Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:
Net income including noncontrolling interests	$ 415	$ 283
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Reversal of) provision for loan losses	(7)	(6)
(Reversal of) provision for losses on unfunded credit commitments	13	13
Depreciation, amortization and accretion, net	201	229
Stock-based compensation-restricted stock units	13	10
Deferred income taxes	71	(28)
Net gains on sales of securities	(3)	(123)
Net decrease (increase) in trading account assets	(90)	364
Net decrease (increase) in other assets	106	145
Net increase (decrease) in trading account liabilities	124	(329)
Net increase (decrease) in other liabilities	(211)	64
Loans originated for sale	(96)	(52)
Net proceeds from sale of loans originated for sale	181	76
Pension and other benefits adjustment	(91)	(347)
Other, net	(9)	(9)
Total adjustments	202	7
Net cash provided by (used in) operating activities	617	290
Cash Flows from Investing Activities:
Proceeds from sales of securities available for sale	598	5,585
Proceeds from paydowns and maturities of securities available for sale	1,169	2,015
Purchases of securities available for sale and held to maturity	(2,426)	(9,996)
Proceeds from paydowns and maturities of securities held to maturity	374	212
Purchases of premises and equipment	(45)	(53)
Proceeds from sales of loans	190	199
Net decrease (increase) in loans	(4,270)	(2,640)
Proceeds from FDIC loss share agreements	(11)	7
Net cash paid for acquisitions		(3,688)
Other, net	(270)	13
Net cash provided by (used in) investing activities	(4,691)	(8,346)
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	1,465	3,052
Net increase (decrease) in commercial paper and other short-term borrowings	307	2,429
Proceeds from issuance of subordinated debt due to BTMU		750
Proceeds from issuance of long-term debt	749
Repayment of long-term debt	(300)	(300)
Other, net	(21)	(25)
Change in noncontrolling interests		13
Net cash provided by (used in) financing activities	2,200	5,919
Net change in cash and cash equivalents	(1,874)	(2,137)
Cash and cash equivalents at beginning of period	6,203	5,491
Cash and cash equivalents at end of period	4,329	3,354
Cash Paid During the Period For:
Interest	210	204
Income taxes, net	(13)	21
Supplemental Schedule of Noncash Investing and Financing Activities:
Net transfer of loans held for investment to loans held for sale	199	214
Transfer of loans held for investment to other real estate owned assets (OREO)		$ 17