Goodwill and purchased intangible assets Additional information (Details)
$ in Thousands |
6 Months Ended |
|
Apr. 30, 2016
USD ($)
|
|---|
| Finite-Lived Intangible Assets [Line Items] |
|
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |
$ 52,520
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Two |
74,934
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Three |
66,111
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Four |
61,217
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Five |
42,260
|
| Finite-Lived Intangible Assets, Amortization Expense, after Year Five |
70,975
|
| Net Carrying Amount |
368,017
|
| gross value [Member] |
|
| Finite-Lived Intangible Assets [Line Items] |
|
| Currency translation adjustment |
12,200
|
| accumulated amortization [Member] |
|
| Finite-Lived Intangible Assets [Line Items] |
|
| Currency translation adjustment |
6,000
|
| Cost of Sales [Member] |
|
| Finite-Lived Intangible Assets [Line Items] |
|
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |
7,667
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Two |
8,379
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Three |
6,205
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Four |
4,911
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Five |
3,248
|
| Finite-Lived Intangible Assets, Amortization Expense, after Year Five |
3,464
|
| Net Carrying Amount |
33,874
|
| Operating Expense [Member] |
|
| Finite-Lived Intangible Assets [Line Items] |
|
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |
44,853
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Two |
66,555
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Three |
59,906
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Four |
56,306
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Five |
39,012
|
| Finite-Lived Intangible Assets, Amortization Expense, after Year Five |
67,511
|
| Net Carrying Amount |
$ 334,143
|