v3.25.2
Revenue from Contracts with Clients (Revenue Disaggregation) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue [Line Items]        
Trust, Investment and Other Servicing Fees $ 1,231.1 $ 1,166.1 $ 2,444.9 $ 2,309.0
Foreign Exchange Trading Income 50.6 58.4 109.3 115.4
Treasury Management Fees 9.7 9.0 19.3 18.3
Security Commissions and Trading Income 39.6 34.3 78.7 72.2
Other Operating Income 56.4 924.7 107.1 985.7
Investment Security Gains (Losses), net 0.0 0.1 0.0 (189.3)
Total Other Noninterest Income 156.3 1,026.5 314.4 1,002.3
Total Noninterest Income 1,387.4 2,192.6 2,759.3 3,311.3
Custody and Fund Administration        
Disaggregation of Revenue [Line Items]        
Trust, Investment and Other Servicing Fees 498.4 477.2 983.5 944.6
Investment Management and Advisory        
Disaggregation of Revenue [Line Items]        
Trust, Investment and Other Servicing Fees 649.6 609.6 1,297.0 1,203.5
Securities Lending        
Disaggregation of Revenue [Line Items]        
Trust, Investment and Other Servicing Fees 20.3 16.9 38.2 35.5
Other        
Disaggregation of Revenue [Line Items]        
Trust, Investment and Other Servicing Fees $ 62.8 $ 62.4 $ 126.2 $ 125.4