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Shareholders' Equity - Narrative (Details) | 1 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) shares | Dec. 31, 2019 USD ($) SFr / shares | Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 SFr / shares | Dec. 31, 2018 USD ($) $ / shares
Stockholders' Equity Note [Abstract] |  |  |  |  |
Authorized amount in buyback program | $ 250,000,000.0 |  |  |  |
Shares authorized to be repurchased (in shares) | shares | 17,300,000 |  |  |  |
Period to complete share repurchase program | 3 years |  |  |  |
Amount still available for repurchase |  | $ 172,400,000 | $ 172,400,000 |  |
Cash dividends per share (in dollars/CHF per share) | (per share) |  | $ 0.73 | $ 0.74 | SFr 0.67 | $ 0.69
Payment of cash dividends |  |  | $ 124,180,000 |  | $ 113,971,000

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