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Fair Value Measurements (Summary Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Fair Value Disclosures [Abstract]    
Derivative, notional amount $ 10.8 $ 4.1
Derivative asset 0.0 0.1
Derivative liability $ 0.2 $ 0.0