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Redeemable Securities (Details) - USD ($) $ in Millions | Mar. 11, 2016 | Mar. 31, 2016
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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 | $ 20.5
Equity Method Investment, Ownership Percentage | 21.00% |
Business Combination, Consideration Transfered, Interest Rate | 2.00% |

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