Revenue - Air Traffic Liability Rollforward (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Change in Contract With Customer, Liability [Roll Forward] | ||
| Beginning balance | $ 7,164 | $ 8,242 |
| Current period sales | 14,891 | 12,489 |
| Revenue from amounts included in contract liability opening balances | (3,515) | (3,855) |
| Revenue from current period sales | (10,356) | (8,580) |
| Ending balance | $ 8,184 | $ 8,296 |
| X | ||||||||||
- Definition Change in Contract With Customer, Liability No definition available.
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- Definition Contract With Customer, Liability, Additions No definition available.
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- Definition Contract With Customer, Liability, Revenue Recognized, Current Period No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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