Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Noninterest Income
Trust, Investment and Other Servicing Fees	$ 748.2	$ 727.5
Foreign Exchange Trading Income	60.5	71.6
Treasury Management Fees	16.2	16.3
Security Commissions and Trading Income	18.9	19.8
Other Operating Income	38.1	38.6
Investment Security Gains, net (Note)	0.3	0.1
Total Noninterest Income	882.2	873.9
Net Interest Income
Interest Income	352.0	298.8
Interest Expense	44.2	38.2
Net Interest Income	307.8	260.6
Provision for Credit Losses	2.0	(4.5)
Net Interest Income after Provision for Credit Losses	305.8	265.1
Noninterest Expense
Compensation	378.8	354.3
Employee Benefits	70.6	72.9
Outside Services	149.9	135.1
Equipment and Software	114.2	110.3
Occupancy	40.9	43.0
Other Operating Expense	74.4	73.4
Total Noninterest Expense	828.8	789.0
Income before Income Taxes	359.2	350.0
Provision for Income Taxes	117.4	119.3
Net Income	241.8	230.7
Preferred Stock Dividends	5.9	5.9
Net Income Applicable to Common Stock	$ 235.9	$ 224.8
Per Common Share
Net Income — Basic (in dollars per share)	$ 1.01	$ 0.95
Net Income - Diluted (in dollars per share)	$ 1.01	$ 0.94
Average Number of Common Shares Outstanding — Basic	228,619,089	233,381,168
Average Number of Common Shares Outstanding - Diluted	229,979,690	235,288,695
Note: Changes in Other-Than-Temporary-Impairment (OTTI) Losses	$ 0.0	$ 0.0
Noncredit-related OTTI Losses Recorded in/(Reclassified from) OCI	0.0	0.0
Other Security Gains, net	0.3	0.1
Investment Security Gains, net	$ 0.3	$ 0.1