Bank of America Corporation Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Other Commitments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Liquefied Natural Gas Commodities
Loss Contingencies [Line Items]
Other commitments	$ 976	$ 1,300
Forward-Dated Securities Agreements
Loss Contingencies [Line Items]
Other commitment, period	15 months
Forward-Dated Resale and Securities Borrowing Agreements
Loss Contingencies [Line Items]
Other commitments	$ 119,700	59,700
Forward-Dated Repurchase and Securities Lending Agreements
Loss Contingencies [Line Items]
Other commitments	64,400	21,200
Auto Loans and Leases
Loss Contingencies [Line Items]
Other commitment, due in next twelve months	$ 3,200	3,000
Other commitment, termination prior notice period	12 months
Residential and Commercial Portfolio Segments \| Residential and Commercial Financing Receivable \| Loan Purchase Commitments
Loss Contingencies [Line Items]
Other commitments	$ 135	329
Commercial Portfolio Segment \| Loan Purchase Commitments
Loss Contingencies [Line Items]
Other commitments	$ 464	$ 463