| **Long-Term Debt Additional Information (Details) (USD $)**  |              |              | 0 Months Ended   | 3 Months Ended    | 0 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                  |                   | 0 Months Ended       | 3 Months Ended | 0 Months Ended   | 3 Months Ended       |                                                                                                                                                                                                                                                                                                                                                                                     | 0 Months Ended    | 3 Months Ended    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |        | 3 Months Ended    |                      |
|--------------------------------------------------------------|--------------|--------------|------------------|-------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|----------------------|----------------|------------------|----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|-------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|----------------------|
||
| **Debt Instrument**                                          |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Interest Rate, Stated Percentage            |         |         |             |              | 3.25%                                                                                                                                                                                                                                                                                                                                                                                                                                           |              |                 | 7.75%          |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Issuance Date                               |         |         |             | Nov. 15,				 2010 |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              | Oct.				03,				 2012 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              | Jul.				02,				 2013 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Maturity Date                               |         |         | May 15,				 2016 |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            | Oct. 15,				 2022 |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   | Oct. 31,				 2017 |                 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Frequency of Periodic Payment               |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   | May 15 | April 15 | November 15 | October 15 |   |   |
| 3.25% Convertible Debt, Liability Component ($)              |         |         |             | $ 94,300,000      |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Effective Interest Rate on Convertible Debt                  |         |         |             |              | 7.40%                                                                                                                                                                                                                                                                                                                                                                                                                                           |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Convertible, Terms of Conversion Feature    |         |         |             |              | Upon conversion, the Convertible Notes may be settled, at our election, in shares of our common stock, cash or a combination of cash and shares of our common stock. We have initially elected a net-settlement method to satisfy our conversion obligation, which allows us to settle the principal amount of the Convertible Notes in cash and to settle the excess conversion value in shares, as well as cash in lieu of fractional shares. |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Convertible Note Stock Price Trigger                         |         |         |             |              | $ 55.12                                                                                                                                                                                                                                                                                                                                                                                                                                         |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Convertible Note Threshold Percentage of Stock Price Trigger |         |         |             |              | 130.00%                                                                                                                                                                                                                                                                                                                                                                                                                                         |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| PDC Energy Stock Price                                       |         |         |             |              | $ 62.26                                                                                                                                                                                                                                                                                                                                                                                                                                         |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Convertible Note, If-converted Value in Excess of Principal  |         |         |             |              | 53,900,000                                                                                                                                                                                                                                                                                                                                                                                                                                      |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Line of Credit Facility, Initiation Date                     |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             | Nov.				05,				 2010 |                                                                                                                                                                                                                                                                                                                                                                                |              | Apr. 30,				 2010 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Line of Credit Facility, Maximum Borrowing Capacity ($)      |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 | 1,000,000,000                                                                                                                                                                                                                                                                                                                                                                       |              |              | 400,000,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |              |                 | 75,000,000 |   |   |   |   |   |   |   |   |
| Line of Credit Facility, Current Borrowing Capacity ($)      |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 | 450,000,000                                                                                                                                                                                                                                                                                                                                                                         |              |              | 105,000,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |              |                 |   |   |   |   |   |   |   |   |   |
| Line of Credit Facility, Expiration Date                     |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           | May 21,				 2018 |                 |                                                                                                                                                                                                                                                                                                                                                                                | Apr. 30,				 2017 |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Debt Instrument, Covenant Description                        |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 | The revolving credit facility contains covenants customary for agreements of this type, with the most restrictive being certain financial tests on a quarterly basis. The financial tests, as defined per the revolving credit facility, include requirements to: (a) maintain a minimum current ratio of 1.00 to 1.00 and (b) not exceed a maximum leverage ratio of 4.25 to 1.00. |              |              | The credit facility contains covenants customary for agreements of this type, with the most restrictive being certain financial tests that must be met on a quarterly basis. The financial tests, as defined by the credit facility, include requirements to maintain a minimum current ratio of 1.0 to 1.0, not to exceed a debt to EBITDAX ratio of 4.25 to 1.0 (declining to 4.0 to 1.0 on July 1, 2014) and to maintain a minimum interest coverage ratio of 2.5 to 1.0 |   |              |                 | The Term Loan Agreement contains financial covenants, as defined in the agreement, that must be met on a quarterly basis, including requirements to maintain a minimum current ratio of 1.0 to 1.0, not to exceed a debt to EBITDAX ratio of 4.5 to 1.0, to maintain a minimum interest coverage ratio of 2.25 to 1.0 and a present value of future net revenues to total debt ratio of 1.50 to 1.00. |   |   |   |   |   |   |   |   |
| PDC Irrevocable Standby Letter of Credit ($)                 |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   | 11,700,000 |   |   |   |   |   |   |
| Line of Credit Facility, Remaining Borrowing Capacity        |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 | 438,300,000                                                                                                                                                                                                                                                                                                                                                                         |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   |   |   |
| Weighted Average Interest Rate                               |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              | 3.40%                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 3.70%  |              |                 | 8.50% | 8.50% |   |   |   |   |   |   |   |
| Proportionate Share of PDCM Credit Facility ($)              |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              | 53,000,000                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |              |                 |   |   |   |   |   |   |   |   |   |
| PDCM second lien term loan                                   | $ 15,000,000 | $ 15,000,000 |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 | $ 30,000,000 |   |   |   |   |   |   |   |   |
| Margin on Variable Interest Rate                             |         |         |             |              |                                                                                                                                                                                                                                                                                                                                                                                                                                            |              |                 |           |             |                 |                                                                                                                                                                                                                                                                                                                                                                                |              |              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |              |                 |   |   |   |   |   |   |   | 7.00% | 6.00% |

| X                                                                                                                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying amount of the liability component of 3.25% convertible debt which may be settled in cash upon conversion.
+ References
No definition available.
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| - Definition
Proportionate share of the maximum borrowing capacity under PDCM's credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.
+ References
No definition available.
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| - Definition
The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.
+ References
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| - Definition
Price of the entity's common stock which would be required to be attained for the conversion feature embedded in the debt instrument to become effective.
+ References
No definition available.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Description of the conversion terms of a debt instrument which may include the conversion ratio (including all potential conversion ratios if contingently adjustable), type of debt or equity security into which the debt is convertible, the dollars of debt or the number of shares into which the instrument is convertible (or potentially convertible into), the conversion period, any contingencies associated with the conversion terms, and the existence and amount of a beneficial conversion feature.
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| - Definition
Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.
+ References
No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Description of the frequency of periodic payments (monthly, quarterly, annual).
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The average effective interest rate during the reporting period.
+ References
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| - Definition
Contractual interest rate for funds borrowed, under the debt agreement.
+ References
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| - Definition
Date the debt instrument was issued, in CCYY-MM-DD format.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.
+ References
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| - Definition
Weighted average interest rate of debt outstanding.
+ References
No definition available.
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| - Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.
+ References
No definition available.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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| - Definition
Date the credit facility terminates, in CCYY-MM-DD format.
+ References
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| - Definition
Date the credit facility first became available, in CCYY-MM-DD format.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5
+ Details**Name:**us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.
+ References
No definition available.
+ Details**Name:**us-gaap_LoansReceivableBasisSpreadOnVariableRate**Namespace Prefix:**us-gaap_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
+ Details**Name:**us-gaap_LongTermLoansPayable**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Price of a single share of a number of saleable stocks of a company.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258
+ Details**Name:**us-gaap_SharePrice**Namespace Prefix:**us-gaap_**Data Type:**num:perShareItemType**Balance Type:**na**Period Type:**instant |