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Investment Securities - Contractual Maturities and Weighted-Average Yields of Securities (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Securities available for sale |  |
Due in 1 year or less | $ 505 |
Due after 1 year through 5 years | 4,284 |
Due after 5 years through 10 years | 7,747 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 68,887 |
Securities available for sale | 81,423 | $ 79,213
Amortized cost of securities available for sale |  |
Due in 1 year or less | 503 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost | 4,263 |
Due after 5 years through 10 years | 7,574 |
Due 10 Years | 66,260 |
Amortized Cost | $ 78,600 | 77,984
Weighted average yield for securities available for sale |  |
Due in 1 Year or Less | 1.49% |
Due 1 Year through 5 Years | 2.10% |
Due 5 Years through 10 Years | 2.18% |
Due 10 Years | 2.82% |
Total weighted average yield | 2.71% |
U.S. Treasury securities |  |
Securities available for sale |  |
Due in 1 year or less | $ 0 |
Due after 1 year through 5 years | 1,549 |
Due after 5 years through 10 years | 2,811 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 0 |
Securities available for sale | 4,360 | 4,124
Amortized cost of securities available for sale |  |
Amortized Cost | 4,333 | 4,122
RMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 68 |
Due after 5 years through 10 years | 912 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 63,477 |
Securities available for sale | 64,457 | 62,839
Amortized cost of securities available for sale |  |
Amortized Cost | 62,126 | 62,003
RMBS, Non-agency |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 0 |
Due after 5 years through 10 years | 0 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 1,284 |
Securities available for sale | 1,284 | 1,499
Amortized cost of securities available for sale |  |
Amortized Cost | 1,195 | 1,235
RMBS |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 68 |
Due after 5 years through 10 years | 912 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 64,761 |
Securities available for sale | 65,741 | 64,338
Amortized cost of securities available for sale |  |
Amortized Cost | $ 63,321 | 63,238
Weighted average yield for securities available for sale |  |
Weighted-average expected life | 3 years 7 months 6 days |
CMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | $ 6 |
Due after 1 year through 5 years | 2,210 |
Due after 5 years through 10 years | 3,742 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 4,126 |
Securities available for sale | 10,084 | 9,426
Amortized cost of securities available for sale |  |
Amortized Cost | $ 9,707 | 9,303
Weighted average yield for securities available for sale |  |
Weighted-average expected life | 5 years 3 months 18 days |
Other securities |  |
Securities available for sale |  |
Due in 1 year or less | $ 499 |
Due after 1 year through 5 years | 457 |
Due after 5 years through 10 years | 282 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 0 |
Securities available for sale | 1,238 | 1,325
Amortized cost of securities available for sale |  |
Amortized Cost | $ 1,239 | $ 1,321

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