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Investment Securities (Details 3) $ in Millions | Mar. 31, 2019 USD ($)
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Available For Sale Securities Debt Maturities Amortized Cost [Abstract] |
Due within 1 year | $ 4,599
Due after 1 year but within 5 years | 1,315
Due after 5 years but within 10 years | 179
Due after 10 years | 305
Total | 6,398
Estimated Fair Value |
Estimated Fair Value, Due within 1 year | 4,600
Estimated Fair Value, Due after 1 year but within 5 years | 1,319
Estimated Fair Value, Due after 5 years but within 10 years | 181
Estimated Fair Value, Due after 10 years | 310
Total | $ 6,410

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