XML 215 R71.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Financial Instruments - Balance Sheet (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | $ (14.1) | $ (56.5)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | (0.2) |
Foreign currency contracts [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | 0.1 | (2.3)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | 0.0 |
Commodity Contract [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | (0.2) | 0.0
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | (0.2) |
Net investment hedge contracts [Member] | Foreign currency contracts [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | 4.5 | 2.9
Net investment hedge contracts [Member] | Cross Currency Interest Rate Contract [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | 11.9 | 0.0
Net investment hedge contracts [Member] | Foreign currency denominated debt designated as a net investment hedge [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Accumulated other comprehensive income (loss), cumulative changes in net gain (loss) from hedges, before tax | (30.4) | (57.1)
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 1.9 | 0.9
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Accounts Payable and Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | 1.6 | 3.9
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Other non-current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 0.0 | 0.8
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Other non-current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | 0.1 | 0.0
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 0.0 | 0.0
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accounts Payable and Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | 0.2 | 0.0
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Contract [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 0.0 | 0.0
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Contract [Member] | Other non-current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 11.9 | 0.0
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Contract [Member] | Other non-current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | 0.0 | 0.0
Designated as Hedging Instrument [Member] | Cross Currency Interest Rate Contract [Member] | Accounts payable and accrued expenses |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | 0.0 | 0.0
Not Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 1.1 | 0.0
Not Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Accounts Payable and Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liabilities | $ 0.0 | $ 1.1

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=112277219&loc=d3e80748-113994 + Details
Name: | us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109247956&loc=SL51823488-111719 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109247956&loc=SL51823488-111719 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
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: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsPayableAndAccruedLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=bwa_AccountsPayableAndAccruedExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |