Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net Cash Provided by (Used in) Operating Activities, Continuing Operations		$ 2,098	$ (197)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		470	449
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation, Amortization and Accretion, Net		179	171
Payments to Acquire Mortgage Servicing Rights (MSR)		(101)	(46)
Provisions For Credit Losses And Foreclosed Properties		121	103
Stock Option Compensation And Amortization Of Restricted Stock Compensation		58	25
Gain (Loss) on Sale of Securities, Net		0	0
Gain (Loss) on Sale of Loans and Leases		(6)	(84)
Net decrease/(increase) in loans held for sale		2,056	(4)
Increase (Decrease) in Trading Securities		(8)	(689)
Net (increase)/decrease in other assets	[1]	(387)	146
Increase (Decrease) in Other Operating Liabilities	[1]	(284)	(268)
Cash Flows from Investing Activities:
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		(819)	(3,459)
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities		993	1,057
Purchases of securities available for sale		(1,450)	(1,008)
Proceeds from (payments for) Originations and Purchases of Loans Held-for-investment		(492)	(3,438)
Proceeds from sales of loans		118	18
Payments for (Proceeds from) Mortgage Servicing Rights		0	(75)
Capital expenditures		(43)	(24)
Payments related to acquisitions, including contingent consideration		0	(23)
Proceeds from Sale of Other Real Estate		55	34
Cash Flows from Financing Activities:
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		572	2,384
Net (decrease)/increase in total deposits		2,455	2,331
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings		(68)	317
Proceeds from Issuance of Long-term Debt		1,340	1,105
Repayment of long-term debt		(2,576)	(1,019)
Payments for Repurchase of Common Stock		(414)	(151)
Payments for Repurchase of Warrants		0	(24)
Common and preferred dividends paid		(138)	(130)
Proceeds from the exercise of stock options	[1]	9	1
Payments Related to Tax Withholding for Share-based Compensation	[1]	(36)	(46)
Cash and Cash Equivalents, Period Increase (Decrease)		1,851	(1,272)
Cash and cash equivalents		6,423	5,599
Cash and cash equivalents		8,274	4,327
Supplemental Disclosures:
Transfer of Loans Held-for-sale to Portfolio Loans		7	5
Transfer of Portfolio Loans and Leases to Held-for-sale		60	55
Transfer to Other Real Estate		15	16
Non-cash impact of debt acquired by purchaser in leverage lease sale		$ 0	$ 26

[1] Related to the Company's early adoption of ASU 2016-09, certain prior period amounts have been retrospectively reclassified between operating activities and financing activities.