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Debt - Schedule of Receivables Facility (Details) - Energy Services - Receivables Facility - Energy Services Receivables Facility - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Short-term Debt |  |  |
Trade receivables transferred to ESFC during the year | $ 1,279.5 | $ 1,017.3 | $ 756.4
ESFC trade receivables sold to the bank during the year | 193.0 | 243.0 | 204.0
ESFC trade receivables - end of year | 65.0 | 44.8 | $ 35.7
Outstanding balance of trade receivables sold | $ 2.0 | $ 39.0 |

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- Definition Outstanding balance of ESFC trade receivables. + References No definition available. + Details
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- Definition Sale of trade receivables to consolidated special purpose subsidiary. + References No definition available. + Details
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- Definition Trade receivables sold to commercial paper conduit. + References No definition available. + Details
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- Definition Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Details
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- Details
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- Details
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