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Operating Segments and Related Information - Schedule of Segment Reporting for Long-term investments, Property and Equipment (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]    
Investments $ 1.8 $ 1.8
Assets 943.5 1,043.6
Operating Segments | Infrastructure    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Assets 746.6 851.4
Operating Segments | Life Sciences    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Investments 1.8 1.8
Equity method investments 0.9 0.9
Assets 8.2 8.3
Operating Segments | Spectrum    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Assets 175.5 176.6
Non-Operating Corporate    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Assets $ 13.2 $ 7.3