Available-for-sale Securities (Tables)

6 Months Ended

Jun. 30, 2019

Debt Securities, Available-for-sale [Line Items]

Available-for-Sale Securities Reconciliation

Major Security Type. The following table presents information on private-label residential mortgage-backed securities (MBS) that are classified as available-for-sale.

	Amortized     Cost		Other-than-temporary Impairment Recognized in Accumulated Other Comprehensive Income (1)			Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
As of June 30, 2019	$	721	$	(1	)	$	57	$	—	$	777
As of December 31, 2018	$	793	$	(1	)	$	73	$	—	$	865

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⁽¹⁾ Amounts represent the non-credit portion of an other-than-temporary impairment during the life of the security.

Summary of Available-for-Sale MBS Issued by Members or Affiliates of Members

The following table presents private-label residential MBS that are classified as available-for-sale and issued by members or affiliates of members, all of which have been issued by Bank of America Corporation, Charlotte, NC.

	Amortized   Cost		Other-than-temporary Impairment Recognized in Accumulated Other Comprehensive Income (1)		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Estimated   Fair  Value
As of June 30, 2019	$	498	$	—	$	41	$	—	$	539
As of December 31, 2018	$	539	$	—	$	54	$	—	$	593

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⁽¹⁾ Amounts represent the non-credit portion of an other-than-temporary impairment during the life of the security.

Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]

Debt Securities, Available-for-sale [Line Items]

Available-for-Sale Securities with Unrealized Losses

The following table presents private-label residential MBS that are classified as available-for-sale with unrealized losses. The unrealized losses are aggregated by the length of time that the individual securities have been in a continuous unrealized loss position. 

	Less than 12 Months					12 Months or More						Total
	Number of   Positions	Estimated   Fair  Value		Gross   Unrealized   Losses		Number of   Positions	Estimated   Fair  Value		Gross   Unrealized   Losses			Number of   Positions	Estimated   Fair  Value		Gross   Unrealized   Losses
As of June 30, 2019	1	$	3	$	—	2	$	4	$	(1	)	3	$	7	$	(1	)
As of December 31, 2018	1	$	3	$	—	2	$	4	$	(1	)	3	$	7	$	(1	)