CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME OR LOSS - CHF (SFr) SFr in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Profit or loss [abstract]
Net (loss)	SFr (108.5)	SFr (361.9)	SFr (312.2)
Items that are or may be reclassified to the statement of income or loss
Foreign currency translation adjustments	0.0	(13.3)	(95.0)
Items that will not be reclassified to the statement of income or loss
Pension-relation adjustments	2.8	(8.9)	(28.4)
Related tax	(0.6)	1.2	5.4
Other comprehensive income (loss), net of taxes	2.2	(21.0)	(118.0)
Attributable to:
Sunrise Communications AG shareholders	2.3	(21.0)	(117.8)
Non-controlling interest	(0.1)	0.0	(0.2)
Total comprehensive (loss), net of taxes	(106.3)	(382.9)	(430.2)
Attributable to:
Sunrise Communications AG shareholders	(109.9)	(386.8)	(433.9)
Non-controlling interest	SFr 3.6	SFr 3.9	SFr 3.7

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The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners.

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The amount of comprehensive income attributable to non-controlling interests. [Refer: Comprehensive income; Non-controlling interests]

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The amount of comprehensive income attributable to owners of the parent. [Refer: Comprehensive income]

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The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [domain]]

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