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Segmentation of key figures (Tables) | 6 Months Ended
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Jun. 30, 2022
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) |  | 2022 | 2021 |  | 2022 | 2021
Surgical |  |  |  |  |  |
Implantables |  | 444 |  | 387 |  |  | 899 |  | 731 |
Consumables |  | 644 |  | 620 |  |  | 1,245 |  | 1,155 |
Equipment/other |  | 208 |  | 199 |  |  | 411 |  | 397 |
Total Surgical net sales to third parties |  | 1,296 |  | 1,206 |  |  | 2,555 |  | 2,283 |
Vision Care |  |  |  |  |  |
Contact lenses |  | 547 |  | 535 |  |  | 1,104 |  | 1,044 |
Ocular health |  | 357 |  | 353 |  |  | 716 |  | 677 |
Total Vision Care net sales to third parties |  | 904 |  | 888 |  |  | 1,820 |  | 1,721 |
Total net sales to third parties |  | 2,200 |  | 2,094 |  |  | 4,375 |  | 4,004 |
Vision Care other revenues |  | 17 |  | 16 |  |  | 31 |  | 36 |
Total net sales and other revenues |  | 2,217 |  | 2,110 |  |  | 4,406 |  | 4,040 |
Segment contribution and reconciliation to income before taxes
|  | Three months ended June 30 |  | Six months ended June 30
($ millions) |  | 2022 | 2021 |  | 2022 | 2021
Segment contribution |  |  |  |  |  |
Surgical |  | 348 |  | 327 |  |  | 720 |  | 602 |
Vision Care |  | 147 |  | 146 |  |  | 317 |  | 292 |
Total segment contribution |  | 495 |  | 473 |  |  | 1,037 |  | 894 |
Not allocated to segments: |  |  |  |  |  |
Amortization of intangible assets |  | (162) |  | (143) |  |  | (324) |  | (283) |
Impairment charges on intangible assets |  | (61) |  | — |  |  | (61) |  | (45) |
General & administration (corporate) |  | (70) |  | (69) |  |  | (132) |  | (126) |
Separation costs |  | — |  | (6) |  |  | — |  | (16) |
Transformation costs |  | (9) |  | (15) |  |  | (24) |  | (26) |
Fair value adjustments to contingent consideration liabilities |  | 7 |  | — |  |  | 7 |  | — |
Past service costs for post-employment benefit plan amendments |  | — |  | — |  |  | — |  | 2 |
Other |  | — |  | (11) |  |  | (57) |  | (22) |
Operating income |  | 200 |  | 229 |  |  | 446 |  | 378 |
Interest expense |  | (31) |  | (30) |  |  | (60) |  | (61) |
Other financial income & expense |  | (22) |  | (8) |  |  | (39) |  | (17) |
Income before taxes |  | 147 |  | 191 |  |  | 347 |  | 300 |
Disclosure of geographical areas | Net sales by region(1)
| Three months ended June 30 |  | Six months ended June 30
($ millions unless indicated otherwise) | 2022 | 2021 |  | 2022 | 2021
United States | 990 |  | 45 | % | 958 |  | 46 | % |  | 1,929 |  | 44 | % | 1,793 |  | 45 | %
International | 1,210 |  | 55 | % | 1,136 |  | 54 | % |  | 2,446 |  | 56 | % | 2,211 |  | 55 | %
Net sales to third parties | 2,200 |  | 100 | % | 2,094 |  | 100 | % |  | 4,375 |  | 100 | % | 4,004 |  | 100 | %
(1) Net sales to third parties by location of third-party customer.

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