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DEBT Credit Facility (Details) | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Jul. 31, 2016 USD ($) | Jul. 31, 2016 GBP (£) | Oct. 31, 2015 USD ($) | Jul. 21, 2015 USD ($)
Unsecured Credit facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Borrowing Capacity, Description | On September 15, 2014, we entered into a five year credit agreement, which provides for a $300 million unsecured credit facility that will expire on November 1, 2019. On July 21, 2015, the total amount available under the credit facility was increased to $450 million. The company may use amounts borrowed under the facility for general corporate purposes. |  |  |
Line of Credit Facility, Initiation Date | Sep. 15, 2014 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 300,000,000 |  |  |
Line of Credit Facility, Expiration Date | Nov. 01, 2019 |  |  |
Line of Credit Facility, Accession Agreement Date | Jul. 21, 2015 |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 450,000,000 |  |  |
Line of Credit Facility, Revised Maximum Borrowing Capacity |  |  |  | $ 450,000,000
Line of Credit Facility, Outstanding | $ 0 |  |  |
Bank Overdrafts [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Borrowing Capacity, Description | As a result of the Anite acquisition, we have an overdraft facility of £25 million that expired on July 31, 2016, but by mutual agreement this facility continues to be available while a replacement short-term facility is negotiated. As of July 31, 2016, we had no borrowings outstanding under the facility. |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | £ |  | £ 25,000,000 |  |
Line of Credit Facility, Expiration Date | Jul. 31, 2016 |  |  |
Line of Credit Facility, Outstanding | $ 0 |  |  |
Letter of Credit [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Outstanding | $ 16,000,000 |  | $ 19,000,000 |

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- Definition Line of Credit Facility, Revised Maximum Borrowing Capacity + References No definition available. + Details
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- Definition Description of the credit facility's borrowing capacity including discussion of how the borrowing capacity is determined (for example, borrowing capacity based on the amount of current assets). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
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- Definition Date the credit facility first became available, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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