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Regulatory Capital - Additional Information (Details)
$ in Billions
 12 Months Ended
Dec. 31, 2024
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]  
Description of Material Affects of Noncompliance Failure to meet minimum capital requirements can result in certain mandatory, and possibly additional discretionary actions on the part of regulators, that if undertaken, could have a direct material effect on the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory practices.
Common equity tier 1 capital to risk-weighted assets minimum ratio 0.045
Total capital to risk weighted assets minimum ratio 0.08
Tier 1 leverage capital ratio 0.04
Permit banking assets $ 15
Corporation comply conservation buffer ratio 0.025
Minimum  
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]  
Tier I capital to risk-weighted assets minimum ratio 0.04
Maximum  
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]  
Non publicly traded bank holding companies consolidated assets $ 1
Tier I capital to risk-weighted assets minimum ratio 0.06