Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018		Mar. 31, 2017
Cash Flows from Operating Activities:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 645		$ 470	[1],[2]
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation, Amortization and Accretion, Net		175		179
Payments to Acquire Mortgage Servicing Rights (MSR)		80		101
Provisions For Credit Losses And Foreclosed Properties		30		121
Stock Option Compensation And Amortization Of Restricted Stock Compensation		56		58
Gain (Loss) on Sale of Securities, Net		1	[3]	0	[4]
Gain (Loss) on Sale of Loans and Leases		(11)		6
Net decrease/(increase) in loans held for sale		100		(2,056)
Increase (Decrease) in Trading Securities		182		8
Net (increase)/decrease in other assets	[5]	(644)		(389)
Increase (Decrease) in Other Operating Liabilities	[5]	(110)		(284)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations		(200)		2,096
Cash Flows from Investing Activities:
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities		858		993
Proceeds from Sale of Available-for-sale Securities		1,663		0
Payments to Acquire Available-for-sale Securities		2,689		1,450
Proceeds from (payments for) Originations and Purchases of Loans Held-for-investment		413		(492)
Proceeds from sales of loans		36		118
Payments for (Proceeds from) Mortgage Servicing Rights		(60)		0
Capital expenditures		(67)		(43)
Proceeds from Sale of Other Real Estate		52		55
Payments for (Proceeds from) Other Investing Activities	[5]	3		2
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		209		(817)
Cash Flows from Financing Activities:
Net (decrease)/increase in total deposits		1,599		2,455
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings		(1,209)		(68)
Proceeds from Issuance of Long-term Debt		1,311		1,340
Repayment of long-term debt		(333)		(2,576)
Payments for Repurchase of Preferred Stock and Preference Stock		(450)		0
Payments for Repurchase of Common Stock		(330)		(414)
Common and preferred dividends paid		(197)		(138)
Payments Related to Tax Withholding for Share-based Compensation		(42)		(36)
Proceeds from the exercise of stock options		34		9
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		383		572
Cash and Cash Equivalents, Period Increase (Decrease)		392		1,851
Cash and cash equivalents		6,912		6,423
Cash and cash equivalents		7,304		8,274
Supplemental Disclosures:
Transfer of Loans Held-for-sale to Portfolio Loans		6		7
Transfer of Portfolio Loans and Leases to Held-for-sale		204		60
Transfer to Other Real Estate		$ 19		$ 15

[1] Beginning in the second quarter of 2017, the Company realigned its business segment structure from three segments to two segments. Specifically, the Company retained the previous composition of the Wholesale Banking segment and changed the basis of presentation of the Consumer Banking and Private Wealth Management segment and Mortgage Banking segment such that those segments were combined into a single Consumer segment. Accordingly, business segment information presented for the three months ended March 31, 2017 has been revised to conform to the new business segment structure and updated internal funds transfer pricing methodology for consistent presentation.

[2] During the fourth quarter of 2017, the Company sold PAC, the results of which were previously reported within the Wholesale business segment. For all periods prior to January 1, 2018, PAC's financial results, including the gain on sale, have been transferred to Corporate Other for enhanced comparability of the Wholesale business segment excluding PAC.

[3] Amounts are presented in accordance with ASC Topic 606, Revenue from Contracts with Customers.

[4] Amounts for periods prior to January 1, 2018 are presented in accordance with ASC Topic 605, Revenue Recognition, and have not been restated to conform with ASC Topic 606, Revenue from Contracts with Customers.

[5] Related to the Company's adoption of ASU 2016-15, certain prior period amounts have been retrospectively reclassified between operating activities and investing activities. See Note 1, "Significant Accounting Policies," for additional information.