Equity (Common Stock - Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Treasury Stock, Shares, Acquired	20,176,185	80,662
Treasury Stock, Value, Acquired, Cost Method	$ 1,000	$ 4
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 261