Business Segment Information (Details)

Business Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	$ 9,670	$ 10,286
Noninterest income	11,751us-gaap_NoninterestIncome	12,481us-gaap_NoninterestIncome
Total revenue, net of interest expense (FTE basis)	21,421	22,767
Provision for credit losses	765	1,009
Noninterest expense	15,695	22,238
Income (loss) before income taxes (FTE basis)	4,961	(480)
Income tax expense (benefit) (FTE basis)	1,604	(204)
Net income (loss)	3,357us-gaap_NetIncomeLoss	(276)us-gaap_NetIncomeLoss
Period-end total assets	2,143,545us-gaap_Assets	2,149,851us-gaap_Assets	2,104,534us-gaap_Assets
Operating Segments
Segment Reporting Information [Line Items]
Total revenue, net of interest expense (FTE basis)	21,773	22,436
Net income (loss)	4,198	(79)
Period-end total assets	1,894,777	1,870,866
Operating Segments \| Consumer Banking
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	4,871	5,071
Noninterest income	2,579	2,580
Total revenue, net of interest expense (FTE basis)	7,450	7,651
Provision for credit losses	716	809
Noninterest expense	4,389	4,495
Income (loss) before income taxes (FTE basis)	2,345	2,347
Income tax expense (benefit) (FTE basis)	870	879
Net income (loss)	1,475	1,468
Period-end total assets	613,130	586,472
Operating Segments \| Global Wealth & Investment Management
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	1,351	1,485
Noninterest income	3,166	3,062
Total revenue, net of interest expense (FTE basis)	4,517	4,547
Provision for credit losses	23	23
Noninterest expense	3,459	3,359
Income (loss) before income taxes (FTE basis)	1,035	1,165
Income tax expense (benefit) (FTE basis)	384	436
Net income (loss)	651	729
Period-end total assets	272,777	271,211
Operating Segments \| Global Banking
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	2,265	2,507
Noninterest income	2,024	2,028
Total revenue, net of interest expense (FTE basis)	4,289	4,535
Provision for credit losses	96	281
Noninterest expense	2,022	2,190
Income (loss) before income taxes (FTE basis)	2,171	2,064
Income tax expense (benefit) (FTE basis)	806	773
Net income (loss)	1,365	1,291
Period-end total assets	368,595	359,786
Operating Segments \| Global Markets
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	1,004	1,002
Noninterest income	3,599	4,015
Total revenue, net of interest expense (FTE basis)	4,603	5,017
Provision for credit losses	21	19
Noninterest expense	3,120	3,075
Income (loss) before income taxes (FTE basis)	1,462	1,923
Income tax expense (benefit) (FTE basis)	517	610
Net income (loss)	945	1,313
Period-end total assets	586,737	594,792
Operating Segments \| Legacy Assets & Servicing
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	428	377
Noninterest income	486	309
Total revenue, net of interest expense (FTE basis)	914	686
Provision for credit losses	91	12
Noninterest expense	1,201	7,401
Income (loss) before income taxes (FTE basis)	(378)	(6,727)
Income tax expense (benefit) (FTE basis)	(140)	(1,847)
Net income (loss)	(238)	(4,880)
Period-end total assets	53,538	58,605
All Other
Segment Reporting Information [Line Items]
Net interest income (FTE basis)	(249)	(156)
Noninterest income	(103)	487
Total revenue, net of interest expense (FTE basis)	(352)	331
Provision for credit losses	(182)	(135)
Noninterest expense	1,504	1,718
Income (loss) before income taxes (FTE basis)	(1,674)	(1,252)
Income tax expense (benefit) (FTE basis)	(833)	(1,055)
Net income (loss)	(841)	(197)
Period-end total assets	$ 248,768	$ 278,985

Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information (Details)