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Contingencies (Details) $ in Millions | 1 Months Ended | 4 Months Ended
--- | --- | ---
Jul. 31, 2018 USD ($) | Jun. 30, 2015 action
Commitments and Contingencies Disclosure [Abstract] |  |
Number of putative class action complaints filed (over) | action |  | 50
Coopervision Litigation |  |
Loss Contingencies [Line Items] |  |
Litigation settlement amount | $ | $ 3.0 |

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