v2.4.0.8
Commitments And Contingencies (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Loss Contingencies [Line Items]          
Liabilities recognized for estimated environmental costs $ 34,666,000   $ 34,666,000   $ 38,486,000
Estimated environmental liabilities, years     10 years    
Environmental expenses 100,000 (9,400,000) 400,000 (8,700,000)  
Receivables from insurance carriers related to environmental matters 4,600,000   4,600,000   4,800,000
Accounts Receivable [Member]
          
Loss Contingencies [Line Items]          
Receivables from insurance carriers related to environmental matters 2,100,000   2,100,000   2,100,000
Other Noncurrent Assets [Member]
          
Loss Contingencies [Line Items]          
Receivables from insurance carriers related to environmental matters 2,500,000   2,500,000   2,700,000
Clean Air Act Section 185 [Member]
          
Loss Contingencies [Line Items]          
Loss Contingency, Loss in Period       (10,600,000)  
Texas and New Mexico [Member]
          
Loss Contingencies [Line Items]          
Pipeline Length 36   36    
Net Investment in Direct Financing and Sales Type Leases $ 36,400,000   $ 36,400,000