Contract revenue - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Capitalized Contract Cost [Line Items] | |||||
| Contract with customer, asset | $ 3,100 | $ 3,100 | $ 2,900 | ||
| Contract assets representing accrued revenues not yet billed | 66 | 66 | 37 | ||
| Contract with customer, liability | 226 | 226 | 180 | ||
| Contract with customer, liability, revenue recognized | 68 | 78 | |||
| Incremental costs for obtaining contracts | |||||
| Capitalized Contract Cost [Line Items] | |||||
| Capitalized contract costs | 50 | 50 | 47 | ||
| Capitalized contract cost, amortization | 2 | $ 4 | 5 | $ 7 | |
| Costs to fulfill contract | |||||
| Capitalized Contract Cost [Line Items] | |||||
| Capitalized contract costs | $ 140 | $ 140 | $ 128 | ||
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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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