Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Noninterest Income
Foreign Exchange Trading Income	$ 71.7	$ 49.1	$ 229.1	$ 147.1
Treasury Management Fees	12.5	13.2	40.0	42.8
Security Commissions and Trading Income	21.9	21.2	75.2	65.8
Other Operating Income	20.9	40.0	87.1	122.7
Investment Security Gains (Losses), net (Note)	(0.1)	(0.4)	(0.3)	(1.1)
Total Noninterest Income	1,066.1	991.0	3,250.9	2,901.6
Net Interest Income
Interest Income	599.2	453.8	1,672.8	1,281.3
Interest Expense	191.0	99.6	467.3	232.1
Net Interest Income	408.2	354.2	1,205.5	1,049.2
Provision for Credit Losses	(9.0)	(7.0)	(10.5)	(15.0)
Net Interest Income after Provision for Credit Losses	417.2	361.2	1,216.0	1,064.2
Noninterest Expense
Compensation	436.1	418.3	1,362.5	1,276.6
Employee Benefits	85.5	74.8	266.0	228.2
Outside Services	186.9	172.7	543.9	492.8
Equipment and Software	145.7	130.5	429.9	391.5
Occupancy	51.0	47.3	151.3	139.0
Other Operating Expense	97.1	92.0	241.4	239.4
Total Noninterest Expense	1,002.3	935.6	2,995.0	2,767.5
Income before Income Taxes	481.0	416.6	1,471.9	1,198.3
Provision for Income Taxes	106.5	118.2	325.4	355.9
Net Income	374.5	298.4	1,146.5	842.4
Preferred Stock Dividends	17.3	17.3	40.5	43.9
Net Income Applicable to Common Stock	$ 357.2	$ 281.1	$ 1,106.0	$ 798.5
Per Common Share
Net Income — Basic (in dollars per share)	$ 1.59	$ 1.21	$ 4.87	$ 3.43
Net Income - Diluted (in dollars per share)	$ 1.58	$ 1.20	$ 4.84	$ 3.41
Average number of common shares outstanding
Basic (in shares)	222,442,797	228,010,866	224,098,656	228,751,804
Diluted (in shares)	223,860,014	229,313,645	225,494,635	230,189,289
Changes in other-than-temporary-impairment (OTTI) losses	$ (0.1)	$ 0.0	$ (0.3)	$ (0.1)
Other Security Gains (Losses), net	0.0	(0.4)	0.0	(1.0)
Investment Security Gains (Losses), net	(0.1)	(0.4)	(0.3)	(1.1)
Total Trust, Investment and Other Servicing Fees
Noninterest Income
Revenue from contract with client	$ 939.2	$ 867.9	$ 2,819.8	$ 2,524.3