Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Noninterest Income
Trust, Investment and Other Servicing Fees	$ 4,432.6	$ 4,361.1	$ 3,995.0
Foreign Exchange Trading Income	288.6	292.6	290.4
Treasury Management Fees	39.3	44.3	45.4
Security Commissions and Trading Income	136.2	140.2	133.2
Other Operating Income	191.3	243.9	194.0
Investment Security Gains (Losses), net	(214.0)	(0.3)	(0.4)
Total Noninterest Income	4,874.0	5,081.8	4,657.6
Net Interest Income
Interest Income	2,877.7	1,406.5	1,643.5
Interest Expense	990.5	23.8	200.3
Net Interest Income	1,887.2	1,382.7	1,443.2
Provision for Credit Losses	12.0	(81.5)	125.0
Net Interest Income after Provision for Credit Losses	1,875.2	1,464.2	1,318.2
Noninterest Expense
Compensation	2,248.0	2,011.0	1,947.1
Employee Benefits	437.4	431.4	387.7
Outside Services	880.3	849.4	763.1
Equipment and Software	838.8	736.3	673.5
Occupancy	219.1	208.7	230.1
Other Operating Expense	359.3	299.1	346.7
Total Noninterest Expense	4,982.9	4,535.9	4,348.2
Income before Income Taxes	1,766.3	2,010.1	1,627.6
Provision for Income Taxes	430.3	464.8	418.3
NET INCOME	1,336.0	1,545.3	1,209.3
Preferred Stock Dividends	41.8	41.8	56.2
Net Income Applicable to Common Stock	$ 1,294.2	$ 1,503.5	$ 1,153.1
PER COMMON SHARE
Net Income - Basic (in dollars per share)	$ 6.16	$ 7.16	$ 5.48
Net Income - Diluted (in dollars per share)	$ 6.14	$ 7.14	$ 5.46
Average Number of Common Shares Outstanding - Basic (in shares)	208,309,331	208,075,522	208,319,412
Average Number of Common Shares Outstanding - Diluted (in shares)	208,867,264	208,899,230	209,007,986