Liabilities Subject to Compromise, Fair Value

No definition available.

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Namespace Prefix:	save_
Data Type:	xbrli:monetaryItemType
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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

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

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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.

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- Definition

Total amount of liabilities subject to compromise.

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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.

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Fair Value Measurements - Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 12, 2025	Dec. 31, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Carrying Value	$ 2,581,300		$ 2,210,500
Carrying Value	0	$ 1,600,000	1,635,104
Estimated Fair Value	0		1,293,100
Term Loan \| DIP Facility
Debt Instrument [Line Items]
Carrying Value	0		309,000
Fixed-rate term loans
Debt Instrument [Line Items]
Carrying Value	904,900		972,200
Unsecured term loans \| Payroll Support Program, CARES Act
Debt Instrument [Line Items]
Carrying Value	136,300		136,300
Enhanced Equipment Trust Certificate \| 2015-1 EETC Class A
Debt Instrument [Line Items]
Carrying Value	234,600		234,600
Enhanced Equipment Trust Certificate \| 2017-1 EETC Class AA
Debt Instrument [Line Items]
Carrying Value	154,300		160,300
Enhanced Equipment Trust Certificate \| 2017-1 EETC Class A
Debt Instrument [Line Items]
Carrying Value	51,400		53,400
Enhanced Equipment Trust Certificate \| 2017-1 EETC Class B
Debt Instrument [Line Items]
Carrying Value	43,000		44,700
Enhanced Equipment Trust Certificate \| 2025-1 EETC Class B
Debt Instrument [Line Items]
Carrying Value	215,000		0
Revolving credit facility \| Revolving credit facility due in 2026
Debt Instrument [Line Items]
Carrying Value	0		300,000
Exit Secured Notes \| Senior Notes
Debt Instrument [Line Items]
Carrying Value	841,800		0
Long Term Debt Excluding Liabilities Subject To Compromise
Debt Instrument [Line Items]
Carrying Value	$ 2,581,300		2,210,500
Secured Debt \| 8.00% Senior Secured Notes
Debt Instrument [Line Items]
Stated interest rate percentage	8.00%	8.00%		8.00%
Carrying Value	$ 0		1,110,000
Convertible Notes \| 4.75% convertible notes due 2025
Debt Instrument [Line Items]
Stated interest rate percentage	4.75%
Carrying Value	$ 0		25,100
Convertible Notes \| 1.00% convertible notes due 2026
Debt Instrument [Line Items]
Stated interest rate percentage	1.00%
Carrying Value	$ 0		500,000
Estimated Fair Value \| Term Loan \| Level 3 \| DIP Facility
Debt Instrument [Line Items]
Estimated Fair Value	0		309,000
Estimated Fair Value \| Fixed-rate term loans \| Level 3
Debt Instrument [Line Items]
Estimated Fair Value	903,300		970,700
Estimated Fair Value \| Unsecured term loans \| Level 3 \| Payroll Support Program, CARES Act
Debt Instrument [Line Items]
Estimated Fair Value	130,000		130,400
Estimated Fair Value \| Enhanced Equipment Trust Certificate \| Level 2 \| 2015-1 EETC Class A
Debt Instrument [Line Items]
Estimated Fair Value	216,200		215,800
Estimated Fair Value \| Enhanced Equipment Trust Certificate \| Level 2 \| 2017-1 EETC Class AA
Debt Instrument [Line Items]
Estimated Fair Value	136,700		140,400
Estimated Fair Value \| Enhanced Equipment Trust Certificate \| Level 2 \| 2017-1 EETC Class A
Debt Instrument [Line Items]
Estimated Fair Value	44,500		45,800
Estimated Fair Value \| Enhanced Equipment Trust Certificate \| Level 2 \| 2017-1 EETC Class B
Debt Instrument [Line Items]
Estimated Fair Value	42,800		40,500
Estimated Fair Value \| Enhanced Equipment Trust Certificate \| Level 2 \| 2025-1 EETC Class B
Debt Instrument [Line Items]
Estimated Fair Value	212,900		0
Estimated Fair Value \| Revolving credit facility \| Level 3 \| Revolving credit facility due in 2026
Debt Instrument [Line Items]
Estimated Fair Value	0		300,000
Estimated Fair Value \| Exit Secured Notes \| Level 3 \| 2030 Senior Notes
Debt Instrument [Line Items]
Estimated Fair Value	802,400		0
Estimated Fair Value \| Long Term Debt Excluding Liabilities Subject To Compromise
Debt Instrument [Line Items]
Estimated Fair Value	2,488,800		2,152,600
Estimated Fair Value \| Secured Debt \| Level 3 \| 8.00% Senior Secured Notes
Debt Instrument [Line Items]
Estimated Fair Value	0		1,117,900
Estimated Fair Value \| Convertible Notes \| Level 2 \| 4.75% convertible notes due 2025
Debt Instrument [Line Items]
Estimated Fair Value	0		8,800
Estimated Fair Value \| Convertible Notes \| Level 2 \| 1.00% convertible notes due 2026
Debt Instrument [Line Items]
Estimated Fair Value	$ 0		$ 166,400