Investment Securities (Details 3) $ in Millions	Jun. 30, 2023 USD ($)
Cost
Due within 1 year	$ 3,792
Due after 1 year but within 5 years	212
Due after 5 years but within 10 years	41
Due after 10 years	58
Total	4,103
Estimated Fair Value
Due within 1 year	3,751
Due after 1 year but within 5 years	204
Due after 5 years but within 10 years	41
Due after 10 years	49
Total	$ 4,045

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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