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Investment Securities - Contractual Maturities and Weighted-Average Yields of Securities (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Securities available for sale |  |
Due in 1 year or less | $ 952 |
Due after 1 year through 5 years | 14,293 |
Due after 5 years through 10 years | 6,538 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 77,382 |
Securities available for sale | 99,165 | $ 100,445
Amortized cost of securities available for sale |  |
Due in 1 year or less | 949 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost | 14,206 |
Due after 5 years through 10 years | 6,411 |
Due > 10 Years | 76,236 |
Amortized Cost | $ 97,802 | 97,569
Weighted average yield for securities available for sale |  |
Due in 1 Year or Less | 0.97% |
Due > 1 Year through 5 Years | 0.52% |
Due > 5 Years through 10 Years | 1.62% |
Due > 10 Years | 1.80% |
Total weighted average yield | 1.59% |
U.S. Treasury securities |  |
Securities available for sale |  |
Due in 1 year or less | $ 201 |
Due after 1 year through 5 years | 9,047 |
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 | 0 |
Securities available for sale | 9,248 | 9,318
Amortized cost of securities available for sale |  |
Amortized Cost | 9,222 | 9,302
RMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 71 |
Due after 5 years through 10 years | 1,210 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 73,164 |
Securities available for sale | 74,445 | 75,466
Amortized cost of securities available for sale |  |
Amortized Cost | 73,579 | 73,248
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 | 1,177 |
Securities available for sale | 1,177 | 1,237
Amortized cost of securities available for sale |  |
Amortized Cost | 973 | 1,035
RMBS |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 71 |
Due after 5 years through 10 years | 1,210 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 74,341 |
Securities available for sale | 75,622 | 76,703
Amortized cost of securities available for sale |  |
Amortized Cost | $ 74,552 | 74,283
Weighted average yield for securities available for sale |  |
Weighted-average expected life | 5 years 9 months 18 days |
CMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | $ 209 |
Due after 1 year through 5 years | 2,961 |
Due after 5 years through 10 years | 5,063 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 3,041 |
Securities available for sale | 11,274 | 11,735
Amortized cost of securities available for sale |  |
Amortized Cost | $ 11,015 | 11,298
Weighted average yield for securities available for sale |  |
Weighted-average expected life | 5 years 7 months 6 days |
Other securities |  |
Securities available for sale |  |
Due in 1 year or less | $ 542 |
Due after 1 year through 5 years | 2,214 |
Due after 5 years through 10 years | 265 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 0 |
Securities available for sale | 3,021 | 2,689
Amortized cost of securities available for sale |  |
Amortized Cost | $ 3,013 | $ 2,686

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