XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.20.2

Research and Development Expenditures (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Research and Development [Abstract] |
Schedule of research and development costs | The following table presents the Company’s gross and net expenditures on R&D activities:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(in millions) | 2020 |  | 2019 |  | 2020 |  | 2019
Gross R&D expenditures | $ | 115 |  |  | $ | 123 |  |  | $ | 336 |  |  | $ | 372 |
Customer reimbursements | (15) |  |  | (21) |  |  | (39) |  |  | (53) |
Net R&D expenditures | $ | 100 |  |  | $ | 102 |  |  | $ | 297 |  |  | $ | 319 |

X
- Definition Gross And Net Expenditures On Research And Development [Table Text Block] + References No definition available. + Details
Name: | bwa_GrossAndNetExpendituresOnResearchAndDevelopmentTableTextBlock
Namespace Prefix: | bwa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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