v3.25.2
Offsetting of Assets and Liabilities (Offsetting of Derivative Liabilities and Securities Sold Under Agreements to Repurchase) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Total Derivatives Subject to a Master Netting Arrangement    
GROSS RECOGNIZED LIABILITIES $ 3,270.2 $ 4,841.3
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 2,380.7 4,199.6
NET AMOUNTS PRESENTED IN THE BALANCE SHEET 889.5 641.7
GROSS AMOUNTS NOT OFFSET IN THE BALANCE SHEET 0.0 0.0
NET AMOUNT 889.5 641.7
Total Derivatives Not Subject to a Master Netting Arrangement    
Total Derivatives Not Subject to a Master Netting Arrangement 1,267.5 317.1
Offsetting Derivative Liabilities [Abstract]    
GROSS RECOGNIZED LIABILITIES 4,537.7 5,158.4
Derivative Liabilities 2,157.0 958.8
NET AMOUNT 2,157.0 958.8
Securities Sold under Agreements to Repurchase    
GROSS RECOGNIZED LIABILITIES 65,692.6 65,374.8
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 64,851.2 64,912.8
NET AMOUNTS PRESENTED IN THE BALANCE SHEET 841.4 462.0
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 841.4 462.0
NET AMOUNT 0.0 0.0
Foreign Exchange Contracts | Over the Counter Derivative    
Total Derivatives Subject to a Master Netting Arrangement    
GROSS RECOGNIZED LIABILITIES 2,844.8 4,392.7
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 2,353.8 4,197.3
NET AMOUNTS PRESENTED IN THE BALANCE SHEET 491.0 195.4
GROSS AMOUNTS NOT OFFSET IN THE BALANCE SHEET 0.0 0.0
NET AMOUNT 491.0 195.4
Interest Rate Swap Contracts | Over the Counter Derivative    
Total Derivatives Subject to a Master Netting Arrangement    
GROSS RECOGNIZED LIABILITIES 402.6 421.2
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 5.4 2.3
NET AMOUNTS PRESENTED IN THE BALANCE SHEET 397.2 418.9
GROSS AMOUNTS NOT OFFSET IN THE BALANCE SHEET 0.0 0.0
NET AMOUNT 397.2 418.9
Interest Rate Swap Contracts | Interest Rate Swaps Exchange Cleared    
Total Derivatives Subject to a Master Netting Arrangement    
GROSS RECOGNIZED LIABILITIES   0.2
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET   0.0
NET AMOUNTS PRESENTED IN THE BALANCE SHEET   0.2
GROSS AMOUNTS NOT OFFSET IN THE BALANCE SHEET   0.0
NET AMOUNT   0.2
Other Financial Derivatives | Other Financial Derivatives    
Total Derivatives Subject to a Master Netting Arrangement    
GROSS RECOGNIZED LIABILITIES 22.8 27.2
GROSS AMOUNTS OFFSET IN THE BALANCE SHEET 21.5 0.0
NET AMOUNTS PRESENTED IN THE BALANCE SHEET 1.3 27.2
GROSS AMOUNTS NOT OFFSET IN THE BALANCE SHEET 0.0 0.0
NET AMOUNT $ 1.3 $ 27.2