v3.25.4

FINANCIAL INSTRUMENTS - Schedule of Cross-Currency Swap Contract (Details) € in Millions, ¥ in Millions, $ in Millions | Dec. 31, 2025 EUR (€) | Dec. 31, 2025 USD ($) | Dec. 31, 2025 JPY (¥) | Dec. 31, 2024 EUR (€) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 JPY (¥) | Apr. 30, 2024 USD ($)
--- | --- | --- | --- | --- | --- | --- | ---
U.S. Dollar |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | $ 10 |  |  |  |  |
Cross-currency swaps | Maturity Period July 2028 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 500 |  |  |  |  |
Cross-currency swaps | Maturity Period August 2030 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 200 |  |  |  |  |
Cross-currency swaps | Maturity Period March 2029 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 700 |  |  |  |  | $ 500
Cross-currency swaps | U.S. Dollar | Maturity Period July 2027 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 400 |  |  | $ 1,100 |  |
Cross-currency swaps | U.S. Dollar | Maturity Period July 2028 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 500 |  |  | 500 |  |
Cross-currency swaps | U.S. Dollar | Maturity Period August 2030 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 500 |  |  | 0 |  |
Cross-currency swaps | U.S. Dollar | Maturity Period March 2029 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | 200 |  |  | 0 |  |
Cross-currency swaps | U.S. Dollar | Maturity Period Feb 2029 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount |  | $ 100 |  |  | $ 100 |  |
Cross-currency swaps | Euro | Maturity Period July 2027 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount | € | € 355 |  |  | € 976 |  |  |
Cross-currency swaps | Euro | Maturity Period July 2028 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount | € | 470 |  |  | 470 |  |  |
Cross-currency swaps | Euro | Maturity Period August 2030 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount | € | 450 |  |  | 0 |  |  |
Cross-currency swaps | Euro | Maturity Period March 2029 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount | € | € 179 |  |  | € 0 |  |  |
Cross-currency swaps | Chinese Renminbi | Maturity Period Feb 2029 |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |
Derivative, notional amount | ¥ |  |  | ¥ 12,724 |  |  | ¥ 12,724 |

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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_CurrencyAxis=currency_USD
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: | bwa_ScheduleOfMaturityPeriodAxis=bwa_MaturityPeriodJuly2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bwa_ScheduleOfMaturityPeriodAxis=bwa_MaturityPeriodAugust2030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bwa_ScheduleOfMaturityPeriodAxis=bwa_MaturityPeriodMarch2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bwa_ScheduleOfMaturityPeriodAxis=bwa_MaturityPeriodJuly2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bwa_ScheduleOfMaturityPeriodAxis=bwa_MaturityPeriodFeb2029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_EUR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_CNY
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |