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Accrued Liabilities (Summary Of Warranty Liabilities) (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Payables and Accruals [Abstract]        
Balance at beginning of period $ 10.5 $ 8.8 $ 8.1 $ 9.8
Expense 1.0 2.2 7.0 7.3
Changes due to acquisitions 0.0 0.3 0.0 0.3
Payments / deductions (2.1) (1.7) (5.7) (7.8)
Currency translation (0.1) 0.1 (0.1) 0.1
Balance at end of period $ 9.3 $ 9.7 $ 9.3 $ 9.7