Additional Balance Sheet Details (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued exploration and development costs	$ 90,939	$ 100,564
Accounts payable	64,604us-gaap_AccountsPayableCurrent	63,263us-gaap_AccountsPayableCurrent
Accrued compensation	62,513	55,043
Accrued lease operating expenses	56,798dnr_AccruedLeaseOperatingExpense	59,762dnr_AccruedLeaseOperatingExpense
Accrued interest	48,255us-gaap_InterestPayableCurrent	68,871us-gaap_InterestPayableCurrent
Taxes payable	39,816us-gaap_TaxesPayableCurrent	28,019us-gaap_TaxesPayableCurrent
Other	31,833us-gaap_OtherAccruedLiabilitiesCurrent	35,021us-gaap_OtherAccruedLiabilitiesCurrent
Total	$ 394,758	$ 410,543

Accrued exploration and development costs Current.

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- Definition

Accrued Lease Operating Expense

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- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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