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Subsequent Events - Additional Information (Detail1) $ in Millions										3 Months Ended
	Jul. 31, 2024 AirCraft	Jun. 30, 2024 AirCraft	May 31, 2024 AirCraft	May 21, 2024 AirCraft	Apr. 30, 2024 AirCraft	Apr. 22, 2024 AirCraft	Apr. 15, 2024 USD ($)	Mar. 31, 2024 AirCraft	Jan. 01, 2024 USD ($)	Mar. 31, 2024 AirCraft	Dec. 31, 2023 USD ($)	Dec. 31, 2023 AirCraft	Dec. 31, 2023 Airframes
CRJ-900 Aircraft [Member]
Subsequent Event [Line Items]
Number of aircraft to be removed | AirCraft												10
Gross proceeds from sale of asset | $											$ 12.0
Number of airframes without engines												11	11
Forecast [Member] | CRJ-900 Aircraft [Member]
Subsequent Event [Line Items]
Number of aircraft to be removed | AirCraft	2	2	1	1	2			2
Subsequent Event [Member]
Subsequent Event [Line Items]
Gross proceeds from sale of asset | $									$ 54.2
Proceeds from sale of asset | $									$ 15.9
Impact of Pilot Shortage and Transition of Operations to United [Member] | RASPRO Letter Agreement [Member] | Forecast [Member]
Subsequent Event [Line Items]
Buyout price | $							$ 50.3
Impact of Pilot Shortage and Transition of Operations to United [Member] | RASPRO Aircraft Lease Agreement One [Member] | Forecast [Member]
Subsequent Event [Line Items]
Number of engines | AirCraft						30				30
Impact of Pilot Shortage and Transition of Operations to United [Member] | RASPRO Aircraft Lease Agreement Two [Member] | Forecast [Member]
Subsequent Event [Line Items]
Number of airframes without engines | AirCraft						15				15

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Gross Proceeds From Sale Of Productive Assets

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Number of aircraft removed.

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Number of airframes without engines.

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- Definition

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- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-12

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

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