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Other Deductions, Net
 3 Months Ended
Dec. 31, 2020
Other Income and Expenses [Abstract]  
Other Deductions, Net OTHER DEDUCTIONS, NET
Other deductions, net are summarized below:
 Three Months Ended
December 31,
 2019 2020 
Amortization of intangibles (intellectual property and customer relationships)$59 78 
Restructuring costs97 66 
Special advisory fees13 — 
Other9 (22)
Total$178 122 
In the first quarter of fiscal 2021, the increase in intangibles amortization was due to the OSI acquisition, including backlog amortization of $11. Other included an investment gain of $21 and a gain from acquiring the remaining interest of an equity investment of $17. The impact of pensions was favorable by $11, offset by fees related to the OSI acquisition of $6 and an unfavorable impact from foreign currency transactions of $7.