v3.5.0.2
Note 12 - Equity Equity, Subordinated Unit Conversion and ATM Program (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended 12 Months Ended
Aug. 24, 2015
Aug. 31, 2014
Sep. 30, 2016
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)     1,492,637 1,137,533    
Net proceeds from issuance of units (dollars)     $ 72 $ 59    
Equity instrument regulatory filing date Aug. 24, 2015          
Common units, aggregate value $ 750