Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Schedule of Common Stock Outstanding Roll Forward (Details)

v3.3.1.900
Stockholders' Equity Schedule of Common Stock Outstanding Roll Forward (Details) - shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Class of Stock [Line Items]      
Beginning balance, shares 366,395,920    
Repurchase of common stock, shares (13,664,300)   (2,450,700)
Ending balance, shares 353,906,807 366,395,920  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,290,609    
Common Stock [Member]      
Class of Stock [Line Items]      
Beginning balance, shares 366,395,920 364,935,168 298,813,258
Stock Issued During Period, Shares, Period Increase (Decrease) 69,826 57,218 67,511,609
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures 1,105,361 1,403,534 1,061,001
Repurchase of common stock, shares (13,664,300) 0 (2,450,700)
Ending balance, shares 353,906,807 366,395,920 364,935,168