Outstanding Loans and Leases - Nonperforming (Details)

Outstanding Loans and Leases - Nonperforming (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold period past due for nonperforming status of financing receivables	90 days
Loans and leases	$ 877,956		$ 881,391
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	17,061		19,754
Proceeds from sales	5,781	4,508
Purchased credit impaired loans sold	586	454
Nonperforming loans and leases	11,205		11,932
Accruing past due 90 days or more	10,968		12,654
Nonaccruing troubled debt restructurings excluded from nonperforming loans	86		102
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing past due 90 days or more	3,700		4,100
Federal Housing Administration \| Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonperforming loans and leases	6,200		7,300
Nonperforming Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Proceeds from sales	1,000	730
Valuation Allowances and Reserves, Recoveries	40
Nonperforming Financing Receivable \| Junior Lien Home Equity Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	657		800
Chapter Seven Bankruptcy
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	2,300
Chapter Seven Bankruptcy \| Nonperforming Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	1,100
Non-performing troubled debt with no change in repayment terms at time of discharge, current with contractual payments	660
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	354
Nonperforming loans discharged more than twelve months prior	80.00%
Nonperforming loans discharged more than twenty four months prior	60.00%
Consumer Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	474,482		488,570
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	16,557		19,012
Nonperforming loans and leases	10,209		10,819
Accruing past due 90 days or more	10,847		12,433
Consumer Real Estate \| Junior Lien Home Equity Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold period past due for nonperforming status of financing receivables	90 days
Consumer Real Estate \| Core Portfolio, Residential Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	156,888		162,220
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	5,000		5,561
Nonperforming loans and leases	2,278		2,398
Accruing past due 90 days or more	3,573		3,942
Consumer Real Estate \| Core Portfolio, Home Equity Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	51,029		51,887
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	754		744
Nonperforming loans and leases	1,473		1,496
Accruing past due 90 days or more	0		0
Consumer Real Estate \| Legacy Assets and Servicing Portfolio, Residential Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	36,852		38,825
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	8,697		10,513
Nonperforming loans and leases	4,143		4,491
Accruing past due 90 days or more	6,339		7,465
Consumer Real Estate \| Legacy Assets and Servicing Portfolio, Home Equity Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	27,188		28,221
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	1,169		1,166
Nonperforming loans and leases	2,286		2,405
Accruing past due 90 days or more	0		0
Credit card and other consumer \| Credit Card Receivable \| United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	87,288		91,879
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	795		866
Accruing past due 90 days or more	795		866
Credit card and other consumer \| Credit Card Receivable \| Non United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	9,660		10,465
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	88		95
Accruing past due 90 days or more	88		95
Credit card and other consumer \| Direct/Indirect Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	82,141		80,381
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	53		65
Nonperforming loans and leases	28		28
Accruing past due 90 days or more	51		64
Credit card and other consumer \| Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	1,842		1,846
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	1		2
Nonperforming loans and leases	1		1
Accruing past due 90 days or more	1		1
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold period past due for nonperforming status of financing receivables	90 days
Loans and leases	403,474		392,821
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	504		742
Nonperforming loans and leases	996		1,113
Accruing past due 90 days or more	121		221
Commercial \| United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	225,081		220,293
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	269		318
Nonperforming loans and leases	680		701
Accruing past due 90 days or more	22		110
Commercial \| Non United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	84,842		80,083
Nonperforming loans and leases	79		1
Accruing past due 90 days or more	0		0
Commercial \| Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	49,446		47,682
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	137		288
Nonperforming loans and leases	132		321
Accruing past due 90 days or more	25		3
Commercial \| Commercial Real Estate \| United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	46,700		45,200
Commercial \| Commercial Real Estate \| Non United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	2,800		2,500
Commercial \| Commercial Lease Financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	24,468		24,866
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	14		42
Nonperforming loans and leases	16		3
Accruing past due 90 days or more	9		41
Commercial \| Small Business Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-performing troubled debt with no change in repayment terms at time of discharge, 90 days or more past due	84		94
Nonperforming loans and leases	89		87
Accruing past due 90 days or more	65		67
Commercial \| Small Business Commercial \| United States
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	13,226		13,293
Noninterest income \| Nonperforming Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Gain (loss) on sale	$ 35

Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Nonperforming (Details)