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v3.21.1

Variable Interest Entities (Consolidated Information of Variable Interest Entity) (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Cash and cash equivalents | $ 496 | $ 168
Accounts receivable | 839 | 863
Prepayments and other current assets | 145 | 112
Plant, property, and equipment, net | 21,207 | 21,039
Total Assets | 29,723 | 29,666
Accounts payable | 538 | 671
Asset retirement obligations | 564 | 553
Variable Interest Entity, Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
Cash and cash equivalents | 8 | 7
Accounts receivable | 9 | 5
Prepayments and other current assets | 1 | 1
Plant, property, and equipment, net | 686 | 692
Total Assets | 704 | 705
Accounts payable | 6 | 3
Asset retirement obligations | 19 | 19
Total liabilities | $ 25 | $ 22

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