v3.26.1
Guarantee Arrangements and Pledged Assets and Repurchase Agreements - Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending Agreements (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]    
Securities purchased under agreements to resell, Gross Amounts Recognized $ 7,300 $ 11,700
Securities purchased under agreements to resell, Gross Amounts Offset in the Balance Sheet 2,800 2,400
Securities purchased under agreements to resell, Net Amounts Presented in the Balance Sheet 4,500 9,300
Securities purchased under resale agreements, Gross Amounts Not Offset in the Balance Sheet 4,500 9,300
Securities purchased under agreements to resell, Net Amount 0 0
Securities sold under repurchase agreements, Gross Amounts Recognized 4,800 3,700
Securities sold under repurchase agreements, Gross Amounts Offset in the Balance Sheet 2,800 2,400
Securities sold under repurchase agreements, Net Amounts Presented in the Balance Sheet 2,000 1,300
Securities sold under repurchase agreements, Gross Amounts Not Offset in the Balance Sheet 2,000 1,300
Securities sold under repurchase agreements, Net Amount $ 0 $ 0