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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Goodwill and Intangibles (Details) | 6 Months Ended
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Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items] |
Document Period End Date | Mar. 31, 2018
Customer Relationships [Member] | Weighted average |
Finite-Lived Intangible Assets [Line Items] |
Amortization period, intangible asset | 17 years 11 months
Customer Relationships [Member] | Maximum |
Finite-Lived Intangible Assets [Line Items] |
Amortization period, intangible asset | 20 years
Technology Assets [Member] | Weighted average |
Finite-Lived Intangible Assets [Line Items] |
Amortization period, intangible asset | 11 years 5 months
Technology Assets [Member] | Maximum |
Finite-Lived Intangible Assets [Line Items] |
Amortization period, intangible asset | 18 years
Trade Names [Member] | Weighted average |
Finite-Lived Intangible Assets [Line Items] |
Amortization period, intangible asset | 6 years 2 months

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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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