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Post Retirement Benefit Plans - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2017 | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Special Events |  |  |  |
Settlement | $ 1.5 | $ 25.9 |  |
Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 13.3 | $ 12.4 | $ 15.5
Interest cost |  | 18.2 | 22.0 | 27.6
Expected return on plan assets |  | (27.7) | (32.1) | (32.8)
Amortization of prior service cost |  | (0.1) | (0.2) | 0.1
Recognized net actuarial loss |  | 10.9 | 11.4 | 14.2
Special Events |  |  |  |
Curtailment |  |  |  | 0.5
Settlement |  | 27.8 | 0.1 | 0.1
Special/contractual termination benefit |  |  |  | 0.1
Net periodic pension (benefit) cost |  | 42.4 | 13.6 | 25.3
Pension Plan | United States |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 11.8 | 10.2 | 11.3
Interest cost |  | 12.9 | 13.7 | 17.3
Expected return on plan assets |  | (15.6) | (19.0) | (18.7)
Amortization of prior service cost |  | 0.0 | (0.1) | 0.1
Recognized net actuarial loss |  | 8.1 | 9.3 | 10.0
Special Events |  |  |  |
Curtailment |  |  |  | 0.3
Settlement |  | 25.9 | 0.0 | 0.0
Special/contractual termination benefit |  |  |  | 0.0
Net periodic pension (benefit) cost |  | 43.1 | 14.1 | 20.3
Pension Plan | Foreign Plan | Germany |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.5 | 0.5 | 0.5
Interest cost |  | 0.5 | 0.8 | 0.9
Expected return on plan assets |  | 0.0 | 0.0 | 0.0
Amortization of prior service cost |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  | 1.3 | 1.0 | 0.9
Special Events |  |  |  |
Curtailment |  |  |  | 0.0
Settlement |  | 0.7 | 0.0 | 0.0
Special/contractual termination benefit |  |  |  | 0.0
Net periodic pension (benefit) cost |  | 3.0 | 2.3 | 2.3
Pension Plan | Foreign Plan | United Kingdom |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.5 | 0.8 | 1.8
Interest cost |  | 3.8 | 5.7 | 6.5
Expected return on plan assets |  | (10.2) | (10.7) | (11.4)
Amortization of prior service cost |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  | 1.5 | 0.8 | 2.2
Special Events |  |  |  |
Curtailment |  |  |  | 0.0
Settlement |  | 1.2 | 0.0 | 0.0
Special/contractual termination benefit |  |  |  | 0.0
Net periodic pension (benefit) cost |  | (3.2) | (3.4) | (0.9)
Pension Plan | Foreign Plan | Netherlands |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.4 | 0.7 | 1.4
Interest cost |  | 0.7 | 1.4 | 2.4
Expected return on plan assets |  | (1.2) | (1.7) | (1.9)
Amortization of prior service cost |  | (0.1) | (0.1) | 0.0
Recognized net actuarial loss |  | 0.0 | 0.3 | 0.8
Special Events |  |  |  |
Curtailment |  |  |  | 0.0
Settlement |  | 0.0 | 0.0 | 0.0
Special/contractual termination benefit |  |  |  | 0.0
Net periodic pension (benefit) cost |  | (0.2) | 0.6 | 2.7
Pension Plan | Foreign Plan | Other International |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.1 | 0.2 | 0.5
Interest cost |  | 0.3 | 0.4 | 0.5
Expected return on plan assets |  | (0.7) | (0.7) | (0.8)
Amortization of prior service cost |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  | 0.0 | 0.0 | 0.3
Special Events |  |  |  |
Curtailment |  |  |  | 0.2
Settlement |  | 0.0 | 0.1 | 0.1
Special/contractual termination benefit |  |  |  | 0.1
Net periodic pension (benefit) cost |  | $ (0.3) | $ 0.0 | $ 0.9

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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