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Cash and Cash Equivalents, and Investments and Fair Value Measurements - Contractual Maturity (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Cash and Cash Equivalents [Abstract]
Due in 1 year or less, Cost	$ 692,320
Due in 1-2 years, Cost	749,377
Investments not due at a single maturity date, Cost	823,754
Adjusted Cost	2,265,451
Due in 1 year or less, Fair Value	691,781
Due in 1-2 years, Fair Value	745,993
Investments not due at a single maturity date, Fair Value	823,754
Total, Fair Value	$ 2,261,528

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Available-For-Sale Securities, Debt Maturities, Year One Through Two, Amortized Cost Basis

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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