v3.24.4
Investments (Schedule of Maturities and Weighted Average Yields of Available-for-Sale Debt Securities and Held-to-Maturity Debt Securities) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Summary of Investment Holdings [Line Items]    
Available-for-sale investment securities, debt maturities, one year or less, amortized cost $ 2,127  
Available-for-sale investment securities, debt maturities, after one year through five years, amortized cost 10,707  
Available-for-sale investment securities, debt maturities, after five years through ten years, amortized cost 236  
Available-for-sale investment securities, debt maturities, after ten years, amortized cost 381  
Available-for-sale investment securities, amortized cost [1] 13,451 $ 12,167
Held-to-maturity investment securities, debt maturities, one year or less, amortized cost 0  
Held-to-maturity investment securities, debt maturities, after one year through five years, amortized cost 0  
Held-to-maturity investment securities, debt maturities, after five years through ten years, amortized cost 0  
Held-to-maturity investment securities, debt maturities, after ten years, amortized cost 253  
Held-to-maturity investment securities, amortized cost [2] 253 221
Available-for-sale investment securities, debt maturities, one year or less, fair value 2,093  
Available-for-sale investment securities, debt maturities, after one year through five years, fair value 10,698  
Available-for-sale investment securities, debt maturities, after five years through ten years, fair value 241  
Available-for-sale investment securities, debt maturities, after ten years, fair value 370  
Available-for-sale investment securities, fair value [1] 13,402 11,987
Held-to-maturity investment securities, debt maturities, one year or less, fair value 0  
Held-to-maturity investment securities, debt maturities, after one year through five years, fair value 0  
Held-to-maturity investment securities, debt maturities, after five years through ten years, fair value 0  
Held-to-maturity investment securities, debt maturities, after ten years, fair value 234  
Held-to-maturity investment securities, fair value [2] $ 234 199
Available-for-sale investment securities, debt maturities, one year or less, weighted-average yield [3] 2.14%  
Available-for-sale investment securities, debt maturities, after one year through five years, weighted-average yield [3] 3.86%  
Available-for-sale investment securities, debt maturities, after five years through ten years, weighted-average yield [3] 4.26%  
Available-for-sale investment securities, debt maturities, after ten years, weighted-average yield [3] 3.53%  
Available-for-sale investment securities, weighted-average yield [3] 3.58%  
Held-to-maturity investment securities, debt maturities, one year or less, weighted-average yield 0.00%  
Held-to-maturity investment securities, debt maturities, after one year through five years, weighted-average yield 0.00%  
Held-to-maturity investment securities, debt maturities, after five years though ten years, weighted-average yield 0.00%  
Held-to-maturity investment securities, debt maturities, after ten years, weighted-average yield 3.56%  
Held-to-maturity investment securities, weighted-average yield 3.56%  
US Treasury and Government    
Summary of Investment Holdings [Line Items]    
Available-for-sale investment securities, debt maturities, one year or less, amortized cost $ 2,127  
Available-for-sale investment securities, debt maturities, after one year through five years, amortized cost 10,634  
Available-for-sale investment securities, debt maturities, after five years through ten years, amortized cost 210  
Available-for-sale investment securities, debt maturities, after ten years, amortized cost 0  
Available-for-sale investment securities, amortized cost [1] 12,971 11,580
Available-for-sale investment securities, debt maturities, one year or less, fair value 2,093  
Available-for-sale investment securities, debt maturities, after one year through five years, fair value 10,628  
Available-for-sale investment securities, debt maturities, after five years through ten years, fair value 216  
Available-for-sale investment securities, debt maturities, after ten years, fair value 0  
Available-for-sale investment securities, fair value [1] $ 12,937 11,423
Available-for-sale investment securities, debt maturities, one year or less, weighted-average yield [3] 2.14%  
Available-for-sale investment securities, debt maturities, after one year through five years, weighted-average yield [3] 3.87%  
Available-for-sale investment securities, debt maturities, after five years through ten years, weighted-average yield [3] 4.37%  
Available-for-sale investment securities, debt maturities, after ten years, weighted-average yield [3] 0.00%  
Available-for-sale investment securities, weighted-average yield [3] 3.59%  
Residential Mortgage Backed Securities - Agency [Member]    
Summary of Investment Holdings [Line Items]    
Available-for-sale investment securities, debt maturities, one year or less, amortized cost [4] $ 0  
Available-for-sale investment securities, debt maturities, after one year through five years, amortized cost [4] 73  
Available-for-sale investment securities, debt maturities, after five years through ten years, amortized cost [4] 26  
Available-for-sale investment securities, debt maturities, after ten years, amortized cost [4] 381  
Available-for-sale investment securities, amortized cost [1] 480 [4] 587
Held-to-maturity investment securities, debt maturities, one year or less, amortized cost [4] 0  
Held-to-maturity investment securities, debt maturities, after one year through five years, amortized cost [4] 0  
Held-to-maturity investment securities, debt maturities, after five years through ten years, amortized cost [4] 0  
Held-to-maturity investment securities, debt maturities, after ten years, amortized cost [4] 253  
Held-to-maturity investment securities, amortized cost [2],[5] 253 [4] 221
Available-for-sale investment securities, debt maturities, one year or less, fair value [4] 0  
Available-for-sale investment securities, debt maturities, after one year through five years, fair value [4] 70  
Available-for-sale investment securities, debt maturities, after five years through ten years, fair value [4] 25  
Available-for-sale investment securities, debt maturities, after ten years, fair value [4] 370  
Available-for-sale investment securities, fair value [1] 465 [4] 564
Held-to-maturity investment securities, debt maturities, one year or less, fair value [4] 0  
Held-to-maturity investment securities, debt maturities, after one year through five years, fair value [4] 0  
Held-to-maturity investment securities, debt maturities, after five years through ten years, fair value [4] 0  
Held-to-maturity investment securities, debt maturities, after ten years, fair value [4] 234  
Held-to-maturity investment securities, fair value [2],[5] $ 234 [4] $ 199
Available-for-sale investment securities, debt maturities, one year or less, weighted-average yield [3],[4] 0.00%  
Available-for-sale investment securities, debt maturities, after one year through five years, weighted-average yield [3],[4] 2.09%  
Available-for-sale investment securities, debt maturities, after five years through ten years, weighted-average yield [3],[4] 3.35%  
Available-for-sale investment securities, debt maturities, after ten years, weighted-average yield [3],[4] 3.53%  
Available-for-sale investment securities, weighted-average yield [3],[4] 3.30%  
Held-to-maturity investment securities, debt maturities, one year or less, weighted-average yield [4] 0.00%  
Held-to-maturity investment securities, debt maturities, after one year through five years, weighted-average yield [4] 0.00%  
Held-to-maturity investment securities, debt maturities, after five years though ten years, weighted-average yield [4] 0.00%  
Held-to-maturity investment securities, debt maturities, after ten years, weighted-average yield [4] 3.56%  
Held-to-maturity investment securities, weighted-average yield [4] 3.56%  
[1] Available-for-sale investment securities are reported at fair value.
[2] Held-to-maturity investment securities are reported at amortized cost.
[3] The weighted-average yield for available-for-sale investment securities is calculated based on the amortized cost.
[4] Maturities of RMBS are reflective of the contractual maturities of the investment.
[5] Amounts represent residential mortgage-backed securities (“RMBS”) that were classified as held-to-maturity as they were entered into as a part of the Company’s community reinvestment initiatives.