Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Noninterest Income
Trust, Investment and Other Servicing Fees	$ 2,980.5	$ 2,832.8	$ 2,609.8
Foreign Exchange Trading Income	261.8	210.1	244.4
Treasury Management Fees	64.7	66.0	69.0
Security Commissions and Trading Income	78.7	67.6	68.0
Other Operating Income	247.1	153.5	166.5
Investment Security Losses, net (Note)	(0.3)	(4.3)	(1.5)
Total Noninterest Income	3,632.5	3,325.7	3,156.2
Net Interest Income
Interest Income	1,224.0	1,186.9	1,155.5
Interest Expense	153.9	181.4	222.4
Net Interest Income	1,070.1	1,005.5	933.1
Provision for Credit Losses	(43.0)	6.0	20.0
Net Interest Income after Provision for Credit Losses	1,113.1	999.5	913.1
Noninterest Expense
Compensation	1,443.3	1,417.9	1,306.6
Employee Benefits	285.3	268.7	257.5
Outside Services	595.7	574.6	564.1
Equipment and Software	454.8	421.4	377.6
Occupancy	173.5	180.3	173.8
Other Operating Expense	328.0	272.1	314.2
Total Noninterest Expense	3,280.6	3,135.0	2,993.8
Income before Income Taxes	1,465.0	1,190.2	1,075.5
Provision for Income Taxes	491.2	378.4	344.2
NET INCOME	973.8	811.8	731.3
Preferred Stock Dividends	23.4	9.5	0.0
Net Income Applicable to Common Stock	$ 950.4	$ 802.3	$ 731.3
PER COMMON SHARE
Net Income - Basic (in dollars per share)	$ 4.03	$ 3.34	$ 3.01
Net Income - Diluted (in dollars per share)	$ 3.99	$ 3.32	$ 2.99
Average Number of Common Shares Outstanding - Basic	232,279,849	235,829,790	239,265,313
Average Number of Common Shares Outstanding - Diluted	234,221,729	237,720,255	240,554,840
Note: Changes in Other-Than-Temporary-Impairment (OTTI) Losses	$ 0.0	$ (4.9)	$ 0.0
Noncredit-related OTTI Losses Recorded in (Reclassified from) OCI	0.0	0.7	0.0
Other Security Losses, net	(0.3)	(0.1)	(1.5)
Investment Security Losses, net	$ (0.3)	$ (4.3)	$ (1.5)