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v3.5.0.2

Fair Value Measurements, Recurring (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Assets: |  |
Investments of certain benefit plans | $ 68 | $ 75
Total gross fair value, assets | 848 | 760
Effect of Counterparty Netting | (706) | (557)
Effect of Cash Collateral Netting | 0 | (12)
Net Carrying Value on Balance Sheet, Assets | 142 | 191
Liabilities: |  |
Environmental credit obligations | 63 | 2
Total gross fair value, liabilities | 798 | 565
Effect of Counterparty Netting | (706) | (557)
Effect of Cash Collateral Netting | (18) | 0
Net Carrying Value on Balance Sheet, Liabilities | 74 | 8
Commodity Contracts [Member] |  |
Assets: |  |
Derivative contracts | 778 | 682
Effect of Counterparty Netting | (706) | (557)
Effect of Cash Collateral Netting | 0 | (12)
Derivative contracts, net assets | 72 | 113
Cash Collateral Received Not Offset | 0 | 0
Liabilities: |  |
Derivative contracts | 724 | 557
Effect of Counterparty Netting | (706) | (557)
Effect of Cash Collateral Netting | (18) | 0
Derivative contracts, net liabilities | 0 | 0
Cash Collateral Paid Not Offset | (86) | (31)
Physical Purchase Contracts [Member] |  |
Assets: |  |
Derivative contracts | 1 |
Derivative contracts, net assets | 1 |
Liabilities: |  |
Derivative contracts | 11 | 6
Derivative contracts, net liabilities | 11 | 6
Foreign Currency Contracts [Member] |  |
Assets: |  |
Derivative contracts | 1 | 3
Derivative contracts, net assets | 1 | 3
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Investments of certain benefit plans | 57 | 64
Total gross fair value, assets | 811 | 716
Liabilities: |  |
Environmental credit obligations | 0 | 0
Total gross fair value, liabilities | 706 | 522
Fair Value, Inputs, Level 1 [Member] | Commodity Contracts [Member] |  |
Assets: |  |
Derivative contracts | 753 | 649
Liabilities: |  |
Derivative contracts | 706 | 522
Fair Value, Inputs, Level 1 [Member] | Physical Purchase Contracts [Member] |  |
Assets: |  |
Derivative contracts | 0 |
Liabilities: |  |
Derivative contracts | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Foreign Currency Contracts [Member] |  |
Assets: |  |
Derivative contracts | 1 | 3
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Investments of certain benefit plans | 0 | 0
Total gross fair value, assets | 26 | 33
Liabilities: |  |
Environmental credit obligations | 63 | 2
Total gross fair value, liabilities | 92 | 43
Fair Value, Inputs, Level 2 [Member] | Commodity Contracts [Member] |  |
Assets: |  |
Derivative contracts | 25 | 33
Liabilities: |  |
Derivative contracts | 18 | 35
Fair Value, Inputs, Level 2 [Member] | Physical Purchase Contracts [Member] |  |
Assets: |  |
Derivative contracts | 1 |
Liabilities: |  |
Derivative contracts | 11 | 6
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Contracts [Member] |  |
Assets: |  |
Derivative contracts | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Investments of certain benefit plans | 11 | 11
Total gross fair value, assets | 11 | 11
Liabilities: |  |
Environmental credit obligations | 0 | 0
Total gross fair value, liabilities | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Commodity Contracts [Member] |  |
Assets: |  |
Derivative contracts | 0 | 0
Liabilities: |  |
Derivative contracts | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Physical Purchase Contracts [Member] |  |
Assets: |  |
Derivative contracts | 0 |
Liabilities: |  |
Derivative contracts | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Contracts [Member] |  |
Assets: |  |
Derivative contracts | $ 0 | $ 0

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