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v3.19.3.a.u2

Share capital and earnings/(loss) per share (Details) SFr / shares in Units, SFr in Thousands |  |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 19, 2019 CHF (SFr) SFr / shares shares | Apr. 09, 2019 shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2017 shares | Dec. 31, 2019 CHF (SFr) SFr / shares shares
Earnings per share [abstract] |  |  |  |  |  |  |  |
Share capital |  |  |  | $ 20,000,000 | $ 20,000,000 | $ 0 |  | SFr 20,000
Number of shares issued |  |  | 488,700,000 | 491,700,000 | 491,700,000 |  |  | 491,700,000
Nominal value (in CHF per share) | SFr / shares |  | SFr 0.04 |  |  |  |  |  | SFr 0.04
Number of shares distributed in spin-off (in shares) |  |  | 488,200,000 |  |  |  |  |
Increase (decrease) in share capital authorised (in shares) | SFr |  | SFr 120 |  |  |  |  |  |
Number of additional shares authorized (in shares) |  | 3,000,000.0 |  |  |  |  |  |
Increase (decrease) in number of shares outstanding (in shares) |  |  |  |  | 100,000 |  |  |
Number of shares outstanding (in shares) |  |  |  | 488,300,000 | 488,300,000 |  |  | 488,300,000
Number of shares held in treasury (in shares) |  |  |  | 3,400,000 | 3,400,000 |  |  | 3,400,000
Number of shares allowed to be used to fulfill future vesting (in shares) |  |  |  | 3,000,000.0 | 3,000,000.0 |  |  | 3,000,000.0
Dividends | $ |  |  |  | $ 0 |  |  |  |
Adjusted weighted average number of ordinary shares outstanding (in shares) | [1] |  |  |  | 488,200,000 | 488,200,000 | 488,200,000 |
Antidilutive securities excluded from computation (in shares) |  |  |  |  | 1,900,000 |  |  |
[1] | For periods prior to the Spin-off, the denominator for basic and diluted earnings per share was calculated using 488.2 million shares of common stock distributed in the Spin-off.

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