Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 1,456	$ 1,391
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Gain (Loss) on Disposition of Business	0	(105)
Depreciation, Amortization and Accretion, Net	596	504
Payments to Acquire Mortgage Servicing Rights (MSR)	(185)	(137)
Provisions For Credit Losses And Foreclosed Properties	122	286
Stock Option Compensation And Amortization Of Restricted Stock Compensation	65	50
Excess Tax Benefit from Share-based Compensation, Operating Activities	18	5
Gain (Loss) on Sale of Securities, Net	(21)	11
Gain (Loss) on Sale of Loans and Leases	249	239
Net decrease/(increase) in loans held for sale	644	(139)
Increase (Decrease) in Trading Securities	(183)	(1,088)
Net (increase)/decrease in other assets	(26)	189
Increase (Decrease) in Other Operating Liabilities	(196)	(155)
Net Cash Provided by (Used in) Operating Activities	2,005	563
Cash Flows from Investing Activities:
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities	4,621	2,788
Proceeds from sales of securities available for sale	2,708	793
Purchases of securities available for sale	(7,861)	(6,986)
Proceeds from sales of trading securities	0	59
Proceeds from (payments for) Originations and Purchases of Loans Held-for-investment	(2,097)	(7,698)
Proceeds from sales of loans	2,048	3,029
Payments for (Proceeds from) Mortgage Servicing Rights	113	109
Capital expenditures	(74)	(96)
Payments related to acquisitions, including contingent consideration	(30)	(11)
Proceeds from Divestiture of Businesses	0	193
Proceeds from Sale of Other Real Estate	179	279
Net cash (used in)/provided by investing activities	(619)	(7,759)
Cash Flows from Financing Activities:
Net (decrease)/increase in total deposits	5,804	6,748
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings	(5,244)	1,633
Proceeds from Issuance of Long-term Debt	1,237	2,574
Repayment of long-term debt	(5,670)	(67)
Payments for Repurchase of Common Stock	(465)	(348)
Common and preferred dividends paid	(393)	(294)
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options	32	12
Net cash provided by/(used in) financing activities	(4,699)	10,258
Net (decrease)/increase in cash and cash equivalents	(3,313)	3,062
Cash and cash equivalents at beginning of period	8,229	5,263
Cash and cash equivalents at end of period	4,916	8,325
Supplemental Disclosures:
Transfer of Loans Held-for-sale to Portfolio Loans	726	39
Loans transferred from loans to loans held for sale	1,734	3,183
Transfer to Other Real Estate	52	113
non-cash impact of deconsolidated assets	0	282
Non-cash impact of debt acquired by purchaser in leverage lease sale	$ 129	$ 29