Collateralized Long term Debt, Percent of Reserve Value of Oil and Natural Gas Properties

No definition available.

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- Definition

Debt Instrument, Convertible Debt, Number of Contingent Conversion Conditions Met

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Convertible, Threshold Percentage of Stock Price to Product of Stock Sale Price and Conversion Rate

+ References

No definition available.

+ Details

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- Definition

Debt instrument, Covenant, Maximum Consolidated Total Leverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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Period Type:	duration

- Definition

Debt instrument, Covenants, Aggregate Elected Commitment Amount, Threshold

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Accordian Feature

+ References

No definition available.

+ Details

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- Definition

The minimum current ratio as required by the entity's debt agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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Period Type:	duration

- Definition

The minimum ratio of consolidated EBITDAX to consolidated Interest Expense as required by the entity's debt agreement.

+ References

No definition available.

+ Details

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- 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

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Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

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Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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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.

+ Details

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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Period Type:	instant

- 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

+ Details

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- 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

+ Details

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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

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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+ Details

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Long-Term Debt - Additional Information (Detail)	2 Months Ended	3 Months Ended	12 Months Ended
Long-Term Debt - Additional Information (Detail)	Feb. 26, 2020 USD ($)	Dec. 31, 2019 USD ($) conversionCondition $ / shares	Dec. 31, 2019 USD ($) day conversionCondition $ / shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Nov. 04, 2019 USD ($)	Nov. 03, 2019 USD ($)	Aug. 16, 2019 USD ($)	May 06, 2019 USD ($)	May 05, 2019 USD ($)	Apr. 15, 2019 USD ($)
Debt Instrument [Line Items]
Total long-term debt		$ 2,711,573,000	$ 2,711,573,000	$ 2,735,276,000
Less: unamortized deferred financing costs on senior unsecured notes		$ 22,900,000	$ 22,900,000
Minimum reserve value of oil and natural gas properties (percent)		90.00%	90.00%
Aggregate cost of debt repurchased			$ 45,790,000	423,340,000	$ 0
Gain (loss) on debt repurchase			4,312,000	(13,848,000)	0
Write off of deferred finance costs			$ 500,000	4,000,000.0
Number of contingent conversion condition met \| conversionCondition		0	0
Amortization of deferred financing costs			$ 7,300,000	7,600,000	7,000,000.0
Senior unsecured notes
Debt Instrument [Line Items]
Less: unamortized deferred financing costs on senior unsecured notes		$ 15,618,000	15,618,000	20,865,000
Total principal of senior unsecured notes		1,982,568,000	1,982,568,000	2,039,409,000
Notes maturing in 2021		71,800,000	71,800,000
Notes maturing in 2022		891,000,000.0	891,000,000.0
Notes maturing in 2023		619,800,000	619,800,000
Notes maturing in 2026		400,000,000.0	400,000,000.0
Debt repurchased		22,800,000	22,800,000
Face amount of repurchased debt		24,600,000	24,600,000
Gain (loss) on debt repurchase		1,600,000
Write off of deferred finance costs		200,000			0
Senior unsecured notes \| Subsequent Event
Debt Instrument [Line Items]
Face amount of repurchased debt	$ 27,900,000
Aggregate cost of debt repurchased	$ 22,200,000
Line of credit \| Letter of Credit
Debt Instrument [Line Items]
Outstanding letters of credit		$ 15,100,000	$ 15,100,000	$ 14,000,000.0
Debt, weighted average interest rate		3.50%	3.50%	4.20%
Line of credit \| Revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, capacity available for specific purpose other than for trade purchases		$ 3,000,000,000.0	$ 3,000,000,000.0
Line of credit sublimit						$ 1,300,000,000.0	$ 1,600,000,000.0				$ 1,600,000,000.0
Current borrowing base						$ 1,100,000,000.0	$ 1,350,000,000.0				1,350,000,000.0
Debt, weighted average interest rate		3.80%	3.80%	4.20%
Write off of deferred finance costs			$ 1,600,000	$ 300,000	$ 0
Swingline Loan \| Revolving credit facility
Debt Instrument [Line Items]
Line of credit sublimit											$ 50,000,000.0
Unsecured Senior Notes
Debt Instrument [Line Items]
Long-term debt, fair value		$ 1,812,600,000	1,812,600,000
Unsecured Senior Notes \| Senior unsecured notes
Debt Instrument [Line Items]
