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Commitments and Contingencies (Details 4) - Flood, Crude Oil Discharge and Insurance - USD ($)
$ in Millions
Jul. 02, 2013
Apr. 19, 2013
Oct. 25, 2010
Litigation Matters      
Reimbursement of oversight cost     $ 1.8
CRRM      
Litigation Matters      
Environmental civil penalty for CWA violations   $ 0.6  
Amount of reimbursement agreed for oversight cost   $ 1.7  
Environmental civil penalty for Risk Management Program violations $ 0.3