Commitment and Contingencies - Long Term Purchase Commitments (Details)	Mar. 31, 2022 aircraft
Long-term Purchase Commitment [Line Items]
2022	114
2023	90
2024	86
2025	86
2026	70
2027	36
2028	30
2029	50
2030	60
2031	10
Total	632
-7 Firm Orders
Long-term Purchase Commitment [Line Items]
2022	72
2023	64
2024	30
2025	30
2026	15
2027	15
2028	15
2029	20
2030	15
2031	0
Total	276
-8 Firm Orders
Long-term Purchase Commitment [Line Items]
2022	15
2023	0
2024	0
2025	0
2026	15
2027	15
2028	15
2029	30
2030	45
2031	10
Total	145
-7 or -8 Options
Long-term Purchase Commitment [Line Items]
2022	27
2023	26
2024	56
2025	56
2026	40
2027	6
2028	0
2029	0
2030	0
2031	0
Total	211