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DERIVATIVES Part 5 (Details) - Commodity Contract [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation Calculation [Roll Forward]    
Beginning Balance $ 2 $ 0
Realized gain (loss) in sales revenue 4 1
Change in unrealized gain (loss) in Other Comprehensive Income (2) 2
Purchases, sales and settlements (4) (1)
Transfers (out) in of Level 3 0 0
Ending Balance $ 0 $ 2