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Fair Value Measurements - Summary of assets measured at fair value (Details) - Money Market Funds [Member] - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value Of Assets	$ 239.7	$ 240.7
Fair Value, Inputs, Level 1 [Member]
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value Of Assets	239.7	240.7
Fair Value, Inputs, Level 2 [Member]
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value Of Assets	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value Of Assets	$ 0.0	$ 0.0

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- Definition

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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