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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
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI | $ 7.8 |
Gain (Loss) Reclassified from AOCI into Income | (1.0) |
Derivatives Not Designated as Hedging Instruments |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in Income | (41.8) | $ (154.0)
Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI |  | (1.9)
Gain (Loss) Reclassified from AOCI into Income |  | (1.0)
Forward foreign currency exchange contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI | 0.0 |
Foreign currency contracts | (3.5) |
Forward foreign currency exchange contracts | Cost of sales |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income | 0.0 |
Forward foreign currency exchange contracts | Derivatives Not Designated as Hedging Instruments | Other non-operating (expense) income, net |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in Income | (11.3) | 8.9
Forward foreign currency exchange contracts | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI |  | 1.0
Forward foreign currency exchange contracts | Cash Flow Hedges | Cost of sales |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income |  | 0.8
Forward foreign currency exchange contracts | Net Investment Hedges |  |
Derivative Instruments, Gain (Loss) |  |
Foreign currency contracts |  | 0.9
Cross Currency Interest Rate Contract |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI | 0.0 |
Cross Currency Interest Rate Contract | Interest expense/other operating income, net |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income | 0.0 |
Cross Currency Interest Rate Contract | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI |  | (0.1)
Cross Currency Interest Rate Contract | Cash Flow Hedges | Interest expense/other operating income, net |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income |  | (0.3)
Interest rate contracts |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI | 7.8 |
Interest rate contracts | Interest expense |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income | (1.0) |
Interest rate contracts | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in AOCI |  | (2.8)
Interest rate contracts | Cash Flow Hedges | Interest expense |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Reclassified from AOCI into Income |  | (1.5)
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Cost of sales |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in Income | (33.1) | (159.7)
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Revenues |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in Income | 2.5 | (2.8)
Commodity contracts | Derivatives Not Designated as Hedging Instruments | Operating and administrative expenses |  |
Derivative Instruments, Gain (Loss) |  |
Gain (Loss) Recognized in Income | $ 0.1 | $ (0.4)

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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