- OFFSETTING OF ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Energy Services
Derivative assets:
Amounts Presented on the Balance Sheets	$ 32,080	$ 37,396
Offsetting Derivative Instruments	(22,553)	(22,719)
Financial Collateral Received/Pledged	(200)	(200)
Net Amounts	9,327	14,477
Derivative liabilities:
Amounts Presented in Balance Sheets	75,629	69,442
Offsetting Derivative Instruments	(22,553)	(22,719)
Financial Collateral Received/Pledged	(15,516)	(20,949)
Net Amounts	37,560	25,774
Energy Services | Physical commodity contracts
Derivative assets:
Amounts Presented on the Balance Sheets	8,557	11,597
Offsetting Derivative Instruments	(2,906)	(3,944)
Financial Collateral Received/Pledged	(200)	(200)
Net Amounts	5,451	7,453
Derivative liabilities:
Amounts Presented in Balance Sheets	40,181	29,474
Offsetting Derivative Instruments	(2,906)	(3,944)
Financial Collateral Received/Pledged	0	0
Net Amounts	37,275	25,530
Energy Services | Financial commodity contracts
Derivative assets:
Amounts Presented on the Balance Sheets	23,522	25,799
Offsetting Derivative Instruments	(19,646)	(18,775)
Financial Collateral Received/Pledged	0	0
Net Amounts	3,876	7,024
Derivative liabilities:
Amounts Presented in Balance Sheets	35,162	39,724
Offsetting Derivative Instruments	(19,646)	(18,775)
Financial Collateral Received/Pledged	(15,516)	(20,949)
Net Amounts	0	0
Energy Services | Foreign currency contracts
Derivative assets:
Amounts Presented on the Balance Sheets	1
Offsetting Derivative Instruments	(1)
Financial Collateral Received/Pledged	0
Net Amounts	0
Derivative liabilities:
Amounts Presented in Balance Sheets	286	244
Offsetting Derivative Instruments	(1)	0
Financial Collateral Received/Pledged	0	0
Net Amounts	285	244
Natural Gas Distribution
Derivative assets:
Amounts Presented on the Balance Sheets	449	179
Offsetting Derivative Instruments	(391)	(3)
Financial Collateral Received/Pledged	0	(94)
Net Amounts	58	82
Derivative liabilities:
Amounts Presented in Balance Sheets	815	192
Offsetting Derivative Instruments	(391)	(3)
Financial Collateral Received/Pledged	(188)	0
Net Amounts	236	189
Natural Gas Distribution | Physical commodity contracts
Derivative assets:
Amounts Presented on the Balance Sheets	67	85
Offsetting Derivative Instruments	(9)	(3)
Financial Collateral Received/Pledged	0	0
Net Amounts	58	82
Derivative liabilities:
Amounts Presented in Balance Sheets	245	192
Offsetting Derivative Instruments	(9)	(3)
Financial Collateral Received/Pledged	0	0
Net Amounts	236	189
Natural Gas Distribution | Financial commodity contracts
Derivative assets:
Amounts Presented on the Balance Sheets	382	94
Offsetting Derivative Instruments	(382)	0
Financial Collateral Received/Pledged	0	(94)
Net Amounts	0	0
Derivative liabilities:
Amounts Presented in Balance Sheets	570
Offsetting Derivative Instruments	(382)
Financial Collateral Received/Pledged	(188)
Net Amounts	$ 0
Home Services and Other
Derivative assets:
Amounts Presented on the Balance Sheets		381
Offsetting Derivative Instruments		0
Financial Collateral Received/Pledged		0
Net Amounts		381
Home Services and Other | Interest rate contract
Derivative assets:
Amounts Presented on the Balance Sheets		381
Offsetting Derivative Instruments		0
Financial Collateral Received/Pledged		0
Net Amounts		$ 381