Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 1,180.3	$ 1,138.9
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Investment Security (Losses) Gains, net	0.3	0.0
Amortization and Accretion of Securities and Unearned Income, net	51.5	75.3
Provision for Credit Losses	7.0	(70.0)
Depreciation and Amortization	405.4	382.8
Pension Plan Contributions	(20.7)	(6.7)
Change in Receivables	(107.8)	(139.3)
Change in Interest Payable	92.6	3.8
Change in Collateral With Derivative Counterparties, net	(3,089.5)	(2,101.2)
Other Operating Activities, net	(278.7)	30.5
Net Cash Used in Operating Activities	(1,759.6)	(685.9)
CASH FLOWS FROM INVESTING ACTIVITIES
Change in Federal Funds Sold	(30.1)	0.0
Change in Securities Purchased under Agreements to Resell	(550.6)	711.2
Change in Interest-Bearing Deposits with Banks	193.7	1,371.0
Net Change in Federal Reserve and Other Central Bank Deposits	22,777.0	4,689.0
Purchases of Held to Maturity Debt Securities	(27,309.4)	(40,859.6)
Proceeds from Maturity and Redemption of Held to Maturity Debt Securities	31,071.5	43,934.8
Purchases of Available for Sale Debt Securities	(3,777.9)	(9,811.6)
Proceeds from Maturity and Redemption of Available for Sale Debt Securities	5,524.9	6,229.6
Change in Loans and Leases	(3,607.7)	(5,721.5)
Purchases of Buildings and Equipment	(70.7)	(65.0)
Purchases and Development of Computer Software	(425.2)	(278.7)
Change in Client Security Settlement Receivables	(1,170.3)	(814.1)
Bank-Owned Life Insurance Policy Premiums	(500.0)	0.0
Other Investing Activities, net	(351.7)	803.3
Net Cash Provided by Investing Activities	21,773.5	188.4
CASH FLOWS FROM FINANCING ACTIVITIES
Change in Deposits	(26,117.2)	(271.9)
Change in Federal Funds Purchased	4,364.6	(260.0)
Change in Securities Sold under Agreements to Repurchase	29.4	533.8
Change in Short-Term Other Borrowings	3,565.8	1,609.1
Proceeds from Senior Notes	995.4	0.0
Repayments of Senior Notes	(500.0)	(500.0)
Treasury Stock Purchased	(35.3)	(265.8)
Net Proceeds from Stock Options	3.4	48.8
Cash Dividends Paid on Common Stock	(437.5)	(437.8)
Cash Dividends Paid on Preferred Stock	(25.6)	(25.6)
Other Financing Activities, net	0.2	(0.6)
Net Cash (Used in) Provided by Financing Activities	(18,156.8)	430.0
Effect of Foreign Currency Exchange Rates on Cash	(421.1)	(127.3)
Change in Cash and Due from Banks	1,436.0	(194.8)
Cash and Due from Banks at Beginning of Period	3,056.8	4,389.5
Cash and Due from Banks at End of Period	4,492.8	4,194.7
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest Paid	263.4	17.7
Income Taxes Paid	295.3	267.8
Transfers from Loans to OREO	0.0	10.1
Transfers from Available for Sale Debt Securities to Held to Maturity Debt Securities	$ 6,623.3	$ 6,864.1