Debt, Difference Between Fair Value And Carrying Value

No definition available.

Name:	bwa_DebtDifferenceBetweenFairValueAndCarryingValue
Namespace Prefix:	bwa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum Line Of Credit Potential Additional Increase

+ References

No definition available.

+ Details

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Namespace Prefix:	bwa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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-Subparagraph (SX 210.5-02.19(b),22(b))
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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-Topic 235
-SubTopic 10
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-Subparagraph (SX 210.4-08(f))
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+ Details

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Balance Type:	na
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=bwa_ShortTermBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=bwa_EuroInterbankOfferedRateMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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NOTES PAYABLE AND DEBT - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
NOTES PAYABLE AND DEBT - Narrative (Details) - USD ($)	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Oct. 01, 2020	Mar. 13, 2020
Line of Credit Facility
Cash consideration paid on debt extinguishment	$ 430,000,000
Gain on debt extinguishment		$ 28,000,000	$ 0	$ 28,000,000	$ 0
Unamortized Premium and debt issuance costs	20,000,000	20,000,000		20,000,000
Potential additional increase to credit facility	2,000,000,000	2,000,000,000		2,000,000,000
Estimated fair value of senior unsecured notes	3,099,000,000	3,099,000,000		3,099,000,000		$ 3,530,000,000
Debt, difference between fair value and carrying value	(515,000,000)	(515,000,000)		(515,000,000)		(567,000,000)
Letters of credit outstanding, amount	35,000,000	35,000,000		35,000,000		31,000,000
Senior notes
Line of Credit Facility
Extinguishment of debt, amount	438,000,000
Short Term Borrowings
Line of Credit Facility
Short-term borrowings	60,000,000	60,000,000		$ 60,000,000		58,000,000
Short Term Borrowings \| Euribor
Line of Credit Facility
Basis spread on variable rate				1.75%
Revolving Credit Facility
Line of Credit Facility
Maximum borrowing capacity							$ 2,000,000,000
Potential additional increase to credit facility								$ 1,000,000,000
Line of credit outstanding	0	0		$ 0		0
Commercial Paper
Line of Credit Facility
Current borrowing capacity	2,000,000,000	2,000,000,000		2,000,000,000
Short-term, Unsecured Commercial Paper Notes
Line of Credit Facility
Line of credit outstanding	0	$ 0		$ 0		$ 0
3.375% Senior notes due 03/15/25 ($500 million par value) \| Senior notes
Line of Credit Facility
Extinguishment of debt, amount	$ 115,000,000
Debt instrument stated interest rate	3.375%	3.375%		3.375%
5.000% Senior notes due 10/01/25 ($800 million par value) \| Senior notes
Line of Credit Facility
Extinguishment of debt, amount	$ 323,000,000
Debt instrument stated interest rate	5.00%	5.00%		5.00%
Cash Settlement \| Senior notes
Line of Credit Facility
Gain on debt extinguishment		$ (8,000,000)