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Other Operating Expense
 9 Months Ended
Sep. 30, 2025
Other Income and Expenses [Abstract]  
Other Operating Expense Other Operating Income
The components of Other Operating Income were as follows.
TABLE 64: OTHER OPERATING INCOME
THREE MONTHS ENDED SEPTEMBER 30,NINE MONTHS ENDED SEPTEMBER 30,
(In Millions)2025202420252024
Loan Service Fees$14.9 $14.0 $41.1 $43.4 
Banking Service Fees14.1 14.2 42.5 40.8 
Bank Owned Life Insurance19.4 18.4 58.3 60.4 
Other Income(1)(2)
12.2 65.2 25.7 952.9 
Total Other Operating Income$60.6 $111.8 $167.7 $1,097.5 
(1) Other Income for the three and nine months ended September 30, 2024 includes a $68.1 million pre-tax gain related to the sale of an equity investment.
(2) Other Income includes the mark-to-market loss on derivative swap activity related to previous sales of certain Visa Class B common shares, realized gains related to sales of certain Visa Class C common shares, and mark-to-market gains on Visa Class C common shares still held. Refer to Note 20—Commitments and Contingent Liabilities for further information.
Other Operating Expense
The components of Other Operating Expense were as follows.
TABLE 65: OTHER OPERATING EXPENSE
THREE MONTHS ENDED SEPTEMBER 30, 2025NINE MONTHS ENDED SEPTEMBER 30, 2025
 In Millions)2025202420252024
Business Promotion$17.1 $19.1 $56.2 $56.6 
Staff Related13.9 12.4 25.1 34.8 
FDIC Insurance Premiums(1)
2.2 7.1 19.6 35.6 
Charitable Contributions(2)
3.4 3.3 8.4 79.3 
Other Expenses48.4 44.2 150.6 155.5 
Total Other Operating Expense$85.0 $86.1 $259.9 $361.8 
(1) FDIC Insurance Premiums include a $14.7 million charge for the nine months ended September 30, 2024, related to the FDIC Insurance Premium Special Assessment.
(2) Charitable Contributions include a $70 million contribution to the Northern Trust Foundation for the nine months ended September 30, 2024.