Business combinations and disposals - DeltaWare Systems, Inc. (Details) |
3 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2017
USD ($)
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Jun. 30, 2017
USD ($)
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Mar. 31, 2017
USD ($)
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Dec. 31, 2016
USD ($)
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Sep. 30, 2016
USD ($)
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Jun. 30, 2016
USD ($)
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Mar. 31, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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Sep. 30, 2017
USD ($)
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Sep. 30, 2017
CAD
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Sep. 30, 2016
CAD
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Dec. 31, 2010
CAD
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| Business Acquisition [Line Items] | ||||||||||||||
| Revenue | $ | $ 620,903,000 | $ 600,447,000 | $ 622,047,000 | $ 607,564,000 | $ 623,091,000 | $ 617,094,000 | $ 606,453,000 | $ 556,722,000 | $ 2,450,961,000 | $ 2,403,360,000 | $ 2,099,821,000 | |||
| DeltaWare | Sales targets | ||||||||||||||
| Business Acquisition [Line Items] | ||||||||||||||
| Contingent consideration arrangements, range of outcomes, value, high | CAD | CAD 4,000,000 | |||||||||||||
| Revenue | $ | $ 0 | |||||||||||||
| Liability for potential obligation | CAD | CAD 0 | CAD 0 | ||||||||||||
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- Definition Represents the maximum amount of contingent consideration payable, based upon sales of acquiree products in particular geographic markets. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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