Total long-term debt		1,982,600,000	1,982,600,000
OMP Credit Facility \| Revolving credit facility
Debt Instrument [Line Items]
Less: unamortized deferred financing costs on senior unsecured notes		2,500,000	2,500,000
OMP Credit Facility \| Line of credit \| Revolving credit facility
Debt Instrument [Line Items]
Total principal of senior unsecured notes		458,500,000	458,500,000	318,000,000
Line of credit sublimit		575,000,000.0	575,000,000.0					$ 575,000,000.0	$ 475,000,000.0	$ 400,000,000.0
Line of credit, sublimit increase allowed subject to certain conditions								$ 775,000,000.0	$ 675,000,000.0
Unused borrowing capacity		114,800,000	114,800,000	82,000,000.0
OMP Credit Facility \| Letter of Credit \| Revolving credit facility
Debt Instrument [Line Items]
Total principal of senior unsecured notes		1,700,000	1,700,000
Oasis Credit Facility \| Line of credit \| Revolving credit facility
Debt Instrument [Line Items]
Total principal of senior unsecured notes		337,000,000	337,000,000	468,000,000
2022 Notes and 2023 Notes \| Senior unsecured notes
Debt Instrument [Line Items]
Total long-term debt		1,242,900,000	1,242,900,000
2.625% senior unsecured convertible notes due September 15, 2023 \| Senior unsecured notes
Debt Instrument [Line Items]
Total long-term debt		267,800,000	267,800,000
Debt discount at inception		50,877,000	50,877,000	69,268,000
Total principal of senior unsecured notes		267,800,000	267,800,000	300,000,000
Debt repurchased		$ 23,000,000.0	$ 23,000,000.0
Senior unsecured notes stated interest rate (percent)		2.625%	2.625%
Senior unsecured debt principal amount		$ 267,800,000	$ 267,800,000
Face amount of repurchased debt		32,200,000	$ 32,200,000
Gain (loss) on debt repurchase		2,700,000
Write off of deferred finance costs		300,000
Write-off of unamortized debt discount		$ 6,200,000
Initial conversion rate (shares per $1000 principal)			0.0763650
Debt conversion rate (in usd per share) \| $ / shares		$ 13.10	$ 13.10
Amended credit facility
Debt Instrument [Line Items]
Minimum current ratio			1.0
Aggregate elected commitment threshold		$ 0.85	$ 0.85
Letter of credit unused borrowing base capacity		747,900,000	$ 747,900,000	868,000,000.0
Amended credit facility \| Minimum
Debt Instrument [Line Items]
Minimum debt to EBITDAX ratio			2.5
The Credit Agreement \| Bridge Loan
Debt Instrument [Line Items]
Line of credit sublimit		10,000,000.0	$ 10,000,000.0
Notes \| Senior unsecured notes
Debt Instrument [Line Items]
Senior unsecured notes outstanding		$ 1,714,800,000	$ 1,714,800,000
Notes \| Senior unsecured notes \| Minimum
Debt Instrument [Line Items]
Senior unsecured notes stated interest rate (percent)		6.25%	6.25%
Notes \| Senior unsecured notes \| Maximum
Debt Instrument [Line Items]
Senior unsecured notes stated interest rate (percent)		6.875%	6.875%
6.875% senior unsecured notes due March 15, 2022 \| Senior unsecured notes
Debt Instrument [Line Items]
Total principal of senior unsecured notes		$ 890,980,000	$ 890,980,000	901,480,000
Senior unsecured notes stated interest rate (percent)		6.875%	6.875%
Face amount of repurchased debt		$ 10,500,000	$ 10,500,000
6.875% senior unsecured notes due January 15, 2023 \| Senior unsecured notes
Debt Instrument [Line Items]
Total principal of senior unsecured notes		$ 351,953,000	$ 351,953,000	$ 366,094,000
Senior unsecured notes stated interest rate (percent)		6.875%	6.875%
Face amount of repurchased debt		$ 14,100,000	$ 14,100,000
Oasis Credit Facility \| Revolving credit facility
Debt Instrument [Line Items]
Less: unamortized deferred financing costs on senior unsecured notes		4,800,000	$ 4,800,000
Debt Conversion Scenario 1 \| 2.625% senior unsecured convertible notes due September 15, 2023 \| Senior unsecured notes
Debt Instrument [Line Items]
Number of trading days \| day			20
Number of consecutive trading days \| day			30
Conversion price, percentage of stock price trigger (percent)			130.00%
Debt Conversion Scenario 1 \| Amended credit facility
Debt Instrument [Line Items]
EBITDAX ratio			4.25
Debt Conversion Scenario 2 \| 2.625% senior unsecured convertible notes due September 15, 2023 \| Senior unsecured notes
Debt Instrument [Line Items]
Number of trading days \| day			5
Number of consecutive trading days \| day			5
Percentage of stock price to product of stock sale price and conversion rate (percent)			98.00%
Debt Conversion Scenario 2 \| Amended credit facility
Debt Instrument [Line Items]
EBITDAX ratio			4.00
LIBOR \| Revolving credit facility \| Minimum
Debt Instrument [Line Items]
Loan term			1 month
Commitment fee of borrowing base capacity not utilized, percentage			0.375%
LIBOR \| Revolving credit facility \| Maximum
Debt Instrument [Line Items]
Loan term			6 months
Commitment fee of borrowing base capacity not utilized, percentage			0.50%
OMP Operating, LLC \| Letter of Credit \| Letter of Credit
Debt Instrument [Line Items]
Line of credit sublimit		$ 10,000,000.0	$ 10,000,000.0
OMP Operating, LLC \| Federal Funds Effective Swap Rate \| ABR Loans \| Revolving credit facility
Debt Instrument [Line Items]
Applicable margin on variable rate (percent)			0.50%
OMP Operating, LLC \| LIBOR \| ABR Loans \| Revolving credit facility
Debt Instrument [Line Items]
Applicable margin on variable rate (percent)			1.00%