Airframe check expense.

No definition available.

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- Definition

Airframe check, pass-through expense.

+ References

No definition available.

+ Details

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- Definition

Engine overhaul expense.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Engine overhaul, pass-through expense.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage leased.

+ References

No definition available.

+ Details

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- Definition

Summary Of Significant Accounting Policies [Line Items]

+ References

No definition available.

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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-Publisher FASB
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Period Type:	instant

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

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-Publisher FASB
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Period Type:	instant

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized that was previously reported as deferred or unearned revenue.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended
	Nov. 04, 2020	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Summary Of Significant Accounting Policies [Line Items]
Current and non-current deferred credit balances			$ 7.7		$ 8.5
Recognized deferred credits to revenue			0.8	$ 1.1
Contract assets balances			1.6		$ 2.0
Contract cost amortization			0.4	0.6
Engine overhaul expense			14.4	10.6
Engine overhaul pass-through expense			9.6	1.9
Airframe check expense			10.1	7.3
Airframe check pass-through expense			$ 7.1	1.2
Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage leased			11.00%
Contract Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Lease revenue			$ 49.5	$ 53.3
E175LL Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Prepayment	$ 81.5		81.5
Prepayment recognized			$ 33.3
E175LL Aircraft [Member] \| Scenario Forecast [Member]
Summary Of Significant Accounting Policies [Line Items]
Prepayment recognized		$ 48.2