PROVISIONS - Narrative (Details)	6 Months Ended
Jun. 30, 2026
Classes of other provisions [abstract]
Majority of warranty provisions	1 year

Represents information pertaining to majority of warranty provision realized time period.

No definition available.

Name:	as_MajorityOfWarrantyProvisionRealizedTimePeriod
Namespace Prefix:	as_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration