Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

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Acquisitions of Businesses - Schedule of Identifiable Intangible Assets Recorded in Conjunction with Acquisitions (Details) - USD ($) $ in Millions					12 Months Ended
	Jan. 31, 2016	Dec. 01, 2015	Oct. 28, 2015	Feb. 13, 2015	Jan. 31, 2016
Business Acquisition [Line Items]
Fair Value					$ 2,577.7
Weighted average useful life (years)					14 years 2 months 12 days
OMG Malaysia
Business Acquisition [Line Items]
Fair Value	$ 43.9
Weighted average useful life (years)	14 years 3 months 18 days
Alent
Business Acquisition [Line Items]
Fair Value		$ 682.9
Weighted average useful life (years)		13 years 2 months 12 days
Indefinite-lived trade names		$ 81.4
OMG
Business Acquisition [Line Items]
Fair Value			$ 77.9
Weighted average useful life (years)			19 years
Arysta
Business Acquisition [Line Items]
Fair Value				$ 1,773.0
Weighted average useful life (years)				14 years 3 months 18 days
Customer lists
Business Acquisition [Line Items]
Fair Value					$ 751.4
Weighted average useful life (years)					19 years 1 month 6 days
Customer lists \| OMG Malaysia
Business Acquisition [Line Items]
Fair Value	$ 41.0
Weighted average useful life (years)	15 years
Customer lists \| Alent
Business Acquisition [Line Items]
Fair Value		$ 391.4
Weighted average useful life (years)		14 years 8 months 12 days
Customer lists \| OMG
Business Acquisition [Line Items]
Fair Value			$ 49.0
Weighted average useful life (years)			24 years 3 months 18 days
Customer lists \| Arysta
Business Acquisition [Line Items]
Fair Value				$ 270.0
Weighted average useful life (years)				25 years
Developed technology
Business Acquisition [Line Items]
Fair Value					$ 1,484.2
Weighted average useful life (years)					11 years 8 months 12 days
Developed technology \| OMG Malaysia
Business Acquisition [Line Items]
Fair Value	$ 2.9
Weighted average useful life (years)	5 years
Developed technology \| Alent
Business Acquisition [Line Items]
Fair Value		$ 203.3
Weighted average useful life (years)		10 years
Developed technology \| OMG
Business Acquisition [Line Items]
Fair Value			$ 28.0
Weighted average useful life (years)			10 years
Developed technology \| Arysta
Business Acquisition [Line Items]
Fair Value				$ 1,250.0
Weighted average useful life (years)				12 years
Tradenames
Business Acquisition [Line Items]
Fair Value					$ 339.7
Weighted average useful life (years)					18 years 3 months 18 days
Tradenames \| OMG Malaysia
Business Acquisition [Line Items]
Fair Value	$ 0.0
Tradenames \| Alent
Business Acquisition [Line Items]
Fair Value		$ 85.8
Weighted average useful life (years)		20 years
Tradenames \| OMG
Business Acquisition [Line Items]
Fair Value			$ 0.9
Weighted average useful life (years)			10 years
Tradenames \| Arysta
Business Acquisition [Line Items]
Fair Value				$ 253.0
In Process Research and Development
Business Acquisition [Line Items]
In process - research and development					$ 2.4
In Process Research and Development \| OMG Malaysia
Business Acquisition [Line Items]
In process - research and development	$ 0.0
In Process Research and Development \| Alent
Business Acquisition [Line Items]
In process - research and development		$ 2.4
In Process Research and Development \| OMG
Business Acquisition [Line Items]
In process - research and development			$ 0.0
In Process Research and Development \| Arysta
Business Acquisition [Line Items]
In process - research and development				$ 0.0