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Financial Instruments (Table)
 3 Months Ended
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value
The following tables present the fair value and balance sheet classification of our financial instruments as of December 31, 2018 and September 30, 2018. The gross amounts of recognized assets and liabilities are netted within our unaudited condensed consolidated balance sheets to the extent that we have netting arrangements with our counterparties. However, for December 31, 2018 and September 30, 2018, no gross amounts and no cash collateral were netted within our consolidated balance sheet.
 
 
 
 
 
Balance Sheet Location
 
Assets
 
Liabilities
 
 
 
 (In thousands)
December 31, 2018
 
 
 
 
 
Designated As Hedges:
 
 
 
 
 
Interest rate swap agreements
Other current assets /
Other current liabilities
 
$
—

 
$
(85,930
)
Total
 
 
—

 
(85,930
)
Not Designated As Hedges:
 
 
 
 
 
Commodity contracts
Other current assets /
Other current liabilities
 
3,241

 
(1,265
)
Commodity contracts
Deferred charges and other assets /
Deferred credits and other liabilities
 
285

 
—

Total
 
 
3,526

 
(1,265
)
Gross / Net Financial Instruments
 
 
$
3,526

 
$
(87,195
)

 
 
 
 
 
 
Balance Sheet Location
 
Assets
 
Liabilities
 
 
 
 (In thousands)
September 30, 2018
 
 
 
 
 
Designated As Hedges:
 
 
 
 
 
Interest rate swap agreements
Other current assets /
Other current liabilities
 
$
—

 
$
(56,499
)
Total
 
 
—

 
(56,499
)
Not Designated As Hedges:
 
 
 
 
 
Commodity contracts
Other current assets /
Other current liabilities
 
1,369

 
(235
)
Commodity contracts
Deferred charges and other assets /
Deferred credits and other liabilities
 
250

 
(103
)
Total
 
 
1,619

 
(338
)
Gross / Net Financial Instruments
 
 
$
1,619

 
$
(56,837
)
 
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)
The following table summarizes the gains and losses arising from hedging transactions that were recognized as a component of other comprehensive income (loss), net of taxes, for the three months ended December 31, 2018 and 2017. The amounts included in the table below exclude gains and losses arising from ineffectiveness because those amounts are immediately recognized in the statement of comprehensive income as incurred.
 
Three Months Ended 
 December 31
 
2018
 
2017
 
(In thousands)
Increase (decrease) in fair value:
 
 
 
Interest rate agreements
$
(22,716
)
 
$
(1,332
)
Recognition of losses in earnings due to settlements:
 
 
 
Interest rate agreements
458

 
377

Total other comprehensive income (loss) from hedging, net of tax
$
(22,258
)
 
$
(955
)
Schedule Of Expected Deferred Gains (Losses) Recognition
The following amounts, net of deferred taxes, represent the expected recognition in earnings, as of December 31, 2018, of the deferred losses recorded in AOCI associated with our financial instruments, based upon the fair values of these financial instruments at the date of settlement. However, the table below does not include the expected recognition in earnings of our outstanding interest rate agreements as those instruments have not yet settled.
 
Interest Rate
Agreements
 
(In thousands)
Next twelve months
$
(1,878
)
Thereafter
(45,827
)
Total
$
(47,705
)