Lease Rental Revenues and Flight Equipment Held for Lease (Details 1) - Lease Rental Revenue - Geographic Concentration Risk	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	100.00%	100.00%	100.00%	100.00%
Asia and Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	28.00%	29.00%	28.00%	29.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	44.00%	35.00%	43.00%	35.00%
Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	8.00%	8.00%	8.00%	8.00%
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	10.00%	17.00%	10.00%	17.00%
Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of geographic concentration	10.00%	11.00%	11.00%	11.00%