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

Commitments and Contingencies - Other Commitments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Liquefied Natural Gas Commodities
Loss Contingencies [Line Items]
Other commitments	$ 1,100	$ 1,300
Forward-Dated Securities Agreements
Loss Contingencies [Line Items]
Other commitment, period	21 months
Forward-Dated Resale and Securities Borrowing Agreements
Loss Contingencies [Line Items]
Other commitments	$ 82,100	59,700
Forward-Dated Repurchase and Securities Lending Agreements
Loss Contingencies [Line Items]
Other commitments	52,000	21,200
Auto Loans and Leases
Loss Contingencies [Line Items]
Other commitment, due in next twelve months	$ 3,100	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	$ 426	329
Commercial Portfolio Segment \| Loan Purchase Commitments
Loss Contingencies [Line Items]
Other commitments	$ 270	$ 463