Subsequent Events Subsequent Events (Details) (Dividend declared, USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended
	Jun. 05, 2015	May 22, 2015	Apr. 23, 2015	Jun. 05, 2015
Dividend declared
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Cash Paid			$ 0.11
Quarterly dividend, date declared			Apr. 23, 2015
Quarterly dividend, date to be paid	Jun. 05, 2015
Quarterly dividend, date of record		May 22, 2015
Quarterly dividend, amount declared	$ 15.4			$ 15.4