v3.26.1
Consolidated Statements of Changes in Shareholder's Equity (Unaudited) - SPPC - USD ($)
$ in Millions
Total
Additional Paid-in Capital
Retained Earnings
SPPC
SPPC
Common Stock
SPPC
Additional Paid-in Capital
SPPC
Retained Earnings
SPPC
Accumulated Other Comprehensive (Loss) Income, Net
Balance (shares) at Dec. 31, 2024         1,000      
Balance at Dec. 31, 2024       $ 2,100 $ 0 $ 1,726 $ 375 $ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income $ 1,187     27     27  
Contributions       275   275    
Other equity transactions $ (5)   $ (2)          
Balance (shares) at Mar. 31, 2025         1,000      
Balance at Mar. 31, 2025       $ 2,402 $ 0 2,001 402 (1)
Balance (shares) at Dec. 31, 2025 1     1,000 1,000      
Balance at Dec. 31, 2025 $ 54,065     $ 2,981 $ 0 2,561 421 (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 1,114     27     27  
Contributions       300   300    
Other equity transactions $ 9 $ 5   $ 1     1  
Balance (shares) at Mar. 31, 2026 1     1,000 1,000      
Balance at Mar. 31, 2026 $ 55,052     $ 3,309 $ 0 $ 2,861 $ 449 $ (1)