XML 65 R43.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Contingencies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Change of Outstanding Asbestos-related Claims [Table Text Block] |
| 2017 |  | 2016
Beginning Claims January 1 | 9,385 |  |  | 10,061 |
New Claims Received | 2,116 |  |  | 2,078 |
Dismissed Claims | (1,866 | ) |  | (2,402 | )
Settled Claims | (410 | ) |  | (352 | )
Ending Claims December 31 | 9,225 |  |  | 9,385 |
Schedule of Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] |
(millions of dollars) | 2017 |  | 2016
Beginning Asbestos Liability as of January 1 | $ | 879.3 |  |  | $ | 969.8 |
Actuarial revaluation | — |  |  | (45.5 | )
Indemnity and Defense Related Costs | (51.1 | ) |  | (45.0 | )
Ending Asbestos Liability as of December 31 | $ | 828.2 |  |  | $ | 879.3 |
Schedule Of Liability For Unpaid Claims And Claims Adjustment Expenses [Table Text Block] |
| December 31,
(millions of dollars) | 2017 |  | 2016
Assets: |  |  |  |  |
Non-current assets | $ | 386.4 |  |  | $ | 386.4 |
Total insurance assets | $ | 386.4 |  |  | $ | 386.4 |
Liabilities: |  |  |  |  |
Accounts payable and accrued expenses | $ | 52.5 |  |  | $ | 51.7 |
Other non-current liabilities | 775.7 |  |  | 827.6 |
Total accrued liabilities | $ | 828.2 |  |  | $ | 879.3 |

X
- Definition Change of Outstanding Asbestos-related Claims [Table Text Block] + References No definition available. + Details
Name: | bwa_ChangeofOutstandingAsbestosrelatedClaimsTableTextBlock
Namespace Prefix: | bwa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reasons for the change in incurred claims and claim adjustment expenses recognized in the income statement attributable to insured events of prior fiscal years. Also includes disclosures of additional premiums or return premiums accrued as a result of changes in incurred claims and claim adjustment expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.W) -URI http://asc.fasb.org/extlink&oid=27015833&loc=d3e570705-122907 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 + Details
Name: | us-gaap_ScheduleOfCausesOfIncreaseDecreaseInLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 + Details
Name: | us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration