Significant Accounting Policy Common Stock Rollforward (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Common Stock [Roll Forward]
Common Stock, Shares, Outstanding	229,145,736	228,094,712	227,056,212
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	1,119,727	1,051,024	1,038,500
Common Stock, Shares, Outstanding	230,265,463	229,145,736	228,094,712