Trade Accounts Receivable, Unbilled Services and Unearned Income - Schedule of Net Contract Assets (Liabilities) (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Unbilled services | ||
| Unbilled services, beginning balance | $ 1,856 | |
| Change | (73) | |
| Unbilled services, ending balance | 1,783 | |
| Unearned income | ||
| Unearned income, beginning balance | (1,779) | |
| Change | (339) | |
| Unearned income, ending balance | (2,118) | |
| Net balance | (335) | $ 77 |
| Decrease of net balance of unbilled services and unearned income | $ (412) |
| X | ||||||||||
- Definition Contract with customer, change in unbilled contracts receivable. No definition available.
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| X | ||||||||||
- Definition Increase decrease in net balance of unbilled services and unearned income. No definition available.
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| X | ||||||||||
- Definition Contract with Customer, Liability, Current No definition available.
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| X | ||||||||||
- Definition Contract with customer, net contract asset (liabilities). No definition available.
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| X | ||||||||||
- Definition Unbilled Contracts Receivables No definition available.
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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