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Other Deductions, Net (Schedule Of Other Deductions, Net) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Other deductions, net [Line Items] |  |  |  |
Amortization of intangibles | $ 47 | $ 41 | $ 154 | $ 84
Restructuring costs | 14 | 21 | 38 | 45
Other | 27 | 25 | 83 | 74
Total | $ 88 | $ 87 | 275 | $ 203
Increase (decrease) in bad debt expense |  |  | (11) |
Acquisition/divestiture (costs) benefit |  |  | $ (16) |

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