Bank of America Corporation Annual report pursuant to Section 13 and 15(d)

Fair Value Option - Gains (Losses) Relating to Assets and Liabilities (Details)

Fair Value Option - Gains (Losses) Relating to Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	$ 3,229	$ 774	$ 2,671
Federal funds sold and securities borrowed or purchased under agreements to resell
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(57)	(63)	(195)
Loans reported as trading account assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	318	301	(199)
Trading inventory – other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	3,821	57	1,284
Consumer and commercial loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	26	12	(243)
Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	298	535	700
Unfunded loan commitments
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	36	487	(210)
Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(1,190)	(586)	1,474
Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(23)	31	60
Trading Account Profits
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	2,993	(156)	3,050
Trading Account Profits \| Federal funds sold and securities borrowed or purchased under agreements to resell
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(57)	(64)	(195)
Trading Account Profits \| Loans reported as trading account assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	318	301	(199)
Trading Account Profits \| Trading inventory – other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	3,821	57	1,284
Trading Account Profits \| Consumer and commercial loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(9)	49	52
Trading Account Profits \| Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	11	(36)
Trading Account Profits \| Unfunded loan commitments
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Trading Account Profits \| Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(1,044)	(489)	2,107
Trading Account Profits \| Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(36)	(21)	37
Mortgage Banking Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	211	518	673
Mortgage Banking Income \| Federal funds sold and securities borrowed or purchased under agreements to resell
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Loans reported as trading account assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Trading inventory – other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Consumer and commercial loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	211	518	673
Mortgage Banking Income \| Unfunded loan commitments
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Mortgage Banking Income \| Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Other Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	25	412	(1,052)
Other Income \| Federal funds sold and securities borrowed or purchased under agreements to resell
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	1	0
Other Income \| Loans reported as trading account assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Other Income \| Trading inventory – other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	0	0	0
Other Income \| Consumer and commercial loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	35	(37)	(295)
Other Income \| Loans held-for-sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	87	6	63
Other Income \| Unfunded loan commitments
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	36	487	(210)
Other Income \| Long-term debt
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	(146)	(97)	(633)
Other Income \| Other
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) relating to assets and liabilities accounted for under the fair value option	$ 13	$ 52	$ 23