v3.7.0.1
Assets and Liabilities with Recurring Fair Value Measurements Fair Value Hierarchy (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents [1] $ 166 $ 153
Commodity futures contracts 1,259 1,542
Commodity forward contracts [2] 761 697
Interest Rate Derivative Assets, Fair Value 37 29
Total assets 2,223 2,421
Commodity futures contracts 1,298 1,570
Commodity forward contracts [2] 470 478
Interest Rate Derivative Liabilities At Fair Value 55 58
Liabilities, Fair Value Disclosure 1,823 2,106
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents [1] 166 153
Commodity futures contracts 1,259 1,542
Commodity forward contracts [2] 0 0
Interest Rate Derivative Assets, Fair Value 0 0
Total assets 1,425 1,695
Commodity futures contracts 1,298 1,570
Commodity forward contracts [2] 0 0
Interest Rate Derivative Liabilities At Fair Value 0 0
Liabilities, Fair Value Disclosure 1,298 1,570
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents [1] 0 0
Commodity futures contracts 0 0
Commodity forward contracts [2] 359 231
Interest Rate Derivative Assets, Fair Value 37 29
Total assets 396 260
Commodity futures contracts 0 0
Commodity forward contracts [2] 410 411
Interest Rate Derivative Liabilities At Fair Value 55 58
Liabilities, Fair Value Disclosure 465 469
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents [1] 0 0
Commodity futures contracts 0 0
Commodity forward contracts [2] 402 466
Interest Rate Derivative Assets, Fair Value 0 0
Total assets 402 466
Commodity futures contracts 0 0
Commodity forward contracts [2] 60 67
Interest Rate Derivative Liabilities At Fair Value 0 0
Liabilities, Fair Value Disclosure $ 60 $ 67
[1] As of March 31, 2017 and December 31, 2016, we had cash equivalents of $36 million and $26 million included in cash and cash equivalents and $130 million and $127 million included in restricted cash, respectively.
[2] Includes OTC swaps and options and retail contracts.