Income Taxes Income Tax (Taxing Jurisdictions) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Tax Examination [Line Items]
Deferred Tax Assets, Net of Valuation Allowance, Current		$ 0.0
Deferred Tax Liabilities, Net, Current		$ 0.0
Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2018
Earliest Tax Year [Member] | ILLINOIS
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2004
Earliest Tax Year [Member] | CANADA [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014
Earliest Tax Year [Member] | INDIA
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2004
Earliest Tax Year [Member] | GERMANY
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2010
Latest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2018
Latest Tax Year [Member] | ILLINOIS
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016
Latest Tax Year [Member] | CANADA [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014
Latest Tax Year [Member] | INDIA
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2015
Latest Tax Year [Member] | GERMANY
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014