Aggregate dividends declared during the period for each share of common stock outstanding.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Stockholders' Equity, Dividends (Details) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Stockholders' Equity [Abstract]
Shares outstanding (in shares)	28.9	28.9	29.0
Dividends [Abstract]
Dividends declared (in dollars per share)	$ 0.02	$ 0.02
Quarterly Dividend Declared in Q1 2019 [Member]
Dividends [Abstract]
Dividends declared (in dollars per share)	$ 0.02
Dividend payment date	Apr. 30, 2019
Dividend record date	Apr. 16, 2019
Quarterly Dividend Declared in Q1 2018 [Member]
Dividends [Abstract]
Dividends declared (in dollars per share)		$ 0.02
Dividend payment date		Mar. 27, 2018
Dividend record date		Mar. 13, 2018