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Equity-based compensation - Equity-based compensation activity (Details) shares in Thousands | 12 Months Ended
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Dec. 31, 2018 shares $ / shares
Novartis equity plan select, outside North America [member] |
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
Options outstanding at January 1 (in shares) | shares | 500
Sold or exercised (in shares) | shares | (100)
Options outstanding at December 31 (in shares) | shares | 426
Exercisable (in shares) | shares | 400
Options outstanding at January 1, weighted average exercise price (in dollars per share) | $ 61.4
Sold or exercised, weighted average exercise price (in dollars per share) | 59.7
Options outstanding at December 31, weighted average exercise price (in dollars per share) | 61.1
Exercisable, weighted average exercise price (in dollars per share) | 61.4
Options outstanding at January 1, weighted average exercise price | 24.7
Sold or exercised, weighted average exercise price | 29.1
Exercisable, weighted average exercise price | 26.5
Options outstanding at December 31, weighted average exercise price | $ 26.5
Novartis equity plan select, North America [member] |
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
Options outstanding at January 1 (in shares) | shares | 1,800
Sold or exercised (in shares) | shares | (500)
Options outstanding at December 31 (in shares) | shares | 1,288
Exercisable (in shares) | shares | 1,300
Options outstanding at January 1, weighted average exercise price (in dollars per share) | $ 62.6
Sold or exercised, weighted average exercise price (in dollars per share) | 62.4
Options outstanding at December 31, weighted average exercise price (in dollars per share) | 62.5
Exercisable, weighted average exercise price (in dollars per share) | 62.6
Options outstanding at January 1, weighted average exercise price | 21.4
Sold or exercised, weighted average exercise price | 25.8
Exercisable, weighted average exercise price | 23.2
Options outstanding at December 31, weighted average exercise price | $ 23.2

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- Definition The number of share options outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_d&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_b_i&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_b_vi&doctype=Standard -URIDate 2019-03-27 + Details
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