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Mergers and Acquisitions - Fair Values of Identifiable Intangible Assets Acquired (Details) - USD ($)
$ in Millions
9 Months Ended
May 02, 2022
Sep. 07, 2021
Sep. 30, 2022
Dec. 31, 2021
Business Acquisition [Line Items]        
Fair Value   $ 963.0 $ 976.8 $ 963.0
Fair Value   6.6    
Fair Value     983.7 969.7
Customer Relationships [Member]        
Business Acquisition [Line Items]        
Fair Value     $ 861.4 850.0
Useful Lives     15 years  
Trade Names [Member]        
Business Acquisition [Line Items]        
Fair Value     $ 109.3 108.0
Trade Names [Member] | Minimum [Member]        
Business Acquisition [Line Items]        
Useful Lives     3 years  
Trade Names [Member] | Maximum [Member]        
Business Acquisition [Line Items]        
Useful Lives     10 years  
Technology [Member]        
Business Acquisition [Line Items]        
Fair Value     $ 6.1 $ 5.0
Useful Lives     7 years  
Cincinnati Bell Inc. [Member]        
Business Acquisition [Line Items]        
Fair Value   969.6    
Cincinnati Bell Inc. [Member] | Customer Relationships [Member]        
Business Acquisition [Line Items]        
Fair Value   $ 850.0    
Useful Lives   15 years    
Cincinnati Bell Inc. [Member] | Trade Names [Member]        
Business Acquisition [Line Items]        
Fair Value   $ 108.0    
Cincinnati Bell Inc. [Member] | Trade Names [Member] | Minimum [Member]        
Business Acquisition [Line Items]        
Useful Lives   3 years    
Cincinnati Bell Inc. [Member] | Trade Names [Member] | Maximum [Member]        
Business Acquisition [Line Items]        
Useful Lives   10 years    
Cincinnati Bell Inc. [Member] | Technology [Member]        
Business Acquisition [Line Items]        
Fair Value   $ 5.0    
Useful Lives   7 years    
Cincinnati Bell Inc. [Member] | FCC Licenses and Spectrum Usage Rights [Member]        
Business Acquisition [Line Items]        
Fair Value   $ 6.6    
Agile IWG Holdings, LLC [Member]        
Business Acquisition [Line Items]        
Fair Value $ 19.4      
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