Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Cash Flows from Operating Activities:
Net Income	$ 230.7		$ 181.4
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Investment Security Losses (Gains), net	(0.1)	[1]	4.0	[1]
Amortization and Accretion of Securities and Unearned Income, net	10.7		3.0
Provision for Credit Losses	(4.5)		3.0
Depreciation on Buildings and Equipment	23.1		23.0
Pension Plan Contributions	(16.5)		(13.9)
Change in Receivables	50.3		(254.9)
Change in Interest Payable	(6.2)		(0.1)
Change in Collateral With Derivative Counterparties, net	289.5		505.7
Other Operating Activities, net	(151.5)		26.8
Net Cash Provided by Operating Activities	490.8		538.5
Cash Flows from Investing Activities:
Net Change in Federal Funds Sold and Securities Purchased under Agreements to Resell	(51.2)		19.6
Change in Interest-Bearing Deposits with Banks	(1,242.6)		2,329.1
Net Change in Federal Reserve Deposits	8,582.1		700.2
Purchases of Securities - Held to Maturity	(2,101.1)		(2,467.4)
Proceeds from Maturity and Redemption of Securities - Held to Maturity	278.4		597.6
Purchases of Securities - Available for Sale	(2,992.5)		(3,939.1)
Proceeds from Sale, Maturity and Redemption of Securities - Available for Sale	1,686.8		2,803.7
Change in Loans and Leases	(1,004.2)		(274.9)
Purchases of Buildings and Equipment	(25.5)		(13.5)
Purchases and Development of Computer Software	(68.4)		(74.9)
Change in Client Security Settlement Receivables	(660.7)		(485.6)
Other Investing Activities, net	404.8		(16.9)
Net Cash Provided by (Used in) Investing Activities	2,805.9		(822.1)
Cash Flows from Financing Activities:
Change in Deposits	(2,817.7)		2,082.4
Change in Federal Funds Purchased	(522.2)		48.8
Change in Securities Sold under Agreements to Repurchase	(271.9)		(180.7)
Change in Short-Term Other Borrowings	1,064.2		(1,004.4)
Repayments of Senior Notes and Long-Term Debt	(230.1)		(1.1)
Treasury Stock Purchased	(107.2)		(163.0)
Net Proceeds from Stock Options	32.2		54.0
Cash Dividends Paid on Common Stock	(77.0)		(75.0)
Cash Dividends Paid on Preferred Stock	(9.5)
Other Financing Activities, net	747.9		27.1
Net Cash (Used in) Provided by Financing Activities	(2,191.3)		788.1
Effect of Foreign Currency Exchange Rates on Cash	(81.2)		9.4
Increase in Cash and Due from Banks	1,024.2		513.9
Cash and Due from Banks at Beginning of Year	3,050.6		3,162.4
Cash and Due from Banks at End of Period	4,074.8		3,676.3
Supplemental Disclosures of Cash Flow Information:
Interest Paid	44.9		50.4
Income Taxes Paid	40.5		15.1
Transfers from Loans to OREO	4.6		1.9
Computer Software
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Amortization of Intangibles	60.7		55.6
Other Intangible Assets
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Amortization of Intangibles	$ 4.6		$ 4.9

[1] Changes in Other-Than-Temporary-Impairment (OTTI) Losses $ - $ (4.6 ) Noncredit-related OTTI Losses Recorded in/(Reclassified from) OCI - 0.7 Other Security Gains (Losses), net 0.1 (0.1 ) Investment Security Gains (Losses), net $ 0.1 $ (4.0 )