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Derivative Instruments and Hedging Activities - Effects of Derivative Instruments on the Condensed Consolidated Statements of Income and Changes in AOCI (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | $ 21.7 | $ (5.8) | $ 131.5 | $ (50.5)
Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in AOCI | (0.8) | (48.2) | 17.5 | (37.2)
Gain (Loss) Reclassified from AOCI into Income | 7.9 | 7.0 | 14.5 | 15.5
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Cost of sales |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | 22.0 | (6.0) | 130.5 | (52.2)
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Revenues |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | 0.8 | 0.2 | 0.9 | 1.8
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Operating and administrative expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | 0.1 | 0.0 | 0.0 | (0.1)
Foreign currency contracts | Derivatives Not Designated as Hedging Instruments | (Losses) gains on foreign currency contracts, net |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in Income | (1.2) | 0.0 | 0.1 | 0.0
Foreign currency contracts | Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in AOCI | (1.7) | (10.7) | 15.5 | (5.3)
Foreign currency contracts | Cash Flow Hedges | Cost of sales |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Reclassified from AOCI into Income | 8.9 | 8.1 | 16.8 | 17.2
Cross-currency contracts | Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in AOCI | 0.3 | (0.3) | 0.2 | (0.3)
Cross-currency contracts | Cash Flow Hedges | Interest expense/other operating income, net |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Reclassified from AOCI into Income | 0.0 | 0.2 | (0.3) | 0.2
Interest rate contracts | Cash Flow Hedges |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Recognized in AOCI | 0.6 | (37.2) | 1.8 | (31.6)
Interest rate contracts | Cash Flow Hedges | Interest expense |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gain (Loss) Reclassified from AOCI into Income | $ (1.0) | $ (1.3) | $ (2.0) | $ (1.9)

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959 + Details
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