Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Stock Options Excluded From Diluted Common Shares Outstanding Calculation		5,100,000	5,200,000	4,300,000	7,400,000
Treasury Stock, Shares, Acquired				325,400
Treasury Stock, Value, Acquired, Cost Method				$ 25.1
Common stock dividend (in dollars per share)		$ 0.83	$ 0.83	$ 1.66	$ 1.66
Parent Company [Member]
Equity [Abstract]
Shares, Issued		610,305		610,305
Subsequent Event [Member]
Equity [Abstract]
Common stock dividend (in dollars per share)	$ 0.83