v3.3.1.900
Note 12 - Equity Equity, Subordinated Unit Conversion and ATM Program (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Aug. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Net proceeds from issuance of units (dollars) $ 142 $ 99 $ 1,478 $ 709
Subordinated units effective conversion date   May 16, 2014    
General partner units issued or outstanding (units)   1,900,515 1,631,448  
General partner’s ownership interest   2.00% 2.00% 2.00%
Partners' capital account, units converted     0  
Equity instrument regulatory filing date   Jun. 25, 2014    
Common units, aggregate value   $ 750 $ 200  
Public-owned common units        
Common units outstanding (units)   61,033,211    
Tesoro-owned common units        
Common units outstanding (units)   32,445,115    
General Partner        
Net proceeds from issuance of units (dollars)   $ 4 $ 29 $ 8
General partner units issued or outstanding (units)   1,900,515    
Partners' capital account, units converted     0  
Subordinated        
Net proceeds from issuance of units (dollars)   $ 0 $ 0 $ 9
Partners' capital account, units converted     (15,300,000)  
Tesoro        
Limited partnership, ownership interest   36.00%    
2014 ATM Program        
Units issued in equity offering (units)   819,513    
Net proceeds from issuance of units (dollars)   $ 46    
2015 ATM Program        
Units issued in equity offering (units)   1,137,533    
Net proceeds from issuance of units (dollars)   $ 59