v3.22.0.1

Investments - Schedule of Contractual Maturities of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Amortized Cost |  |
Due within one year | $ 2,359,069 |
Due in one year to five years | 130,273 |
Due within five to ten years | 13,019 |
Due beyond ten years | 2,540 |
Total, Cost or Amortized Cost | 2,504,901 | $ 3,912,864
Estimated Fair Value |  |
Due within one year | 2,358,792 |
Due in one year to five years | 127,861 |
Due within five to ten years | 12,837 |
Due beyond ten years | 2,514 |
Total, Estimated Fair Value | $ 2,502,004 | $ 3,913,568

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