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Equity - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Equity [Abstract]
Shares repurchased and retired during period (in shares)	6.2	0.8
Common stock value repurchased including acquisition costs	$ 58.3	$ 8.3
Average cost per share of repurchased shares (in dollars per share)	$ 9.42	$ 10.22
Stock repurchase program remaining authorized amount	$ 22.5

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- Definition

Common Stock Acquired, Average Cost Per Share

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- Definition

Common Stock Value Acquired Including Acquisition Costs

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- Definition

Amount remaining of a stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

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-Topic 210
-SubTopic 10
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