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Investment Securities - Contractual Maturities and Weighted-Average Yields of Securities (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Securities available for sale |  |
Due in 1 year or less | $ 2,098 |
Due after 1 year through 5 years | 13,153 |
Due after 5 years through 10 years | 6,540 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 79,975 |
Securities available for sale | 101,766 | $ 100,445
Amortized cost of securities available for sale |  |
Due in 1 year or less | 2,096 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost | 13,087 |
Due after 5 years through 10 years | 6,376 |
Due > 10 Years | 78,777 |
Amortized Cost | $ 100,336 | 97,569
Weighted average yield for securities available for sale |  |
Due in 1 Year or Less | 0.66% |
Due > 1 Year through 5 Years | 0.53% |
Due > 5 Years through 10 Years | 1.51% |
Due > 10 Years | 1.77% |
Total weighted average yield | 1.57% |
U.S. Treasury securities |  |
Securities available for sale |  |
Due in 1 year or less | $ 1,401 |
Due after 1 year through 5 years | 7,830 |
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 | 9,231 | 9,318
Amortized cost of securities available for sale |  |
Amortized Cost | 9,211 | 9,302
RMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 97 |
Due after 5 years through 10 years | 1,139 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 75,970 |
Securities available for sale | 77,206 | 75,466
Amortized cost of securities available for sale |  |
Amortized Cost | 76,318 | 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 | 1,116 |
Securities available for sale | 1,116 | 1,237
Amortized cost of securities available for sale |  |
Amortized Cost | 908 | 1,035
RMBS |  |
Securities available for sale |  |
Due in 1 year or less | 0 |
Due after 1 year through 5 years | 97 |
Due after 5 years through 10 years | 1,139 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 77,086 |
Securities available for sale | 78,322 | 76,703
Amortized cost of securities available for sale |  |
Amortized Cost | $ 77,226 | 74,283
Weighted average yield for securities available for sale |  |
Weighted-average expected life | 5 years 4 months 24 days |
CMBS, Agency |  |
Securities available for sale |  |
Due in 1 year or less | $ 399 |
Due after 1 year through 5 years | 2,666 |
Due after 5 years through 10 years | 5,133 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 2,889 |
Securities available for sale | 11,087 | 11,735
Amortized cost of securities available for sale |  |
Amortized Cost | $ 10,781 | 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 | $ 298 |
Due after 1 year through 5 years | 2,560 |
Due after 5 years through 10 years | 268 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 0 |
Securities available for sale | 3,126 | 2,689
Amortized cost of securities available for sale |  |
Amortized Cost | $ 3,118 | $ 2,686

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