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Share-Based Payments (Details 11) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Shares issued under ESPP | 6,200,000 |  |
2015 ESPP |  |  |
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |  |
Shares issued under ESPP | 204,000 | 170,000 | 167,000
Cash received under ESPP | $ 40.4 | $ 40.5 | $ 39.8

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