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Energy Services Accounts Receivable Securitization Facility (Tables)
6 Months Ended
Mar. 31, 2018
Transfers and Servicing [Abstract]  
Schedule of Transfer of Trade Receivables
Information regarding the trade receivables transferred to ESFC and the amounts sold to the bank for the six months ended March 31, 2018 and 2017, as well as the balance of ESFC trade receivables at March 31, 2018, September 30, 2017 and March 31, 2017, is as follows:
 
 
Six Months Ended March 31,
 
 
2018
 
2017
Trade receivables transferred to ESFC during the period
 
$
806.9

 
$
633.7

ESFC trade receivables sold to the bank during the period
 
$
128.0

 
$
151.0


 
 
March 31, 2018
 
September 30, 2017
 
March 31, 2017
ESFC trade receivables — end of period (a)
 
$
99.6

 
$
44.8

 
$
85.3

(a)
At March 31, 2018 and September 30, 2017, the amounts of ESFC trade receivables sold to the bank were $10.0 and $39.0, respectively. At March 31, 2017, there were no ESFC trade receivables sold to the bank. Amounts sold to the bank are reflected as “Short-term borrowings” on the Condensed Consolidated Balance Sheets.