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Cash and Cash Equivalents, and Investments and Fair Value Measurements - Contractual Maturity (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Adjusted Cost
Due in 1 year or less	$ 922,358
Due in 1-2 years	445,326
Investments not due at a single maturity date	228,318
Adjusted Cost	1,596,002
Fair Value
Due in 1 year or less	915,431
Due in 1-2 years	435,413
Investments not due at a single maturity date	228,318
Total, Fair Value	$ 1,579,162

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