Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details)

Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
On-balance sheet assets
Trading account assets	$ 186,860us-gaap_TradingSecurities	$ 191,785us-gaap_TradingSecurities
Debt securities carried at fair value	324,174bac_DebtSecuritiesCarriedAtFairValue	320,695bac_DebtSecuritiesCarriedAtFairValue
Held-to-maturity securities	59,815us-gaap_HeldToMaturitySecurities	59,766us-gaap_HeldToMaturitySecurities
Loans and leases	877,956	881,391
Allowance for loan and lease losses	(13,676)	(14,419)	(16,618)	(17,428)
All other assets	109,574us-gaap_OtherAssets	112,063us-gaap_OtherAssets
Total assets	2,143,545us-gaap_Assets	2,104,534us-gaap_Assets	2,149,851us-gaap_Assets
On-balance sheet liabilities
Long-term debt	237,858us-gaap_LongTermDebt	243,139us-gaap_LongTermDebt
Total liabilities	1,893,357us-gaap_Liabilities	1,861,063us-gaap_Liabilities
Unpaid principal balance of mortgage loans eligible for repurchase	365	635
Principal amount that would be payable to the securitization vehicles	365	635
Unconsolidated VIEs \| Agency
Variable Interest Entity [Line Items]
Maximum loss exposure	19,523	14,918
On-balance sheet assets
Residual interests held	0	0
All other assets	23	24
Total assets	19,523	14,918
Principal amount outstanding	386,169	397,055
Unconsolidated VIEs \| Agency \| Senior Lien
On-balance sheet assets
Trading account assets	526	584
Debt securities carried at fair value	18,178	13,473
Held-to-maturity securities	796	837
Unconsolidated VIEs \| Agency \| Junior Lien
On-balance sheet assets
Trading account assets	0	0
Debt securities carried at fair value	0	0
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Prime
Variable Interest Entity [Line Items]
Maximum loss exposure	1,223	1,288
On-balance sheet assets
Residual interests held	12	10
All other assets	51	56
Total assets	832	897
Principal amount outstanding	19,304	20,167
Unconsolidated VIEs \| Non-agency \| Prime \| Senior Lien
On-balance sheet assets
Trading account assets	3	3
Debt securities carried at fair value	755	816
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Prime \| Junior Lien
On-balance sheet assets
Trading account assets	0	0
Debt securities carried at fair value	11	12
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Subprime
Variable Interest Entity [Line Items]
Maximum loss exposure	3,089	3,167
On-balance sheet assets
Residual interests held	0	0
All other assets	1	1
Total assets	2,764	2,831
Principal amount outstanding	31,601	32,592
Unconsolidated VIEs \| Non-agency \| Subprime \| Senior Lien
On-balance sheet assets
Trading account assets	25	14
Debt securities carried at fair value	2,716	2,811
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Subprime \| Junior Lien
On-balance sheet assets
Trading account assets	18	0
Debt securities carried at fair value	4	5
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Alt-A Loan
Variable Interest Entity [Line Items]
Maximum loss exposure	654	710
On-balance sheet assets
Residual interests held	0	0
All other assets	225	245
Total assets	654	710
Principal amount outstanding	48,208	50,054
Unconsolidated VIEs \| Non-agency \| Alt-A Loan \| Senior Lien
On-balance sheet assets
Trading account assets	49	81
Debt securities carried at fair value	378	383
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Non-agency \| Alt-A Loan \| Junior Lien
On-balance sheet assets
Trading account assets	2	1
Debt securities carried at fair value	0	0
Held-to-maturity securities	0	0
Unconsolidated VIEs \| Commercial Mortgage
Variable Interest Entity [Line Items]
Maximum loss exposure	324	352
On-balance sheet assets
Residual interests held	41	22
All other assets	0	0
Total assets	278	325
Principal amount outstanding	25,034	20,593
Unconsolidated VIEs \| Commercial Mortgage \| Senior Lien
On-balance sheet assets
Trading account assets	79	54
Debt securities carried at fair value	14	76
Held-to-maturity securities	37	42
Unconsolidated VIEs \| Commercial Mortgage \| Junior Lien
On-balance sheet assets
Trading account assets	39	58
Debt securities carried at fair value	55	58
Held-to-maturity securities	13	15
Consolidated VIEs \| Agency
Variable Interest Entity [Line Items]
Maximum loss exposure	36,644	38,345
On-balance sheet assets
Trading account assets	1,099	1,538
Loans and leases	34,734	36,187
Allowance for loan and lease losses	(2)	(2)
All other assets	815	623
Total assets	36,646	38,346
On-balance sheet liabilities
Long-term debt	2	1
All other liabilities	1	0
Total liabilities	3	1
Consolidated VIEs \| Non-agency \| Prime
Variable Interest Entity [Line Items]
Maximum loss exposure	76	77
On-balance sheet assets
Trading account assets	0	0
Loans and leases	128	130
Allowance for loan and lease losses	0	0
All other assets	6	6
Total assets	134	136
On-balance sheet liabilities
Long-term debt	55	56
All other liabilities	3	3
Total liabilities	58	59
Consolidated VIEs \| Non-agency \| Subprime
Variable Interest Entity [Line Items]
Maximum loss exposure	197	206
On-balance sheet assets
Trading account assets	29	30
Loans and leases	767	768
Allowance for loan and lease losses	0	0
All other assets	14	15
Total assets	810	813
On-balance sheet liabilities
Long-term debt	770	770
All other liabilities	11	13
Total liabilities	781	783
Consolidated VIEs \| Non-agency \| Alt-A Loan
Variable Interest Entity [Line Items]
Maximum loss exposure	0	0
On-balance sheet assets
Trading account assets	0	0
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	0	0
On-balance sheet liabilities
Long-term debt	0	0
All other liabilities	0	0
Total liabilities	0	0
Consolidated VIEs \| Commercial Mortgage
Variable Interest Entity [Line Items]
Maximum loss exposure	0	0
On-balance sheet assets
Trading account assets	0	0
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	0	0
On-balance sheet liabilities
Long-term debt	0	0
All other liabilities	0	0
Total liabilities	$ 0	$ 0