XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.20.2

Capitalized Exploratory Well Costs (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Extractive Industries [Abstract] |
Summary of changes in capitalized well costs | A summary of the changes in our capitalized well costs for the Current Period is detailed below.
|  | Nine Months Ended September 30, 2020
|  | ($ in millions)
Balance as of January 1 |  | $ | 7 |
Charges to exploration expense |  | (7 | )
Balance as of September 30 |  | $ | — |

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

X
- Definition Tabular disclosure of the change in capitalized exploratory costs during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447 + Details
Name: | us-gaap_CapitalizedExploratoryWellCostsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration