v3.26.1
Derivative Instruments - Narrative (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Derivative [Line Items]          
Other comprehensive income (loss), before tax $ (318,000,000) $ 1,286,000,000 $ (1,108,000,000) $ 2,631,000,000  
Net investment hedge, net 17,000,000   17,000,000   $ 14,000,000
Derivative liabilities 6,241,000,000   6,241,000,000   5,742,000,000
Derivative assets 11,034,000,000   11,034,000,000   9,190,000,000
Credit Default Swap          
Derivative [Line Items]          
Derivative liabilities 1,000,000   1,000,000   1,000,000
Derivative assets $ 144,000,000   $ 144,000,000   $ 76,000,000
Derivative, notional amount 1,010,000,000   1,010,000,000   510,000,000
Derivatives designated as hedges          
Derivative [Line Items]          
Derivative liabilities $ 964,000,000   $ 964,000,000   $ 1,174,000,000
Derivative assets 845,000,000   845,000,000   856,000,000
Derivatives designated as hedges | Interest rate swaps          
Derivative [Line Items]          
Derivative liabilities 99,000,000   99,000,000   30,000,000
Derivative assets $ 36,000,000   $ 36,000,000   $ 129,000,000
Derivative, notional amount 51,484,000,000   51,484,000,000   31,252,000,000
Derivatives designated as hedges | Foreign currency swaps          
Derivative [Line Items]          
Derivative liabilities $ 565,000,000   $ 565,000,000   $ 868,000,000
Derivative assets $ 658,000,000   $ 658,000,000   $ 560,000,000
Derivative, notional amount 27,919,000,000   27,919,000,000   26,437,000,000
Derivatives designated as hedges | Foreign currency forwards          
Derivative [Line Items]          
Derivative liabilities $ 17,000,000   $ 17,000,000   $ 34,000,000
Derivative assets $ 98,000,000   $ 98,000,000   $ 81,000,000
Derivative, notional amount 1,670,000,000   1,670,000,000   2,302,000,000
Derivatives designated as hedges | Cross Currency Interest Rate Contract          
Derivative [Line Items]          
Derivative liabilities $ 283,000,000   $ 283,000,000   $ 242,000,000
Derivative assets $ 51,000,000   $ 51,000,000   $ 86,000,000
Derivative, notional amount 4,198,000,000   4,198,000,000   4,347,000,000
Cash flow hedges | Derivatives designated as hedges | Interest rate swaps          
Derivative [Line Items]          
Losses gains recognized in other comprehensive income $ (84,000,000) 76,000,000 $ (148,000,000) 172,000,000  
Cash flow hedge gain (loss) to be reclassified within the next twelve months     (20,000,000)    
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) 277,000,000   277,000,000   $ (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) (14,000,000) 3,000,000 (22,000,000)  
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) $ 67,000,000   $ 67,000,000   $ 77,000,000