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Accrued Liabilities (Schedule Of Accrued Liabilities) (Detail) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure Accrued Liabilities Summary Of Warranty Liabilities [Abstract]      
Employee related expenses $ 98.5 $ 120.6  
Standard and Extended Product Warranty Accrual 10.0 11.0 $ 18.2
Current lease liabilities 22.8 24.0  
Contract with Customer, Liability, Current 77.9 88.4  
Other 130.4 134.2  
Total $ 339.6 $ 378.2