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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Goodwill And Intangible Assets [Line Items]            
Indefinite-lived intangible assets and goodwill Impairment charges       $ 139.1    
Amortization expense $ 17.3   $ 17.6 34.8 $ 35.4  
Estimated amortization expense, remainder of 2020 35.9     35.9    
Estimated amortization expense, year 2021 70.7     70.7    
Estimated amortization expense, year 2022 70.7     70.7    
Estimated amortization expense, year 2023 70.7     70.7    
Estimated amortization expense, year 2024 70.7     70.7    
Estimated amortization expense, thereafter $ 865.9     $ 865.9    
Jacobs Vehicle Systems [Member]            
Goodwill And Intangible Assets [Line Items]            
Reporting unit, percentage of fair value in excess of carrying amount           10.00%
Non-cash impairment charges   $ 8.4        
Indefinite-lived intangible assets and goodwill Impairment charges   $ 139.1        
All Other Reporting Units [Member]            
Goodwill And Intangible Assets [Line Items]            
Reporting unit, percentage of fair value in excess of carrying amount           10.00%