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Income Taxes (Schedule Of Reconciliations Of The U.S. Federal Statutory Tax Rate) (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2017 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Federal statutory rate | 35.00% | 21.00% | 21.00% | 24.50% | 35.00%
State and local taxes, net of federal tax benefit |  |  | 1.00% | 1.20% | 1.20%
Non-U.S. rate differential |  |  | 1.80% | 0.80% | (3.60%)
Non-U.S. tax holidays |  |  | (1.10%) | (0.80%) | (1.00%)
U.S. manufacturing deduction |  |  | 0.00% | (1.10%) | (1.70%)
Foreign derived intangible income |  |  | (1.10%) | 0.00% | 0.00%
Gain on divestiture |  |  | 0.00% | 1.00% | 0.00%
Non-U.S. subsidiary restructuring |  |  | (2.60%) | (2.00%) | (1.80%)
Transition impact of Tax Act |  |  | 0.00% | (7.10%) | 0.00%
Other |  |  | (0.40%) | 0.10% | 0.20%
Effective income tax rate |  |  | 18.60% | 16.60% | 28.30%

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