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v3.25.1

Investments - Schedule of Available For Sale Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized Cost |  |
Amortized Cost | $ 6,153,624 | $ 6,231,018
Fair Value |  |
Fair Value | 5,882,359 | 5,876,721
U.S. Treasury securities: |  |
Amortized Cost |  |
Due in 1 year | 245,299 |
Due after 1 but within 5 years | 273,066 |
Due after 5 but within 10 years | 21,754 |
Due after 10 years | 14,478 |
Subtotal | 554,597 |
Amortized Cost | 554,597 | 561,853
Fair Value |  |
Due in 1 year | 244,122 |
Due after 1 but within 5 years | 268,123 |
Due after 5 but within 10 years | 20,207 |
Due after 10 years | 12,810 |
Subtotal | 545,262 |
Fair Value | 545,262 | 547,290
Municipal debt securities |  |
Amortized Cost |  |
Due in 1 year | 31,146 |
Due after 1 but within 5 years | 169,668 |
Due after 5 but within 10 years | 302,786 |
Due after 10 years | 130,561 |
Subtotal | 634,161 |
Amortized Cost | 634,161 | 631,015
Fair Value |  |
Due in 1 year | 31,022 |
Due after 1 but within 5 years | 163,972 |
Due after 5 but within 10 years | 281,001 |
Due after 10 years | 116,566 |
Subtotal | 592,561 |
Fair Value | 592,561 | 583,501
Non-U.S. government securities: |  |
Amortized Cost |  |
Due in 1 year | 460 |
Due after 1 but within 5 years | 32,019 |
Due after 5 but within 10 years | 16,581 |
Due after 10 years | 23,278 |
Subtotal | 72,338 |
Amortized Cost | 72,338 | 81,631
Fair Value |  |
Due in 1 year | 455 |
Due after 1 but within 5 years | 31,168 |
Due after 5 but within 10 years | 13,348 |
Due after 10 years | 16,899 |
Subtotal | 61,870 |
Fair Value | 61,870 | 69,798
Corporate debt securities: |  |
Amortized Cost |  |
Due in 1 year | 207,925 |
Due after 1 but within 5 years | 630,168 |
Due after 5 but within 10 years | 999,926 |
Due after 10 years | 107,139 |
Subtotal | 1,945,158 |
Amortized Cost | 1,945,158 | 1,887,647
Fair Value |  |
Due in 1 year | 206,923 |
Due after 1 but within 5 years | 608,427 |
Due after 5 but within 10 years | 968,511 |
Due after 10 years | 83,630 |
Subtotal | 1,867,491 |
Fair Value | 1,867,491 | 1,783,046
U.S. agency mortgage-backed securities |  |
Amortized Cost |  |
Amortized Cost | 1,254,479 | 1,249,259
Fair Value |  |
Fair Value | 1,165,643 | 1,125,436
Residential and commercial mortgage securities |  |
Amortized Cost |  |
Amortized Cost | 505,931 | 519,613
Fair Value |  |
Fair Value | 470,481 | 478,086
Asset-backed securities |  |
Amortized Cost |  |
Amortized Cost | 754,428 | 642,395
Fair Value |  |
Fair Value | 746,519 | 631,959
Money market funds |  |
Amortized Cost |  |
Amortized Cost | 432,532 | 657,605
Fair Value |  |
Fair Value | $ 432,532 | $ 657,605

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