Available-for-Sale and Held-to-Maturity Securities (Details - Other) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Net impairment			$ 0	$ 0
Agency securities as the percentage of the amortized cost of the total investment securities portfolio	96.00%		96.00%		99.00%
Components of gains (losses) on securities and other, net
Debt Securities, Available-for-sale, Realized Gain	$ 38	$ 15	$ 57	26
Losses on available-for-sale securities	(15)	(80)	(15)	(80)
Debt Securities, Available-for-sale, Realized Gain (Loss)	23	(65)	42	(54)
Equity method investment income and other	0	1	1	1
Gains (losses) on securities and other, net	23	(64)	43	(53)
Losses on available-for-sale securities	15	80	15	80
Investment Sold Amount	$ 571	$ 4,500	$ 571	$ 4,500

Represents the agency securities as a percentage of the amortized cost of the total investment securities portfolio.

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Investment Sold Amount

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- Definition

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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