Equity (Share Activity) (Narrative) (Details) - 2014 Share Repurchase Program [Member] - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Equity, Treasury Stock [Line Items]
Share repurchase program, amount authorized, value			$ 100.0
Treasury stock acquired, value		$ 90.7
Subsequent Event [Member]
Equity, Treasury Stock [Line Items]
Treasury stock acquired, value	$ 9.3
Common Stock [Member]
Equity, Treasury Stock [Line Items]
Common stock repurchases (in shares)		4,737,000	0
Common Stock [Member] | Subsequent Event [Member]
Equity, Treasury Stock [Line Items]
Common stock repurchases (in shares)	500,000