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Income Taxes - Tax Jurisdictions and Years Currently under Audit Exam (Details) | 9 Months Ended
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Jun. 30, 2019
UNITED STATES |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2015 2016
BELGIUM |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2015 2016 2017
CHINA |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2008 2009 2010 2011 2012 2013 2014 2015 2016
France |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2010 2011 2012 2015 2016
Germany |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
JAPAN |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2015 2016 2017 2018
United Kingdom |
Income Tax Examination [Line Items] |
Tax years currently under audit exam | 2012 2013 2014 2015

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- Definition Tax year being audited in the income tax examination, in CCYY format. + References No definition available. + Details
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