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Schedule I (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Condensed Financial Statements, Captions [Line Items]      
Cash Dividends Paid to Parent, Consolidated Subsidiaries $ 9,200 $ 8,000  
Parent Company [Member]      
Condensed Financial Statements, Captions [Line Items]      
Cash Dividends Paid to Parent, Consolidated Subsidiaries 19,300 18,500 $ 15,600
Return of capital to parent company 21 639 $ 1,424
Long-term notes payable to subsidiaries 14,400    
Short-term notes payable to subsidiaries 2,000 9,900  
Subsidiaries [Member]      
Condensed Financial Statements, Captions [Line Items]      
Other Long-term Debt $ 700 $ 1,100