Variable Interest Entities (Schedule of Variable Interest Entities) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 699	$ 227
Prepayments and other current assets	100	80
Plant, property, and equipment, net	25,877	25,072
Other non-current assets	263	357
Total Assets	34,355	33,517
Non-current portion of finance leases	79	62
Asset retirement obligations	769	771
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	22	28
Accounts receivable	4	3
Prepayments and other current assets	4	4
Plant, property, and equipment, net	1,045	1,064
Other non-current assets	3	3
Total Assets	1,078	1,102
Accounts payable	8	12
Non-current portion of finance leases	23	23
Asset retirement obligations	33	32
Total liabilities	$ 64	$ 67