Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Noninterest Income
Trust, Investment and Other Servicing Fees	$ 3,852.1	$ 3,753.7	$ 3,434.3
Foreign Exchange Trading Income	250.9	307.2	209.9
Treasury Management Fees	44.5	51.8	56.4
Security Commissions and Trading Income	103.6	98.3	89.6
Other Operating Income	145.5	127.5	157.5
Investment Security Gains (Losses), net	(1.4)	(1.0)	(1.6)
Total Noninterest Income	4,395.2	4,337.5	3,946.1
Net Interest Income
Interest Income	2,499.9	2,321.4	1,769.4
Interest Expense	822.0	698.7	340.2
Net Interest Income	1,677.9	1,622.7	1,429.2
Provision for Credit Losses	(14.5)	(14.5)	(28.0)
Net Interest Income after Provision for Credit Losses	1,692.4	1,637.2	1,457.2
Noninterest Expense
Compensation	1,859.0	1,806.9	1,733.7
Employee Benefits	355.2	356.7	319.9
Outside Services	774.5	739.4	668.4
Equipment and Software	612.1	582.2	524.0
Occupancy	212.9	201.1	191.8
Other Operating Expense	329.8	330.6	331.6
Total Noninterest Expense	4,143.5	4,016.9	3,769.4
Income before Income Taxes	1,944.1	1,957.8	1,633.9
Provision for Income Taxes	451.9	401.4	434.9
NET INCOME	1,492.2	1,556.4	1,199.0
Preferred Stock Dividends	46.4	46.4	49.8
Net Income Applicable to Common Stock	$ 1,445.8	$ 1,510.0	$ 1,149.2
PER COMMON SHARE
Net Income - Basic (in dollars per share)	$ 6.66	$ 6.68	$ 4.95
Net Income - Diluted (in dollars per share)	$ 6.63	$ 6.64	$ 4.92
Average Number of Common Shares Outstanding - Basic (in shares)	214,525,547	223,148,335	228,257,664
Average Number of Common Shares Outstanding - Diluted (in shares)	215,601,149	224,488,326	229,654,401
Note: Changes in Other-Than-Temporary-Impairment (OTTI) Losses	$ (0.3)	$ (0.5)	$ (0.2)
Other Security Gains (Losses), net	(1.1)	(0.5)	(1.4)
Investment Security Gains (Losses), net	$ (1.4)	$ (1.0)	$ (1.6)