v3.26.1
Advances (Details) - Table - Concentration Risk - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Advances Outstanding    
Western Alliance Bank $ 5,200 $ 3,700
City National Bank $ 3,100  
JPMorgan Chase   $ 3,374
Percentage of Total Advances Outstanding    
Western Alliance Bank 14.00% 10.00%
City National Bank 8.00%  
JPMorgan Chase   9.00%
Interest Income from Advances    
Western Alliance Bank $ 31 $ 41
City National Bank $ 45  
JPMorgan Chase   $ 70
Percent of Interest Income from Advances    
Western Alliance Bank 8.00% 9.00%
City National Bank 12.00%  
JPMorgan Chase   16.00%