Subsequent Event (Details) (Subsequent Event, USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended
	Sep. 20, 2013	Sep. 18, 2013 Dividend Declared
Subsequent Event [Line Items]
Dividend declared date		Sep. 18, 2013
Cash dividend declared, per share		$ 0.55
Dividend payable date		Nov. 01, 2013
Dividends payable date of record		Oct. 10, 2013
Expected employee termination benefits and other costs	$ 10.0