v3.26.3
Derivative Instruments - Narrative (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Derivative [Line Items]          
Other comprehensive income (loss), before tax $ (6,091,000,000) $ 1,742,000,000 $ (7,199,000,000) $ 4,373,000,000  
Net investment hedge, net 18,000,000   18,000,000   $ 14,000,000
Derivative liabilities 6,757,000,000   6,757,000,000   5,742,000,000
Derivative assets 10,950,000,000   10,950,000,000   9,190,000,000
Credit Default Swap          
Derivative [Line Items]          
Derivative liabilities 8,000,000   8,000,000   1,000,000
Derivative assets $ 226,000,000   $ 226,000,000   $ 76,000,000
Derivative, notional amount 2,460,000,000   2,460,000,000   510,000,000
Credit derivative, average contract term     3 years 9 months 18 days    
Derivatives designated as hedges          
Derivative [Line Items]          
Derivative liabilities $ 1,182,000,000   $ 1,182,000,000   $ 1,174,000,000
Derivative assets 659,000,000   659,000,000   856,000,000
Derivatives designated as hedges | Interest rate swaps          
Derivative [Line Items]          
Derivative liabilities 404,000,000   404,000,000   30,000,000
Derivative assets $ 9,000,000   $ 9,000,000   $ 129,000,000
Derivative, notional amount 45,895,000,000   45,895,000,000   31,252,000,000
Derivatives designated as hedges | Foreign currency swaps          
Derivative [Line Items]          
Derivative liabilities $ 501,000,000   $ 501,000,000   $ 868,000,000
Derivative assets $ 534,000,000   $ 534,000,000   $ 560,000,000
Derivative, notional amount 29,398,000,000   29,398,000,000   26,437,000,000
Derivatives designated as hedges | Foreign currency forwards          
Derivative [Line Items]          
Derivative liabilities $ 8,000,000   $ 8,000,000   $ 34,000,000
Derivative assets $ 73,000,000   $ 73,000,000   $ 81,000,000
Derivative, notional amount 1,119,000,000   1,119,000,000   2,302,000,000
Derivatives designated as hedges | Cross Currency Interest Rate Contract          
Derivative [Line Items]          
Derivative liabilities $ 269,000,000   $ 269,000,000   $ 242,000,000
Derivative assets $ 37,000,000   $ 37,000,000   $ 86,000,000
Derivative, notional amount 3,547,000,000   3,547,000,000   4,347,000,000
Cash flow hedges | Derivatives designated as hedges | Interest rate swaps          
Derivative [Line Items]          
Losses gains recognized in other comprehensive income $ (291,000,000) 14,000,000 $ (439,000,000) 186,000,000  
Cash flow hedge gain (loss) to be reclassified within the next twelve months     (95,000,000)    
Cash flow hedges | Derivatives designated as hedges | Foreign currency swaps          
Derivative [Line Items]          
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net   0 0    
Fair Value Hedging | Derivatives designated as hedges | Interest rate swaps | Interest Sensitive Contracts          
Derivative [Line Items]          
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) 1,081,000,000   1,081,000,000   $ (20,000,000)
Fair Value Hedging | Derivatives designated as hedges | Net Investment Hedging          
Derivative [Line Items]          
Other comprehensive income (loss), before tax 1,000,000 8,000,000 4,000,000 (14,000,000)  
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net 0 $ 0 0 $ 0  
Fair Value Hedging | Derivatives designated as hedges | Cross Currency Interest Rate Contract | Interest Sensitive Contracts          
Derivative [Line Items]          
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) $ 79,000,000   $ 79,000,000   $ 77,000,000