Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Statement of Stockholders' Equity [Abstract] | |||||
| Treasury shares withheld for payment of taxes, weighted average price per share (usd per share) | [1] | $ 50.20 | $ 54.90 | $ 48.31 | |
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