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If-converted value of convertible notes above (below) the principal amount as of the reporting date.

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Represents the issue price of the debt instrument as a percentage of its face value.

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Represents the redemption price as a percentage of the principal amount at which the debt instruments may be redeemed with net proceeds of certain equity offerings.

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Represents the percentage of the aggregate principal amount of debt instruments that may be redeemed with net proceeds of certain equity offerings.

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The cash outflow for cash inducement premiums.

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The gross value of stock issued during the period upon the induced conversion of convertible securities.

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Period of threshold days for maturity of debt before debt term.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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

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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.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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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.

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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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.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Percentage of principal amount of debt redeemed.

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

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Amount, after accumulated amortization, of debt discount (premium).

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

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Consideration given by issuer of convertible debt to provide an incentive for debt holders to convert the debt to equity securities. The expense is equal to the fair value of all securities and other consideration transferred in the transaction in excess of the fair value of securities issuable pursuant to the original conversion terms.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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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.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Long-Term Debt (Details) $ in Thousands, shares in Millions					1 Months Ended	3 Months Ended		12 Months Ended	15 Months Ended
Long-Term Debt (Details) $ in Thousands, shares in Millions	Jun. 01, 2021 USD ($)	Jan. 26, 2021 USD ($)	Jan. 04, 2021 USD ($)	Aug. 21, 2020 USD ($) D	Sep. 02, 2020 USD ($)	Mar. 31, 2023 USD ($) shares	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 18, 2021 USD ($)	Dec. 21, 2016 USD ($)
Long-Term Debt
Total principal						$ 1,323,511			$ 1,323,511	$ 1,195,717
Unamortized debt issuance costs						(11,465)			(11,465)	(12,241)
Long-term debt						1,312,046			1,312,046	1,183,476
Aggregate principal amount converted						17,172
Loss on convertible note equitizations						86
Gain (loss) on extinguishment of debt repurchased							$ (10,654)
Credit Facility
Long-Term Debt
Credit facility						180,100			180,100	34,800
Current borrowing base						3,500,000			3,500,000	3,500,000
Lender commitments						$ 1,500,000			1,500,000	1,500,000
Debt maturity threshold days						180 days
Available borrowing capacity						$ 816,000			816,000
Outstanding letters of credit						$ 504,000			$ 504,000	$ 504,000
Weighted average interest rate (as a percent)						6.91%			6.91%	6.42%
Credit Facility \| Minimum
Long-Term Debt
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)						0.375%
Credit Facility \| Maximum
Long-Term Debt
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)						0.50%
5.00% senior notes due 2025
Long-Term Debt
Senior notes												$ 600,000
Interest rate (as a percent)												5.00%
Issue price as percentage of par value												100.00%
5.00% senior notes due 2025 \| Debt Repurchase Program
Long-Term Debt
Amount of debt repurchased							585,000
Gain (loss) on extinguishment of debt repurchased							$ (11,000)
Percentage of redeemed amount							101.25%
8.375% Senior Notes Due 2026
Long-Term Debt
Senior notes			$ 500,000			$ 96,870			$ 96,870	$ 96,870
Interest rate (as a percent)			8.375%			8.375%			8.375%	8.375%
Issue price as percentage of par value			100.00%
Redemption price of the debt instrument in the event of change of control (as a percent)			101.00%
Amount of debt repurchased										$ 403,000
8.375% Senior Notes Due 2026 \| On or after January 15, 2024
Long-Term Debt
Redemption price			104.188%
8.375% Senior Notes Due 2026 \| On or after January 15, 2026
Long-Term Debt
Redemption price			100.00%
8.375% Senior Notes Due 2026 \| Prior to January 15, 2024
Long-Term Debt
Redemption price			100.00%
7.625% Senior Notes Due 2029
Long-Term Debt
Senior notes		$ 700,000				$ 407,115			$ 407,115	$ 407,115
Interest rate (as a percent)		7.625%				7.625%			7.625%	7.625%
Issue price as percentage of par value		100.00%
Redemption price of the debt instrument in the event of change of control (as a percent)		101.00%
Amount of debt repurchased										$ 293,000	$ 116,000
7.625% Senior Notes Due 2029 \| On or after February 1, 2024
Long-Term Debt
Redemption price		103.813%
7.625% Senior Notes Due 2029 \| On or after February 1, 2027
Long-Term Debt
Redemption price		100.00%
7.625% Senior Notes Due 2029 \| On or before February 1, 2024
Long-Term Debt
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)		107.625%
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings		35.00%
7.625% Senior Notes Due 2029 \| Prior to February 1, 2024
Long-Term Debt
Redemption price		100.00%
5.375% senior notes due 2030
Long-Term Debt
Senior notes	$ 600,000					$ 600,000			$ 600,000	$ 600,000
Interest rate (as a percent)	5.375%					5.375%			5.375%	5.375%
Issue price as percentage of par value	100.00%
Redemption price of the debt instrument in the event of change of control (as a percent)	101.00%
5.375% senior notes due 2030 \| On or after March 1, 2025
Long-Term Debt
Redemption price	102.688%
5.375% senior notes due 2030 \| On or after March 1, 2028
Long-Term Debt
Redemption price	100.00%
5.375% senior notes due 2030 \| On or Before March 1, 2025
Long-Term Debt
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)	105.375%
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings	35.00%
5.375% senior notes due 2030 \| Prior to March 1, 2025
Long-Term Debt
Redemption price	100.00%
4.25% convertible senior notes due 2026
Long-Term Debt
Convertible senior notes				$ 250,000	$ 37,500	$ 39,426			$ 39,426	$ 56,932
Unamortized discount, net				$ (116,000)
Unamortized debt issuance costs						(753)			(753)	(1,159)
Long-term debt						$ 38,673			$ 38,673	$ 55,773
Interest rate (as a percent)				4.25%		4.25%			4.25%	4.25%
Amount of debt converted								$ 206,000	$ 43,000
Issuance of convertible notes					278,500
Payments of deferred financing costs					$ 9,000
Conversion rate				230.2026
If-converted value						$ 210,000			210,000
If-converted value above principal amount						170,000			$ 170,000
Aggregate principal amount converted						9,000
Aggregate principal amount induced into conversion						$ 9,000
Shares issued to cover conversions (in shares) \| shares						4
Cash inducement premium						$ 100
Effective interest rate (as a percent)				15.10%				15.10%
Interest expense							$ 1,000
4.25% convertible senior notes due 2026 \| Convertible debt threshold minimum percentage
Long-Term Debt
Stock price trigger				98.00%
Trading days \| D				5
Consecutive trading days \| D				10
4.25% convertible senior notes due 2026 \| Convertible debt threshold maximum percentage
Long-Term Debt
Stock price trigger				130.00%
Trading days \| D				20
Consecutive trading days \| D				30
4.25% convertible senior notes due 2026 \| Fair value
Long-Term Debt
Fair value				$ 172,000