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Segmentation of key figures (Tables) | 6 Months Ended
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Jun. 30, 2023
Operating Segments [Abstract] |
Disclosure of operating segments | Net sales and other revenues by segment
|  | Three months ended June 30 |  | Six months ended June 30
($ millions) |  | 2023 | 2022 |  | 2023 | 2022
Surgical |  |  |  |  |  |
Implantables |  | 437 |  | 444 |  |  | 864 |  | 899 |
Consumables |  | 714 |  | 644 |  |  | 1,370 |  | 1,245 |
Equipment/other |  | 231 |  | 208 |  |  | 452 |  | 411 |
Total Surgical net sales to third parties |  | 1,382 |  | 1,296 |  |  | 2,686 |  | 2,555 |
Vision Care |  |  |  |  |  |
Contact lenses |  | 594 |  | 547 |  |  | 1,209 |  | 1,104 |
Ocular health |  | 426 |  | 357 |  |  | 840 |  | 716 |
Total Vision Care net sales to third parties |  | 1,020 |  | 904 |  |  | 2,049 |  | 1,820 |
Total net sales to third parties |  | 2,402 |  | 2,200 |  |  | 4,735 |  | 4,375 |
Vision Care other revenues |  | 20 |  | 17 |  |  | 39 |  | 31 |
Total net sales and other revenues |  | 2,422 |  | 2,217 |  |  | 4,774 |  | 4,406 |
Segment contribution and reconciliation to income before taxes
|  | Three months ended June 30 |  | Six months ended June 30
($ millions) |  | 2023 | 2022 |  | 2023 | 2022
Segment contribution |  |  |  |  |  |
Surgical |  | 407 |  | 348 |  |  | 788 |  | 720 |
Vision Care |  | 174 |  | 147 |  |  | 373 |  | 317 |
Total segment contribution |  | 581 |  | 495 |  |  | 1,161 |  | 1,037 |
Not allocated to segments: |  |  |  |  |  |
Amortization of intangible assets |  | (187) |  | (162) |  |  | (377) |  | (324) |
Impairment charges on intangible assets |  | — |  | (61) |  |  | — |  | (61) |
General & administration (corporate) |  | (74) |  | (70) |  |  | (142) |  | (132) |
Transformation costs |  | (26) |  | (9) |  |  | (52) |  | (24) |
Fair value adjustments to contingent consideration liabilities |  | — |  | 7 |  |  | — |  | 7 |
Integration related costs |  | (8) |  | (4) |  |  | (14) |  | (9) |
Other |  | (16) |  | 4 |  |  | (38) |  | (48) |
Operating income |  | 270 |  | 200 |  |  | 538 |  | 446 |
Interest expense |  | (48) |  | (31) |  |  | (95) |  | (60) |
Other financial income & expense |  | (9) |  | (22) |  |  | (17) |  | (39) |
Income before taxes |  | 213 |  | 147 |  |  | 426 |  | 347 |
Disclosure of geographical areas | Net sales by region(1)
| Three months ended June 30 |  | Six months ended June 30
($ millions unless indicated otherwise) | 2023 | 2022 |  | 2023 | 2022
United States | 1,105 |  | 46 | % | 990 |  | 45 | % |  | 2,183 |  | 46 | % | 1,929 |  | 44 | %
International | 1,297 |  | 54 | % | 1,210 |  | 55 | % |  | 2,552 |  | 54 | % | 2,446 |  | 56 | %
Net sales to third parties | 2,402 |  | 100 | % | 2,200 |  | 100 | % |  | 4,735 |  | 100 | % | 4,375 |  | 100 | %
(1) Net sales to third parties by location of third-party customer.

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