Shareholders' Equity (Details - Other Comprehensive Income Activity) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Available-for-sale securities, before tax
Unrealized gains (losses), before tax	$ 300	$ (272)		$ 213
Reclassification into earnings, before tax	32	(42)		(39)
Other comprehensive income, transfers from held-to-maturity to available-for-sale securities, before tax	0	7		0
Net change from available-for-sale securities, before tax	332	(307)		174
Foreign currency translation, before tax
Reclassification into earnings, before tax	0	0		(2)
Available-for-sale securities, tax effect
Unrealized gains (losses), tax effect	(76)	69		(76)
Reclassification into earnings, tax effect	(9)	11		15
Other comprehensive income, transfers from held-to-maturity to available-for-sale securities, tax effect	0	(1)		0
Net change from available-for-sale securities, tax effect	(85)	79		(61)
Foreign currency translation, tax effect
Reclassification into earnings, tax effect	0	0		0
Available-for-sale securities, after tax
Unrealized gains (losses), after tax	224	(203)		137
Reclassification into earnings, after tax	23	(31)		(24)
Transfer of held-to-maturity securities to available-for-sale securities	0	6	[1]	0
Net change from available-for-sale securities	247	(228)		113
Foreign currency translation, after tax
Reclassification into earnings, after tax	0	0		(2)
Other comprehensive income (loss), before tax	332	(307)		172
Other comprehensive income (loss), tax effect	(85)	79		(61)
Other comprehensive income (loss)	$ 247	$ (228)		$ 111

[1] During the year ended December 31, 2018, securities with a carrying value of $4.7 billion and related unrealized pre-tax gain of $7 million, or $6 million net of tax, were transferred from held-to-maturity securities to available-for-sale securities as part of a one-time transition election for early adopting the new derivatives and hedge accounting guidance.