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Accrued Liabilities (Summary Of Warranty Liabilities) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Payables and Accruals [Abstract]        
Balance at beginning of period $ 10.2 $ 9.6 $ 8.1 $ 9.8
Expense 2.8 2.6 6.0 5.1
Changes due to acquisitions 0.0 0.3 0.0 0.3
Payments / deductions (2.4) (3.7) (3.4) (6.4)
Currency translation (0.1) 0.0 (0.2) 0.0
Balance at end of period $ 10.5 $ 8.8 $ 10.5 $ 8.8