Redeemable Securities (Details) - USD ($) $ in Millions	May 18, 2017	Mar. 11, 2016
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage		19.90%
Hitachi Chemical Co., LTD [Member]
Business Acquisition [Line Items]
Recorded Unconditional Purchase Obligation		$ 19.4
Equity Method Investment, Ownership Percentage		21.00%
Business Combination, Consideration Transfered, Interest Rate		2.00%
Redeemable Securities Agreement, Required Purchase Based on Equity Event, Maximum		$ 20.5
Redeemable Securities, Classified to Additional Paid In Capital	$ 14.7
Redeemable Securities, Classified to Non-Controlling Interests	$ 4.7

Business Combination, Consideration Transfered, Interest Rate

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- Definition

Redeemable Securities Agreement, Required Purchase Based on Equity Event, Maximum

+ References

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- Definition

Redeemable Securities, Classified to Additional Paid In Capital

+ References

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- Definition

Redeemable Securities, Classified to Non-Controlling Interests

+ References

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- Definition

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

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25383-109308

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