| Contractual Maturities of Investment in Available-for-Sale Debt Securities (Excluding Mortgage-Backed | |||||
| and Asset-Backed Securities) | |||||
| Amortized | Estimated | ||||
| (In millions) | cost | fair value | |||
| Due | |||||
| Within one year | $ | 2,397 | $ | 2,417 | |
| After one year through five years | 3,303 | 3,506 | |||
| After five years through ten years | 4,984 | 5,156 | |||
| After ten years | 18,024 | 19,901 | |||