v3.5.0.2
Equity, Units Rollforward (Details) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Partners' Capital, Units      
Balance at period beginning 81,700,000.0 55,500,000.0 36,500,000.0
Unit-based compensation awards 100,000.0 100,000.0  
Partners' capital account, units converted   0  
Balance at period end 95,400,000.0 81,700,000.0 55,500,000.0
Common      
Partners' Capital, Units      
Balance at period beginning 80,100,000.0 39,100,000.0 20,500,000.0
Unit-based compensation awards 100,000.0 100,000.0  
Partners' capital account, units converted   15,300,000  
Balance at period end 93,500,000.0 80,100,000.0 39,100,000.0
Subordinated      
Partners' Capital, Units      
Balance at period beginning 0 15,300,000.0 15,300,000.0
Unit-based compensation awards 0 0  
Partners' capital account, units converted   15,300,000  
Balance at period end 0 0 15,300,000.0
General Partner      
Partners' Capital, Units      
Balance at period beginning 1,600,000.0 1,100,000.0 700,000.0
Unit-based compensation awards 0 0  
Partners' capital account, units converted   0  
Balance at period end 1,900,000.0 1,600,000.0 1,100,000.0
October 2012 Equity Offering      
Partners' Capital, Units      
Units issued in equity offering (units)     1,300,000.0
October 2012 Equity Offering | Common      
Partners' Capital, Units      
Units issued in equity offering (units)     1,100,000.0
October 2012 Equity Offering | Subordinated      
Partners' Capital, Units      
Units issued in equity offering (units)     0
October 2012 Equity Offering | General Partner      
Partners' Capital, Units      
Units issued in equity offering (units)     200,000.0
January 2013 Equity Offering      
Partners' Capital, Units      
Units issued in equity offering (units)   200,000.0  
January 2013 Equity Offering | Common      
Partners' Capital, Units      
Units issued in equity offering (units)   200,000.0  
January 2013 Equity Offering | Subordinated      
Partners' Capital, Units      
Units issued in equity offering (units)   0  
January 2013 Equity Offering | General Partner      
Partners' Capital, Units      
Units issued in equity offering (units)   0  
November 2013 Equity Offering      
Partners' Capital, Units      
Units issued in equity offering (units)   2,100,000.0  
November 2013 Equity Offering | Common      
Partners' Capital, Units      
Units issued in equity offering (units)   2,100,000.0  
November 2013 Equity Offering | Subordinated      
Partners' Capital, Units      
Units issued in equity offering (units)   0  
November 2013 Equity Offering | General Partner      
Partners' Capital, Units      
Units issued in equity offering (units)   0  
ATM Program      
Partners' Capital, Units      
Units issued in equity offering (units) 1,900,000.0    
ATM Program | Common      
Partners' Capital, Units      
Units issued in equity offering (units) 1,900,000.0    
ATM Program | Subordinated      
Partners' Capital, Units      
Units issued in equity offering (units) 0    
ATM Program | General Partner      
Partners' Capital, Units      
Units issued in equity offering (units) 0    
QEP Midstream Partners LP | Subordinated      
Partners' Capital, Units      
Units issued in equity offering (units) [1] 0    
Martinez Marine Terminal Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions     10,000,000
Martinez Marine Terminal Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions     9,800,000.0
Martinez Marine Terminal Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions     0
Martinez Marine Terminal Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions     200,000.0
Long Beach Assets Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions     1,400,000.0
Long Beach Assets Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions     1,400,000.0
Long Beach Assets Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions     0
Long Beach Assets Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions     0
Anacortes Rail Facility Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions     6,300,000.0
Anacortes Rail Facility Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions     6,300,000.0
Anacortes Rail Facility Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions     0
Anacortes Rail Facility Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions     0
Los Angeles Terminal Assets Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions   300,000.0  
Los Angeles Terminal Assets Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions   300,000.0  
Los Angeles Terminal Assets Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions   0  
Los Angeles Terminal Assets Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions   0  
Los Angeles Logistics Assets Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions   23,500,000.0  
Los Angeles Logistics Assets Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions   23,000,000.0  
Los Angeles Logistics Assets Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions   0  
Los Angeles Logistics Assets Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions   500,000.0  
West Coast Logistics Assets Acquisition      
Partners' Capital, Units      
Units issued in the acquisitions [2] 4,600,000.0    
West Coast Logistics Assets Acquisition | Common      
Partners' Capital, Units      
Units issued in the acquisitions [2] 4,300,000.0    
West Coast Logistics Assets Acquisition | Subordinated      
Partners' Capital, Units      
Units issued in the acquisitions [2] 0    
West Coast Logistics Assets Acquisition | General Partner      
Partners' Capital, Units      
Units issued in the acquisitions [2] 300,000.0    
QEP Midstream Partners LP      
Partners' Capital, Units      
Units issued in equity offering (units) [1] 7,100,000    
QEP Midstream Partners LP | Common      
Partners' Capital, Units      
Units issued in equity offering (units) [1] 7,100,000    
QEP Midstream Partners LP | General Partner      
Partners' Capital, Units      
Units issued in equity offering (units) [1] 0    
[1] On July 22, 2015, we issued common units to QEPM unitholders upon completion of the Merger discussed in Note 2.
[2] On November 12, 2015, we issued common units to Tesoro and TLGP in connection with the completion of the LA Storage and Handling Assets discussed in Note 2.