Commitments and Contingencies - Schedule of Capital Commitments (Details) $ in Billions	3 Months Ended	6 Months Ended
Jun. 30, 2026 USD ($) aircraft	Jun. 30, 2026 USD ($) aircraft
-8 Firm Orders
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft deliveries \| aircraft	13	23
Aircraft
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2026	$ 3.9	$ 3.9
2027	3.0	3.0
2028	2.7	2.7
2029	2.5	2.5
2030	1.5	1.5
2031	1.2	1.2
Total	14.8	14.8
Aircraft \| Year 2025 \| MAX
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2026	2.7	$ 2.7
Number of aircraft deliveries \| aircraft		86
Aircraft \| Year 2024 \| MAX
Unrecorded Unconditional Purchase Obligation [Line Items]
2027	$ 1.2	$ 1.2
Number of aircraft deliveries \| aircraft		58
Aircraft \| Year 2024 \| -7 Firm Orders
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft deliveries \| aircraft		27
Aircraft \| Year 2024 \| -8 Firm Orders
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft deliveries \| aircraft		31

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced.

+ References

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Includes, but is not limited to, lease not yet commenced.

+ References

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+ References

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+ References

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- Definition

Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts.

+ References

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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

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