Quarterly report [Sections 13 or 15(d)]

Commitments and Contingencies - Credit Extension Commitments Narrative (Details)

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Commitments and Contingencies - Credit Extension Commitments Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]    
Legally binding unfunded commitments syndicated $ 10,600 $ 10,400
Credit extension commitments, carrying value 1,100 1,100
Notional amount of credit extension commitments under fair value option 2,000 2,200
Unfunded loan commitments    
Other Commitments [Line Items]    
Fair value carrying amount, liabilities $ 64 $ 144