REVENUE FROM CONTRACTS WITH CUSTOMERS - Contract Costs (Details) - CHF (SFr) SFr in Millions |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Revenue From Contracts With Customers [Abstract] | |||
| Balance as of 1 January | SFr 80.4 | SFr 69.3 | SFr 62.5 |
| Additional capitalised contract cost | 81.5 | 88.1 | 71.6 |
| Amortised contract cost | (79.5) | (77.0) | (64.8) |
| Balance as of 31 December | SFr 82.4 | SFr 80.4 | SFr 69.3 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Additions, Assets Recognized From Costs To Obtain Or Fulfil Contracts With Customers No definition available.
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- Definition Revenue From Contracts With Customers [Abstract] No definition available.
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