v3.26.1
Segmentation of key figures - Segment contribution and reconciliation to income before taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disclosure of operating segments [line items]        
Net sales $ 2,782 $ 2,577 $ 5,467 $ 5,028
Other revenues 41 19 62 41
Cost of net sales (1,130) (1,196) (2,293) (2,267)
Cost of other revenues (18) (12) (36) (31)
Selling, general & administration (964) (870) (1,846) (1,683)
Research & development (663) (245) (908) (467)
Other income 6 5 17 154
Other expense (43) (31) (160) (60)
Operating income 11 247 303 715
Interest expense (53) (51) (105) (100)
Other financial income & expense 0 4 2 13
Share of loss from associated companies (4) (1) (6) (15)
(Loss)/income before taxes (46) 199 194 613
Operating segments        
Disclosure of operating segments [line items]        
Net sales 2,782 2,577 5,467 5,028
Operating segments | Surgical        
Disclosure of operating segments [line items]        
Net sales 1,570 1,455 3,030 2,786
Other revenues 1 0 2 1
Cost of net sales (600) (553) (1,163) (1,049)
Cost of other revenues (1) 0 (2) (1)
Selling, general & administration (428) (372) (814) (728)
Research & development (150) (152) (294) (295)
Other income 0 0 0 0
Other expense 0 0 0 0
Operating income 392 378 759 714
Operating segments | Vision Care        
Disclosure of operating segments [line items]        
Net sales 1,212 1,122 2,437 2,242
Other revenues 40 19 60 40
Cost of net sales (393) (416) (816) (813)
Cost of other revenues (17) (12) (34) (30)
Selling, general & administration (455) (415) (869) (788)
Research & development (104) (90) (201) (162)
Other income 0 0 0 0
Other expense 0 0 0 0
Operating income 283 208 577 489
Not allocated to segments        
Disclosure of operating segments [line items]        
Net sales 0 0 0 0
Other revenues 0 0 0 0
Cost of net sales (137) (227) (314) (405)
Cost of other revenues 0 0 0 0
Selling, general & administration (81) (83) (163) (167)
Research & development (409) (3) (413) (10)
Other income 6 5 17 154
Other expense (43) (31) (160) (60)
Operating income (664) (339) (1,033) (488)
Interest expense (53) (51) (105) (100)
Other financial income & expense 0 4 2 13
Share of loss from associated companies $ (4) $ (1) $ (6) $ (15)