Equity (Share Activity) (Narrative) (Details) - 2014 Share Repurchase Program [Member] - USD ($) shares in Thousands, $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Equity, Treasury Stock [Line Items]
Share repurchase program, amount authorized, value			$ 100
Treasury stock acquired, value	$ 100
Common Stock [Member]
Equity, Treasury Stock [Line Items]
Common stock repurchases (in shares)		5,218