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Goodwill And Intangible Assets (Summary Of Intangible Assets) (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period of Finite Lived Assets (in years) 18 years    
Gross Asset $ 921.5 $ 920.0  
Accumulated Amortization 515.0 503.4  
Intangible assets, net $ 406.5 416.6 $ 467.1
Intellectual property rights      
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period of Finite Lived Assets (in years) 15 years 1 month 6 days    
Gross Asset $ 132.4 132.1  
Accumulated Amortization 59.5 59.1  
Intangible assets, net $ 72.9 73.0  
Customer relationships and backlog      
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period of Finite Lived Assets (in years) 18 years 4 months 24 days    
Gross Asset $ 636.2 635.5  
Accumulated Amortization 338.3 329.8  
Intangible assets, net $ 297.9 305.7  
Drawings      
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period of Finite Lived Assets (in years) 40 years    
Gross Asset $ 11.1 11.1  
Accumulated Amortization 10.7 10.7  
Intangible assets, net $ 0.4 0.4  
Other      
Acquired Finite-Lived Intangible Assets [Line Items]      
Weighted Average Amortization Period of Finite Lived Assets (in years) 11 years 8 months 12 days    
Gross Asset $ 141.8 141.3  
Accumulated Amortization 106.5 103.8  
Intangible assets, net $ 35.3 $ 37.5