Consolidated Statements of Cash Flows - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 1,272	$ 1,369
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation, Amortization and Accretion, Net		347	356
Payments to Acquire Mortgage Servicing Rights (MSR)		(146)	(156)
Provisions For Credit Losses And Foreclosed Properties		285	65
Stock Option Compensation And Amortization Of Restricted Stock Compensation		79	87
Debt and Equity Securities, Gain (Loss)		42	(1)
Gain (Loss) on Sale of Loans, Leases, and Other Assets		(200)	(28)
Net decrease/(increase) in loans held for sale		(602)	14
Net decrease/(increase) in Debt Securities, Trading, and Equity Securities, FV-NI		(1,104)	(166)
Net decrease/(increase) in other assets	[1]	(346)	(1,158)
Net increase/(decrease) in Other Operating Liabilities		(446)	409
Net Cash Provided by (Used in) Operating Activities, Continuing Operations		(819)	791
Cash Flows from Investing Activities:
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale		1,946	1,807
Proceeds from Sale of Available-for-sale Securities		3,125	1,920
Payments to Acquire Available-for-sale Securities		(5,116)	(4,081)
Proceeds from (payments for) Originations and Purchases of Loans and Leases Held-for-investment	[1]	5,741	2,150
Proceeds from Sale of Loans Held-for-investment		694	180
Payments for (Proceeds from) Mortgage Servicing Rights		(2)	(60)
Capital expenditures		(146)	(109)
Proceeds from Sale of Other Real Estate		64	102
Payments for (Proceeds from) Other Investing Activities		11	5
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		(5,165)	(2,386)
Cash Flows from Financing Activities:
Net (decrease)/increase in total deposits		(1,457)	668
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings		752	507
Proceeds from Issuance of Long-term Debt		5,800	2,659
Repayment of long-term debt		(788)	(355)
Payments for Repurchase of Preferred Stock and Preference Stock		0	(450)
Payments for Repurchase of Common Stock		(250)	(660)
Common and preferred dividends paid		(495)	(429)
Payments Related to Tax Withholding for Share-based Compensation		(50)	(43)
Proceeds from the exercise of stock options		5	34
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		3,517	1,931
Cash and Cash Equivalents, Period Increase (Decrease)		(2,467)	336
Cash and cash equivalents		7,495	6,912
Cash and cash equivalents		5,028	7,248
Supplemental Disclosures:
Transfer of Loans Held-for-sale to Portfolio Loans		12	18
Transfer of Portfolio Loans and Leases to Held-for-sale		713	327
Transfer to Other Real Estate		23	33
Non-cash impact of debt acquired by purchaser in leverage lease sale		163	$ 0
Interest Received from Sales-Type and Direct Financing Leases		$ 70

[1] Pursuant to the Company’s adoption of ASU 2016-02 on January 1, 2019, it began including the interest portion of lessee payments received from sales-type and direct financing leases, which totaled $70 million for the six months ended June 30, 2019, within operating activities, with the principal portion of lessee payments remaining within investing activities. For periods prior to January 1, 2019, interest payments were not retrospectively reclassified and remain within investing activities. See Note 1, “Significant Accounting Policies,” for additional information.