Quarterly report pursuant to Section 13 or 15(d)

Other Non-Current Assets - Equity Method Investments (Details)

v3.19.2
Other Non-Current Assets - Equity Method Investments (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
mi
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
May 31, 2018
USD ($)
Investment [Line Items]            
Equity method investment $ 124,000,000   $ 124,000,000   $ 94,000,000  
Other revenues 2,292,000,000 $ 1,543,000,000 4,553,000,000 $ 3,785,000,000    
Accounts and other receivables 433,000,000   433,000,000   585,000,000  
Midship Holdings [Member]            
Investment [Line Items]            
Equity method investment 117,000,000   117,000,000   85,000,000  
O&M Services [Member] | Midship Pipeline [Member] | Service Agreements [Member]            
Investment [Line Items]            
Other revenues 3,000,000 $ 3,000,000 7,000,000 $ 4,000,000    
Accounts and other receivables 2,000,000   $ 2,000,000   $ 4,000,000  
CCL [Member] | Midship Pipeline [Member] | Natural Gas Transportation Agreement [Member]            
Investment [Line Items]            
Long-term Purchase Commitment, Period     10 years      
Midship Pipeline [Member]            
Investment [Line Items]            
Length of Natural Gas Pipeline | mi     200      
Midship Pipeline [Member] | CCL [Member] | Midship Pipeline Letter of Credit [Member]            
Investment [Line Items]            
Letter of Credit, Maximum Borrowing Capacity           $ 16,000,000
Letters of credit issued $ 0   $ 0