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Goodwill and Intangible Assets - Changes in Carrying Amounts of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions					3 Months Ended			9 Months Ended
	Feb. 29, 2024	Sep. 30, 2023	Mar. 31, 2023	Jan. 01, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Goodwill [Line Items]
Gross goodwill					$ 2,163.4			$ 2,163.4		$ 2,161.2
Less: impairment charges					(1,423.7)			(1,423.7)		(708.8)
Goodwill [Roll Forward]
Goodwill, beginning balance								1,452.4
Impairment of goodwill					(141.7)	$ (165.7)		(714.9)	$ (708.8)
Foreign currency translation								2.2
Goodwill, ending balance					739.7			739.7
Previously Reported
Goodwill [Line Items]
Gross goodwill					3,045.3			3,045.3
Less: impairment charges					(2,305.6)			(2,305.6)
Public Cloud
Goodwill [Line Items]
Gross goodwill					597.5			597.5		597.7
Less: impairment charges					(454.6)			(454.6)		0.0
Goodwill [Roll Forward]
Goodwill, beginning balance								597.7
Impairment of goodwill	$ (385.4)				(69.2)			(454.6)
Foreign currency translation								(0.2)
Goodwill, ending balance					142.9			142.9
Private Cloud
Goodwill [Line Items]
Gross goodwill					1,565.9			1,565.9		1,563.5
Less: impairment charges					(969.1)			(969.1)		$ (708.8)
Goodwill [Roll Forward]
Goodwill, beginning balance								854.7
Impairment of goodwill	$ (187.8)	$ (165.7)	$ (272.3)	$ (270.8)	(72.5)		$ (270.8)	(260.3)
Foreign currency translation								2.4
Goodwill, ending balance					$ 596.8			$ 596.8