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Segmentation of key figures - Net sales by segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | $ 2,094 | $ 1,198 | $ 4,004 | $ 3,020
Surgical |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 1,206 | 602 | 2,283 | 1,586
Surgical | Implantables |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 387 | 176 | 731 | 486
Surgical | Consumables |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 620 | 320 | 1,155 | 839
Surgical | Equipment/other |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 199 | 106 | 397 | 261
Vision Care |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 888 | 596 | 1,721 | 1,434
Vision Care | Contact lenses |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | 535 | 329 | 1,044 | 831
Vision Care | Ocular health |  |  |  |
Disclosure of products and services [line items] |  |  |  |
Net sales to third parties | $ 353 | $ 267 | $ 677 | $ 603

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Paragraph 113 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_113_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_114&doctype=Standard -URIDate 2020-01-01 + Details
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