Commitments and Contingencies - Narrative (Details) - LATAM - A350-900	3 Months Ended
	Mar. 31, 2020 aircraft
Commitments and Contingencies [Line Items]
Number of aircraft agreed to acquire	4
Number of aircraft assumed	10
Future aircraft purchase commitments
Commitments and Contingencies [Line Items]
Number of aircraft agreed to acquire	4
Number of aircraft assumed	10