Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Noninterest Income
Trust, Investment and Other Servicing Fees	$ 1,063.7	$ 1,003.6
Foreign Exchange Trading Income	78.7	88.9
Treasury Management Fees	11.2	11.0
Security Commissions and Trading Income	34.8	41.7
Other Operating Income	54.9	34.4
Investment Security Gains (Losses), net	0.0	0.0
Total Noninterest Income	1,243.3	1,179.6
Net Interest Income
Interest Income	349.9	529.2
Interest Expense	9.8	121.1
Net Interest Income	340.1	408.1
Provision for Credit Losses	(30.0)	61.0
Net Interest Income after Provision for Credit Losses	370.1	347.1
Noninterest Expense
Compensation	518.5	499.8
Employee Benefits	103.4	97.9
Outside Services	196.4	192.8
Equipment and Software	176.7	162.2
Occupancy	50.8	51.1
Other Operating Expense	71.7	61.8
Total Noninterest Expense	1,117.5	1,065.6
Income before Income Taxes	495.9	461.1
Provision for Income Taxes	120.8	100.5
Net Income	375.1	360.6
Preferred Stock Dividends	16.2	30.5
Net Income Applicable to Common Stock	$ 358.9	$ 330.1
Per Common Share
Net Income — Basic (in dollars per share)	$ 1.71	$ 1.56
Net Income - Diluted (in dollars per share)	$ 1.70	$ 1.55
Average number of common shares outstanding
Average Number of Common Shares Outstanding - Basic (in shares)	208,112,824	208,881,131
Average Number of Common Shares Outstanding - Diluted (in shares)	208,946,448	209,816,822