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Mergers and Acquisitions - Fair Values of Identifiable Intangible Assets Acquired (Details) - USD ($)
$ in Millions
3 Months Ended
May 02, 2022
Mar. 31, 2023
Dec. 31, 2022
Business Acquisition [Line Items]      
Fair Value   $ 977.6 $ 977.6
Fair Value   991.4 991.3
Customer Relationships [Member]      
Business Acquisition [Line Items]      
Fair Value   $ 862.1 862.1
Useful Lives   15 years  
Trade Names [Member]      
Business Acquisition [Line Items]      
Fair Value   $ 109.5 109.5
Technology [Member]      
Business Acquisition [Line Items]      
Fair Value   $ 6.0 $ 6.0
Useful Lives   7 years  
Agile IWG Holdings, LLC [Member]      
Business Acquisition [Line Items]      
Fair Value $ 19.4    
Agile IWG Holdings, LLC [Member] | Customer Relationships [Member]      
Business Acquisition [Line Items]      
Fair Value $ 16.0    
Useful Lives 15 years    
Agile IWG Holdings, LLC [Member] | Trade Names [Member]      
Business Acquisition [Line Items]      
Fair Value $ 2.3    
Useful Lives 10 years    
Agile IWG Holdings, LLC [Member] | Technology [Member]      
Business Acquisition [Line Items]      
Fair Value $ 1.1    
Useful Lives 7 years