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Fair Value Measurements, Recurring (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets |  |
Investments in AFS debt securities |  | $ 0
Cash and Cash Equivalents [Member] |  |
Assets |  |
Investments in AFS debt securities | $ 125,000,000 |
Prepaid Expenses and Other [Member] |  |
Assets |  |
Investments in AFS debt securities | 96,000,000 |
Fair Value, Recurring [Member] |  |
Assets |  |
Investments in AFS debt securities | 221,000,000 |
Total gross fair value, assets | 1,133,000,000 | 616,000,000
Effect of counterparty netting | (705,000,000) | (444,000,000)
Effect of cash collateral netting | (8,000,000) | (15,000,000)
Net carrying value on balance sheet, assets | 420,000,000 | 157,000,000
Liabilities |  |
Blending program obligations | 55,000,000 | 57,000,000
Total gross fair value, liabilities | 766,000,000 | 544,000,000
Effect of counterparty netting | (705,000,000) | (444,000,000)
Effect of cash collateral netting | 0 | (28,000,000)
Net carrying value on Balance Sheet, liabilities | 61,000,000 | 72,000,000
Fair Value, Recurring [Member] | Assets Held in Trust [Member] |  |
Assets |  |
Investments of certain benefit plans | 78,000,000 | 89,000,000
Fair Value, Recurring [Member] | Commodity Contracts [Member] |  |
Assets |  |
Derivative contracts | 830,000,000 | 522,000,000
Effect of counterparty netting | (705,000,000) | (444,000,000)
Effect of cash collateral netting | (8,000,000) | (15,000,000)
Derivative contracts, net assets | 117,000,000 | 63,000,000
Cash collateral received not offset | 0 | 0
Liabilities |  |
Derivative contracts | 705,000,000 | 472,000,000
Effect of counterparty netting | (705,000,000) | (444,000,000)
Effect of cash collateral netting | 0 | (28,000,000)
Derivative contracts, net liabilities | 0 | 0
Cash collateral paid not offset | (149,000,000) | (41,000,000)
Fair Value, Recurring [Member] | Physical Purchase Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting | 4,000,000 | 4,000,000
Liabilities |  |
Derivative contracts, not subject to netting | 4,000,000 | 5,000,000
Fair Value, Recurring [Member] | Foreign Currency Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting |  | 1,000,000
Liabilities |  |
Derivative contracts, not subject to netting | 2,000,000 | 10,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets |  |
Investments in AFS debt securities | 56,000,000 |
Total gross fair value, assets | 958,000,000 | 606,000,000
Liabilities |  |
Blending program obligations | 0 | 0
Total gross fair value, liabilities | 707,000,000 | 482,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Assets Held in Trust [Member] |  |
Assets |  |
Investments of certain benefit plans | 72,000,000 | 83,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commodity Contracts [Member] |  |
Assets |  |
Derivative contracts | 830,000,000 | 522,000,000
Liabilities |  |
Derivative contracts | 705,000,000 | 472,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Physical Purchase Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting | 0 | 0
Liabilities |  |
Derivative contracts, not subject to netting | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Currency Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting |  | 1,000,000
Liabilities |  |
Derivative contracts, not subject to netting | 2,000,000 | 10,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets |  |
Investments in AFS debt securities | 165,000,000 |
Total gross fair value, assets | 169,000,000 | 4,000,000
Liabilities |  |
Blending program obligations | 55,000,000 | 57,000,000
Total gross fair value, liabilities | 59,000,000 | 62,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Assets Held in Trust [Member] |  |
Assets |  |
Investments of certain benefit plans | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity Contracts [Member] |  |
Assets |  |
Derivative contracts | 0 | 0
Liabilities |  |
Derivative contracts | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Physical Purchase Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting | 4,000,000 | 4,000,000
Liabilities |  |
Derivative contracts, not subject to netting | 4,000,000 | 5,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Currency Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting |  | 0
Liabilities |  |
Derivative contracts, not subject to netting | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Assets |  |
Investments in AFS debt securities | 0 |
Total gross fair value, assets | 6,000,000 | 6,000,000
Liabilities |  |
Blending program obligations | 0 | 0
Total gross fair value, liabilities | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Assets Held in Trust [Member] |  |
Assets |  |
Investments of certain benefit plans | 6,000,000 | 6,000,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commodity Contracts [Member] |  |
Assets |  |
Derivative contracts | 0 | 0
Liabilities |  |
Derivative contracts | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Physical Purchase Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting | 0 | 0
Liabilities |  |
Derivative contracts, not subject to netting | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Currency Contracts [Member] |  |
Assets |  |
Derivative contracts, not subject to netting |  | 0
Liabilities |  |
Derivative contracts, not subject to netting | $ 0 | $ 0

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