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The principal amount of debt redeemed.

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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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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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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 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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Long-Term Debt (Details) $ / shares in Units, $ in Thousands, shares in Millions									3 Months Ended				6 Months Ended		12 Months Ended
	Jul. 01, 2022 shares	Jun. 29, 2022 USD ($)	Jun. 01, 2021 USD ($)	May 13, 2021 USD ($) $ / shares shares	Jan. 26, 2021 USD ($)	Jan. 12, 2021 USD ($) $ / shares shares	Jan. 04, 2021 USD ($)	Aug. 21, 2020 USD ($) D	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Oct. 18, 2021 USD ($)	Jul. 01, 2021 USD ($)	Sep. 02, 2020 USD ($)	Dec. 21, 2016 USD ($)	Mar. 17, 2015 USD ($)	Sep. 18, 2014 USD ($)	May 06, 2014 USD ($)
Long-Term Debt
Total principal									$ 1,594,137				$ 1,594,137		$ 2,175,205
Unamortized discount, net															(27,772)
Unamortized debt issuance costs									(16,924)				(16,924)		(21,989)
Long-term debt									1,577,213				1,577,213		2,125,444
Payments of deferred financing costs														$ 22,440
Loss on convertible note equitizations											$ 11,731			50,777
Gain (loss) on extinguishment of debt repurchased									(4,414)		(23,065)		(15,068)	(66,269)
Credit Facility
Long-Term Debt
Credit facility									70,800				70,800		0
Current borrowing base									3,500,000				3,500,000		3,500,000
Available borrowing capacity									924,000				924,000
Lender commitments									$ 1,500,000				$ 1,500,000		1,500,000
Debt maturity threshold date													180 days
Weighted average interest rate (as a percent)									3.95%				3.95%
Outstanding letters of credit									$ 505,000				$ 505,000		531,000
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%
5.125 senior notes due 2022
Long-Term Debt
Total principal																					$ 500,000	$ 600,000
Interest rate (as a percent)																					5.125%	5.125%
Issue price as percentage of par value																					100.50%	100.00%
5.125 senior notes due 2022 \| Debt Repurchase Program
Long-Term Debt
Amount of debt repurchased												$ 661,000
5.625% senior notes due 2023
Long-Term Debt
Total principal																				$ 750,000
Interest rate (as a percent)																				5.625%
Issue price as percentage of par value																				100.00%
Amount of debt repurchased											$ 574,000			$ 574,000
5.00% senior notes due 2025
Long-Term Debt
Senior notes															$ 584,635				$ 600,000
Interest rate (as a percent)															5.00%				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 and 7.625% Senior Notes Due 2029
Long-Term Debt
Weighted average percentage premium on repurchases of debt									106.00%
Gain (loss) on extinguishment of debt repurchased									$ 4,000
8.375% Senior Notes Due 2026
Long-Term Debt
Senior notes							$ 500,000		$ 311,767				$ 311,767		$ 325,000
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									$ 13,000				$ 13,000
8.375% Senior Notes Due 2026 \| Debt Repurchase Program
Long-Term Debt
Redemption amount																	$ 175,000
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				$ 534,000				$ 534,000		$ 584,000
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									$ 50,000				$ 50,000			$ 116,000
Redemption amount															$ 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
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings					35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)					107.625%
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
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings			35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)			105.375%
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	$ 77,570				$ 77,570		$ 81,570			$ 37,500
Unamortized discount, net								$ (116,000)							(27,772)
Unamortized debt issuance costs									(1,779)				(1,779)		(1,592)
Long-term debt									$ 75,791				$ 75,791		$ 52,206
Interest rate (as a percent)								4.25%	4.25%				4.25%		4.25%
Issuance of convertible notes								$ 278,500
Payments of deferred financing costs								$ 9,000
Equity component															$ 32,799
Principal amount of debt converted		$ 4,000
Shares issued on conversion \| shares	1.0
If-converted value									$ 547,000				$ 547,000
If-converted value above principal amount									470,000				470,000
Conversion rate								230.2026
Effective interest rate (as a percent)								15.10%			15.10%			15.10%
Deferred taxes															8,000
Debt issuance cost															1,000
Interest expense									$ 1,000		$ 3,000		$ 2,000	$ 7,000
Amount of debt converted															$ 206,000
4.25% convertible senior notes due 2026 \| January Share Offering
Long-Term Debt
Conversion rate						275.3525
Amount of debt converted						$ 150,000
Loss on convertible note equitizations												39,000
Gain (loss) on extinguishment of debt repurchased												$ (41,000)
Line of credit proceeds used to repurchase convertible notes						$ 63,000
Number of shares of common stock issued (in shares) \| shares						31.4
Share price \| $ / shares						$ 6.35
4.25% convertible senior notes due 2026 \| May Share Offering
Long-Term Debt
Conversion rate				245.2802
Amount of debt converted				$ 56,000
Loss on convertible note equitizations											12,000
Gain (loss) on extinguishment of debt repurchased											$ (21,000)
Line of credit proceeds used to repurchase convertible notes				$ 26,000
Number of shares of common stock issued (in shares) \| shares				11.6
Share price \| $ / shares				$ 11.01
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