Business combinations pro forma financial information (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | |
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Dec. 31, 2018 |
Dec. 31, 2017 |
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| Business Combinations [Abstract] | ||
| Pro forma net sales | $ 1,411.3 | $ 1,379.4 |
| Pro forma net earnings available to common shareholders | $ 38.9 | $ 263.1 |
| Pro forma basic earnings (loss) per share (in US$ per share) | $ 0.58 | $ 3.99 |
| Pro forma diluted earnings (loss) per share (in US$ per share) | $ 0.54 | $ 3.45 |
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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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