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Financial Instruments Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Interest rate agreements fair value | $ (18,669) | $ (39,337) | $ 76,602 | $ (88,345)
Forward commodity contracts fair value | 0 | 10,573 | 9,847 | (8,612)
Interest rate agreements | 113 | 87 | 286 | 260
Forward commodity contracts | 0 | 7,532 | (4,865) | 29,290
Total other comprehensive income (loss) from hedging, net of tax | (18,556) | $ (21,145) | 81,870 | $ (67,407)
Expected Earnings [Line Items] |  |  |  |
Expected Recognition in Earnings of Deferred Gain (Losses), Interest Rate Agreements | (41,510) |  | (41,510) |
Next Twelve Months [Member] |  |  |  |
Expected Earnings [Line Items] |  |  |  |
Expected Recognition in Earnings of Deferred Gain (Losses), Interest Rate Agreements | (1,509) |  | (1,509) |
Thereafter [Member] |  |  |  |
Expected Earnings [Line Items] |  |  |  |
Expected Recognition in Earnings of Deferred Gain (Losses), Interest Rate Agreements | $ (40,001) |  | $ (40,001) |

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- Definition Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 + Details
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