v3.25.2
CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Schedule of Condensed Consolidating Balance Sheets (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
ScheduleOfCondensedFinancialStatements [Line Items]            
Total current assets $ 728   $ 1,024      
Total property, plant and equipment, net 5,560   5,680      
Investments in consolidated subsidiaries 0   0      
Deferred tax asset 33   73      
Investment in unconsolidated subsidiaries 93   86      
Other assets 298   272      
TOTAL ASSETS 6,712   7,135      
Total current liabilities 928   980      
Long-term debt 888   1,132      
Asset retirement obligations 969   995      
Other long-term liabilities 335   377      
Deferred tax liability 185   113      
Amounts due to (from) affiliates 0   0      
Total equity 3,407 $ 3,516 3,538 $ 2,052 $ 2,093 $ 2,219
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 6,712   7,135      
Eliminations            
ScheduleOfCondensedFinancialStatements [Line Items]            
Total current assets 0   0      
Total property, plant and equipment, net 0   0      
Investments in consolidated subsidiaries (21,836)   (19,887)      
Deferred tax asset 0   0      
Investment in unconsolidated subsidiaries 0   0      
Other assets 0   0      
TOTAL ASSETS (21,836)   (19,887)      
Total current liabilities 0   0      
Long-term debt 0   0      
Asset retirement obligations 0   0      
Other long-term liabilities 0   0      
Deferred tax liability 0   0      
Amounts due to (from) affiliates 0   0      
Total equity (21,836)   (19,887)      
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY (21,836)   (19,887)      
Parent | Reportable Legal Entities            
ScheduleOfCondensedFinancialStatements [Line Items]            
Total current assets 102   437      
Total property, plant and equipment, net 20   14      
Investments in consolidated subsidiaries 5,521   4,869      
Deferred tax asset 33   73      
Investment in unconsolidated subsidiaries 0   0      
Other assets 112   113      
TOTAL ASSETS 5,788   5,506      
Total current liabilities 272   224      
Long-term debt 888   1,132      
Asset retirement obligations 0   0      
Other long-term liabilities 101   114      
Deferred tax liability 185   113      
Amounts due to (from) affiliates 935   385      
Total equity 3,407   3,538      
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 5,788   5,506      
Combined Unrestricted Subsidiaries | Reportable Legal Entities            
ScheduleOfCondensedFinancialStatements [Line Items]            
Total current assets 32   46      
Total property, plant and equipment, net 37   31      
Investments in consolidated subsidiaries (41)   (32)      
Deferred tax asset 0   0      
Investment in unconsolidated subsidiaries 40   27      
Other assets 51   58      
TOTAL ASSETS 119   130      
Total current liabilities 19   14      
Long-term debt 0   0      
Asset retirement obligations 0   0      
Other long-term liabilities 131   138      
Deferred tax liability 0   0      
Amounts due to (from) affiliates 44   0      
Total equity (75)   (22)      
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 119   130      
Combined Restricted Subsidiaries | Reportable Legal Entities            
ScheduleOfCondensedFinancialStatements [Line Items]            
Total current assets 594   541      
Total property, plant and equipment, net 5,503   5,635      
Investments in consolidated subsidiaries 16,356   15,050      
Deferred tax asset   0      
Investment in unconsolidated subsidiaries 53   59      
Other assets 135   101      
TOTAL ASSETS 22,641   21,386      
Total current liabilities 637   742      
Long-term debt 0   0      
Asset retirement obligations 969   995      
Other long-term liabilities 103   125      
Deferred tax liability 0   0      
Amounts due to (from) affiliates (979)   (385)      
Total equity 21,911   19,909      
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 22,641   $ 21,386