Income Taxes - Unrecognized tax benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2013 |
|
| Activity within the reserve for unrecognized tax benefits | |||
| Balance at the beginning of the period | $ 8.4 | $ 6.4 | $ 2.9 |
| Additions for tax positions related to the current year | 0.6 | 2.5 | 0.2 |
| Additions for tax positions of prior years | 0.8 | 0.0 | 1.5 |
| Reductions for tax positions of prior years | (2.0) | (0.3) | (1.2) |
| Settlements | 0.0 | (0.2) | (1.3) |
| Balance attributable to acquisition of Coperion | 0.0 | 0.0 | 4.3 |
| Balance at the end of the period | 7.8 | 8.4 | $ 6.4 |
| Gross unrecognized tax benefits, if recognized would impact the effective tax rate | 6.8 | 7.6 | |
| Additional amounts recognized (released) for interest and penalties | 0.2 | 0.4 | |
| Other amounts accrued for interest and penalties | 0.9 | $ 0.8 | |
| Amount by which the unrecognized tax benefits could increase or decrease over the next 12 months | $ 2.6 | ||
| X | ||||||||||
- Definition Represents unrecognized tax benefit additions for acquired position related to Rotex. No definition available.
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|