The amount maturing on a line of credit.

No definition available.

Name:	al_LineOfCreditAmountMaturing
Namespace Prefix:	al_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Commitments with Extended Maturity

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Increase in Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	al_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of aircraft pledged as collateral.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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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.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

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-Publisher FASB
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-SubTopic 470
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 1
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Period Type:	instant

- Details

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- Details

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- Details

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Debt Financing - Narrative (Details) $ in Thousands	6 Months Ended
Debt Financing - Narrative (Details) $ in Thousands	Jun. 30, 2022 USD ($) aircraft	Aug. 04, 2022 USD ($)	May 05, 2022 USD ($)	Dec. 31, 2021 USD ($) aircraft
Debt Instrument [Line Items]
Outstanding balance	$ 18,531,252			$ 17,204,019
Subsequent Event
Debt Instrument [Line Items]
Line of credit maturity amount		$ 7,100,000
Senior notes
Debt Instrument [Line Items]
Outstanding balance	17,685,728			16,892,058
Medium Term Note Program \| Senior notes
Debt Instrument [Line Items]
Principal amount issued	1,500,000
Medium Term Note Program Due 2027 \| Senior notes
Debt Instrument [Line Items]
Principal amount issued	$ 750,000
Interest rate	2.20%
Medium Term Note Program Due 2032 \| Senior notes
Debt Instrument [Line Items]
Principal amount issued	$ 750,000
Interest rate	2.875%
Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding balance	$ 520,000			0
Maximum borrowing capacity			$ 7,000,000
Facility fee	0.20%
Increase in borrowing capacity	$ 122,500
Commitments with extended maturity	$ 125,000
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Interest margin	1.05%
Unsecured Revolving Credit Facility Mature May 5, 2026 \| Debt Instrument, Redemption, Period One \| Subsequent Event
Debt Instrument [Line Items]
Line of credit maturity amount		6,700,000
Unsecured Revolving Credit Facility Mature May 5, 2025 \| Debt Instrument, Redemption, Period Two \| Subsequent Event
Debt Instrument [Line Items]
Line of credit maturity amount		32,500
Unsecured Revolving Credit Facility Mature May 5, 2023 \| Debt Instrument, Redemption, Period Three \| Subsequent Event
Debt Instrument [Line Items]
Line of credit maturity amount		$ 375,000
Other Debt Financings
Debt Instrument [Line Items]
Outstanding balance	$ 325,500			$ 312,000
Number of aircraft pledged as collateral \| aircraft	3			3
Net book value of aircraft pledged as collateral	$ 217,100			$ 222,200