20.2

Financial Instruments - AOCI (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Derivatives, Fair Value |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | $ 20 | $ 4
Gain (loss) expected to be reclassified to income in one year or less | (1) |
Foreign currency |  |
Derivatives, Fair Value |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | (1) | 0
Gain (loss) expected to be reclassified to income in one year or less | (1) |
Foreign currency | Net investment hedge |  |
Derivatives, Fair Value |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | 6 | 5
Gain (loss) expected to be reclassified to income in one year or less | 0 |
Cross-currency swaps | Net investment hedge |  |
Derivatives, Fair Value |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | 34 | 16
Gain (loss) expected to be reclassified to income in one year or less | 0 |
Foreign currency-denominated debt | Net investment hedge |  |
Derivatives, Fair Value |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | (19) | $ (17)
Gain (loss) expected to be reclassified to income in one year or less | $ 0 |

X
- Definition Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax + References No definition available. + Details
Name: | bwa_Accumulatedothercomprehensiveincomelosscumulativechangesinnetgainlossfromhedgesbeforetax
Namespace Prefix: | bwa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
Name: | us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CrossCurrencyInterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=bwa_ForeigncurrencydenominateddebtdesignatedasanetinvestmenthedgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |