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Supplemental Financial Statement Information - Severance and Employee Benefit Costs Rollforward (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) segment
Other Income and Expenses [Abstract]
Number of positions with decreased severance-related reserve | segment		(30)		(50)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2022			$ 9.8
Restructuring charges (credits)	$ 2.7	$ (1.3)	2.7	$ (2.4)
Payments			(0.8)
Balance at June 30, 2023	$ 11.7		$ 11.7

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Restructuring And Related Costs, Number Of Positions With Decreased Severance-Related Reserve

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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