Debt Obligations - Schedule of Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Jun. 28, 2024	Dec. 31, 2023	Dec. 31, 2021	Feb. 01, 2021
Debt Instrument [Line Items]
Obligations under finance leases	$ 0.6		$ 2.4
Total aggregate finance lease and debt payments	668.3		722.8
Unamortized issuance discount, issuance premium, and deferred financing costs	(5.5)		(13.0)
Less: current portion of debt obligations	(162.2)		(30.5)
Debt obligations, net of current portion	500.6		679.3
Infrastructure
Debt Instrument [Line Items]
Obligations under finance leases	0.6		2.4
Total aggregate finance lease and debt payments	$ 144.7		198.8
Infrastructure | DBM Global Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	3.25%
Infrastructure | PRIME minus 0.75% Line of Credit due 2025 | Line of Credit | DBM Global Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Outstanding debt	$ 45.0		100.0
Infrastructure | 3.25% Term Loan due 2026 | Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	3.25%
Infrastructure | 3.25% Term Loan due 2026 | Term Loan | DBM Global Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	3.25%
Outstanding debt	$ 74.6		91.4
Infrastructure | PRIME minus 0.75% Term Loan due 2026 | Line of Credit | DBM Global Credit Facilities | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Outstanding debt	$ 24.5		$ 0.0
Infrastructure | PRIME minus 0.75% Term Loan due 2026 | Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding debt		$ 25.0
Infrastructure | 4.00% Note due 2024 | Term Loan
Debt Instrument [Line Items]
Interest rate			4.00%
Outstanding debt	0.0		$ 5.0
Spectrum
Debt Instrument [Line Items]
Total aggregate finance lease and debt payments	$ 69.7		69.7
Spectrum | 8.50% Note due 2025
Debt Instrument [Line Items]
Interest rate	8.50%
Outstanding debt	$ 19.3		19.3
Spectrum | 11.45% Notes due 2025
Debt Instrument [Line Items]
Interest rate	11.45%
Outstanding debt	$ 50.4		50.4
Life Sciences
Debt Instrument [Line Items]
Outstanding debt	31.9
Total aggregate finance lease and debt payments			17.4
Less: current portion of debt obligations	$ (24.0)
Life Sciences | 20.00% Notes due 2025
Debt Instrument [Line Items]
Interest rate	20.00%
Short-term debt	$ 24.0		17.4
Non-Operating Corporate
Debt Instrument [Line Items]
Total aggregate finance lease and debt payments	$ 429.9		436.9
Non-Operating Corporate | 8.50% Senior Secured Notes due 2026
Debt Instrument [Line Items]
Interest rate				8.50%
Non-Operating Corporate | 8.50% Senior Secured Notes due 2026 | Secured Debt
Debt Instrument [Line Items]
Interest rate	8.50%			8.50%	8.50%
Outstanding debt	$ 330.0		330.0
Non-Operating Corporate | 7.50% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate	7.50%			7.50%
Outstanding debt	$ 48.9		51.8
Non-Operating Corporate | SOFR plus 5.75% Line of Credit due 2025
Debt Instrument [Line Items]
Basis spread on variable rate	5.75%
Outstanding debt	$ 20.0		20.0
Non-Operating Corporate | CGIC Unsecured Note due 2026
Debt Instrument [Line Items]
Outstanding debt	$ 31.0		$ 35.1