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Derivative Financial Instruments (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Gains and losses recognized in cost of products sold on derivatives not designated as qualified hedging instruments
Total gains (losses) recognized in cost of products sold	$ (7.0)	$ (25.6)	$ (5.6)	$ (54.2)
Commodity contracts
Gains and losses recognized in cost of products sold on derivatives not designated as qualified hedging instruments
Total gains (losses) recognized in cost of products sold	(7.3)	(25.8)	(4.8)	(55.9)
Foreign currency exchange contracts
Gains and losses recognized in cost of products sold on derivatives not designated as qualified hedging instruments
Total gains (losses) recognized in cost of products sold	$ 0.3	$ 0.2	$ (0.8)	$ 1.7

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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

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- References

No definition available.

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