v3.25.2
AVAILABLE-FOR-SALE SECURITIES, Contractual Maturities (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Sep. 30, 2024
Amortized cost    
Within one year $ 607  
After one but within five years 1,206  
After five but within ten years 1,828  
After ten years 4,116  
Cost basis 7,757 $ 8,906
Fair value    
Within one year 601  
After one but within five years 1,165  
After five but within ten years 1,687  
After ten years 3,712  
Total $ 7,165 8,260
Weighted-average yield    
Within one year (as a percent) 2.88%  
After one but within five years (as a percent) 2.52%  
After five but within ten years (as a percent) 1.36%  
After ten years (as a percent) 2.45%  
Total (as a percent) 2.24%  
Agency residential MBS    
Amortized cost    
Within one year $ 0  
After one but within five years 125  
After five but within ten years 1,385  
After ten years 2,183  
Cost basis 3,693 4,147
Fair value    
Within one year 0  
After one but within five years 120  
After five but within ten years 1,295  
After ten years 1,981  
Total $ 3,396 3,823
Weighted-average yield    
Within one year (as a percent) 0.00%  
After one but within five years (as a percent) 1.77%  
After five but within ten years (as a percent) 1.29%  
After ten years (as a percent) 2.22%  
Total (as a percent) 1.86%  
Agency commercial MBS    
Amortized cost    
Within one year $ 236  
After one but within five years 636  
After five but within ten years 362  
After ten years 48  
Cost basis 1,282 1,415
Fair value    
Within one year 231  
After one but within five years 601  
After five but within ten years 314  
After ten years 38  
Total $ 1,184 1,296
Weighted-average yield    
Within one year (as a percent) 1.67%  
After one but within five years (as a percent) 1.43%  
After five but within ten years (as a percent) 1.21%  
After ten years (as a percent) 1.86%  
Total (as a percent) 1.43%  
Agency CMOs    
Amortized cost    
Within one year $ 0  
After one but within five years 0  
After five but within ten years 26  
After ten years 1,368  
Cost basis 1,394 1,394
Fair value    
Within one year 0  
After one but within five years 0  
After five but within ten years 24  
After ten years 1,211  
Total $ 1,235 1,225
Weighted-average yield    
Within one year (as a percent) 0.00%  
After one but within five years (as a percent) 0.00%  
After five but within ten years (as a percent) 1.43%  
After ten years (as a percent) 2.17%  
Total (as a percent) 2.16%  
U.S. Treasuries    
Amortized cost    
Within one year $ 178  
After one but within five years 253  
After five but within ten years 0  
After ten years 0  
Cost basis 431 706
Fair value    
Within one year 178  
After one but within five years 254  
After five but within ten years 0  
After ten years 0  
Total $ 432 704
Weighted-average yield    
Within one year (as a percent) 4.43%  
After one but within five years (as a percent) 4.29%  
After five but within ten years (as a percent) 0.00%  
After ten years (as a percent) 0.00%  
Total (as a percent) 4.35%  
Other agency obligations    
Amortized cost    
Within one year $ 189  
After one but within five years 129  
After five but within ten years 28  
After ten years 8  
Cost basis 354 565
Fair value    
Within one year 188  
After one but within five years 127  
After five but within ten years 28  
After ten years 8  
Total $ 351 559
Weighted-average yield    
Within one year (as a percent) 2.85%  
After one but within five years (as a percent) 3.77%  
After five but within ten years (as a percent) 2.42%  
After ten years (as a percent) 3.07%  
Total (as a percent) 3.16%  
Non-agency residential MBS    
Amortized cost    
Within one year $ 0  
After one but within five years 0  
After five but within ten years 0  
After ten years 499  
Cost basis 499 553
Fair value    
Within one year 0  
After one but within five years 0  
After five but within ten years 0  
After ten years 463  
Total $ 463 527
Weighted-average yield    
Within one year (as a percent) 0.00%  
After one but within five years (as a percent) 0.00%  
After five but within ten years (as a percent) 0.00%  
After ten years (as a percent) 4.18%  
Total (as a percent) 4.18%  
Corporate bonds    
Amortized cost    
Within one year $ 4  
After one but within five years 63  
After five but within ten years 22  
After ten years 0  
Cost basis 89 107
Fair value    
Within one year 4  
After one but within five years 63  
After five but within ten years 22  
After ten years 0  
Total $ 89 106
Weighted-average yield    
Within one year (as a percent) 5.71%  
After one but within five years (as a percent) 5.40%  
After five but within ten years (as a percent) 5.02%  
After ten years (as a percent) 0.00%  
Total (as a percent) 5.32%  
Other investments    
Amortized cost    
Within one year $ 0  
After one but within five years 0  
After five but within ten years 5  
After ten years 10  
Cost basis 15 19
Fair value    
Within one year 0  
After one but within five years 0  
After five but within ten years 4  
After ten years 11  
Total $ 15 $ 20
Weighted-average yield    
Within one year (as a percent) 0.00%  
After one but within five years (as a percent) 0.00%  
After five but within ten years (as a percent) 6.99%  
After ten years (as a percent) 6.92%  
Total (as a percent) 6.94%