Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities:
Net Income	$ 1,157	$ 1,048
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	295	196
Adjustment to income tax provision	(13)	(107)
Depreciation	195	173
(Gain) loss on early extinguishment of debt	(1)	172
Amortization of intangibles	74	44
Equity-based compensation expense	65	58
(Gain) loss on securities, net	(45)	1
Net change in operating assets and liabilities:
LHFS	(1,413)	(1,044)
Trading securities	595	(239)
Other assets	(438)	(524)
Accounts payable and other liabilities	282	180
Other, net	108	64
Net cash from operating activities	861	22
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	4,480	754
Proceeds from maturities, calls and paydowns of AFS securities	2,466	2,708
Purchases of AFS securities	(6,912)	(3,486)
Proceeds from maturities, calls and paydowns of HTM securities	2,964	1,733
Purchases of HTM securities	(3,122)	(945)
Originations and purchases of loans and leases, net of principal collected	(1,103)	(1,704)
Net cash received (paid) for acquisitions and divestitures	(789)	1,742
Other, net	(38)	29
Net cash from investing activities	(2,054)	831
Cash Flows From Financing Activities:
Net change in deposits	3,499	277
Net change in short-term borrowings	(3,515)	143
Proceeds from issuance of long-term debt	3,028	1,017
Repayment of long-term debt	(3,008)	(1,266)
Net proceeds from preferred stock issued	450	0
Cash dividends paid on common stock	(439)	(368)
Cash dividends paid on preferred stock	(80)	(74)
Other, net	160	(286)
Net cash from financing activities	95	(557)
Net Change in Cash and Cash Equivalents	(1,098)	296
Cash and Cash Equivalents at Beginning of Period	3,711	2,325
Cash and Cash Equivalents at End of Period	2,613	2,621
Supplemental Disclosure of Cash Flow Information:
Cash paid during the period for interest	395	360
Cash paid during the period for income taxes	263	440
Noncash investing activities:
Transfers of loans to foreclosed assets	229	249
Purchase of additional interest in AmRisc LP Noncash	0	216
Stock issued in business combinations	$ 1,063	$ 322