Investment Securities (Details 3) $ in Millions	Sep. 30, 2022 USD ($)
Cost
Due within 1 year	$ 2,359
Due after 1 year but within 5 years	2,137
Due after 5 years but within 10 years	30
Due after 10 years	61
Total	4,587
Estimated Fair Value
Due within 1 year	2,328
Due after 1 year but within 5 years	2,088
Due after 5 years but within 10 years	30
Due after 10 years	50
Total	$ 4,496

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