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Consolidated Statements of Financial Position (Parenthetical) | Dec. 31, 2017 € / shares | Dec. 31, 2017 $ / shares | Sep. 30, 2017 € / shares | Sep. 30, 2017 $ / shares
--- | --- | --- | --- | ---
Ordinary shares, par value |  | $ 0.01 |  | $ 0.01
Preferred shares, par value |  | $ 0.01 |  | $ 0.01
Common Class A [Member] |  |  |  |
Ordinary shares, par value | € / shares | € 1.00 |  | € 1.00 |

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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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