Dividend Payable (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Supplemental Cash Flow Elements [Abstract]
Return of capital to shareholders	$ 1,000,000,000
Common Stock, Dividends, Per Share, Declared	$ 0.06
Dividends Payable, Date of Record	Aug. 09, 2013
Dividends Payable, Date to be Paid	Sep. 10, 2013
Stock Repurchase Program, Authorized Amount	$ 500,000,000
Share repurchase program, completion date		Jun. 30, 2016