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Restructuring Activities - Schedule of Liability Balance Associated with Major Cash-based Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Mar. 31, 2023	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Expense incurred	$ 2.3	$ 147.2
Employee separation benefits
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2023			$ 13.0
Expense incurred			80.0
Payments made			(59.0)
Balance at June 30, 2024	34.0		34.0
Professional fees and other
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2023			0.0
Expense incurred			26.0
Payments made			(5.0)
Balance at June 30, 2024	$ 21.0		$ 21.0