Commitments and Contingencies - Aircraft Acquisition (Details)	9 Months Ended
Sep. 30, 2021 aircraft
Aircrafts
Long-term Purchase Commitment [Line Items]
2021	25
2022	77
2023	59
2024	85
2025	42
Thereafter	32
Total	320
Airbus A220-300
Long-term Purchase Commitment [Line Items]
2021	0
2022	3
2023	9
2024	16
2025	12
Thereafter	11
Total	51
Airbus A320/321neo
Long-term Purchase Commitment [Line Items]
2021	12
2022	24
2023	22
2024	26
2025	19
Thereafter	21
Total	124
Number of long-range variant aircraft	31
Number of extra long-range variant aircrafts	29
Airbus A330-900neo
Long-term Purchase Commitment [Line Items]
2021	1
2022	8
2023	4
2024	0
2025	0
Thereafter	0
Total	13
Airbus A350-900/1000
Long-term Purchase Commitment [Line Items]
2021	3
2022	3
2023	4
2024	5
2025	1
Thereafter	0
Total	16
Boeing 737-7/8/9 MAX
Long-term Purchase Commitment [Line Items]
2021	8
2022	29
2023	16
2024	28
2025	7
Thereafter	0
Total	88
Boeing 787-9/10
Long-term Purchase Commitment [Line Items]
2021	1
2022	10
2023	4
2024	10
2025	3
Thereafter	0
Total	28
A220 Aircraft \| Maximum
Long-term Purchase Commitment [Line Items]
Number of aircraft to be acquired under non-binding commitment	24

Represents the amount of aircrafts to be acquired under memorandums of understanding or non-binding commitments.

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required, After Year Four

+ References

No definition available.

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required, Year Four

+ References

No definition available.

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required, Year One

+ References

No definition available.

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required, Year Three

+ References

No definition available.

+ Details

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required, Year Two

+ References

No definition available.

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- Definition

Long Term Purchase Commitment, Minimum Quantity Required in Remainder Of Fiscal Year End

+ References

No definition available.

+ Details

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- Definition

Number Of Extra Long Range Variants

+ References

No definition available.

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- Definition

Represents the number of long-range variants.

+ References

No definition available.

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- 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.

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- Definition

Number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

+ References

No definition available.

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