v3.25.4
Short-Term and Long-Term Debt - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 21, 2023
Debt Instrument [Line Items]    
Non-operating indebtedness of subsidiaries to total capitalization, maximum 7.50%  
Five-year revolving credit facility    
Debt Instrument [Line Items]    
Maturity period   5 years
Maximum borrowing capacity   $ 2,000
Letter of credit $ 3  
Amount drawn 0  
Banking regulation, mortgage banking, net worth, minimum $ 8,626  
Percentage of aggregate net proceeds of equity issuances 50.00%  
Maximum debt to capital ratio 35.00%