Revenue recognition - Contract assets and liabilities (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Revenue from Contract with Customer [Abstract] | ||
| Contract assets, current (included in accounts receivable, net) | $ 36.9 | $ 43.3 |
| Total contract assets | 36.9 | 43.3 |
| Contract liabilities, current (included in customer deposits and deferred revenue) | (139.5) | (128.3) |
| Contract liabilities, long-term (included in other long-term liabilities) | (12.4) | (13.3) |
| Total contract liabilities | (151.9) | (141.6) |
| Net contract assets (liabilities) | $ (115.0) | $ (98.3) |
| X | ||||||||||
- Definition Contract with Customer, Asset (Liability), Net No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| 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/exampleRef
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|