Number of Aircraft Sold

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Total number of aircraft owned by joint ventures

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Total number of aircraft sold by joint ventures

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Refundable consideration, usually cash, held by the entity pending satisfactory completion of the entity's obligations or pending the closing of a contract.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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Cash received from sales of long-lived depreciable flight assets, including owned aircraft or capital improvements.

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The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

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Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

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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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Unconsolidated Equity Method Investment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Aircraft	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Distributions from unconsolidated equity method investment in excess of earnings	$ 36,750	$ 3,900	$ 0
Investment in joint ventures	15,175	4,115
Proceeds from Sale of Flight Equipment	361,747	338,831	$ 833,576
Customer Advances and Deposits	$ 682,398	739,072
Total number of aircraft owned by joint ventures \| Aircraft	9,000
Net Book Value	$ 7,375,018	$ 6,935,585
OTPP [Member]
Schedule of Equity Method Investments [Line Items]
Total number of aircraft sold by joint ventures \| Aircraft	8
Related Party Transaction, Other Revenues from Transactions with Related Party	$ 5,431
IBJ Air [Member]
Schedule of Equity Method Investments [Line Items]
Related Party Transaction, Other Revenues from Transactions with Related Party	1,985
Equity Method Investee
Schedule of Equity Method Investments [Line Items]
Net Book Value	$ 327,839
Equity Method Investee \| IBJ Air [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	25.00%
Equity Method Investee \| IBJ Air [Member] \| B-737-800 [Member]
Schedule of Equity Method Investments [Line Items]
Number of Aircraft Sold \| Aircraft	4