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Equity (Stock Repurchase Program) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2019
Equity [Abstract] |  |
Stock repurchased and retired during period, shares | 0.8 | 7.3
Common stock value acquired including acquisition costs | $ 8.3 | $ 74.6
Average cost per share (in dollars per share) | $ 10.22 | $ 10.16
Shares repurchased (in shares) |  | $ 34.2

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- Definition Common Stock Value Acquired Including Acquisition Costs + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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