XML 41 R31.htm IDEA: XBRL DOCUMENT
v3.20.2

Financial Statement Presentation (Details) - USD ($) | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts payable |  |
Short-term Debt [Line Items] |  |
Book overdraft | $ 7,800,000 | $ 0

X
- Definition Book Overdraft + References No definition available. + Details
Name: | cog_BookOverdraft
Namespace Prefix: | cog_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |