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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, 2018 | Oct. 31, 2017 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Special Events |  |  |  |  |
Settlement | $ 0.9 | $ 1.5 |  | $ 25.9 |
Pension Plan |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | $ 12.3 | 13.3 | $ 12.4
Interest cost |  |  | 18.9 | 18.2 | 22.0
Expected return on plan assets |  |  | (25.5) | (27.7) | (32.1)
Amortization of prior service cost |  |  | (0.2) | (0.1) | (0.2)
Recognized net actuarial loss |  |  | 11.0 | 10.9 | 11.4
Other Adjustments |  |  | 2.8 |  |
Special Events |  |  |  |  |
Settlement |  |  | 1.3 | 27.8 | 0.1
Net periodic pension (benefit) cost |  |  | 20.6 | 42.4 | 13.6
Pension Plan | United States |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | 10.8 | 11.8 | 10.2
Interest cost |  |  | 13.2 | 12.9 | 13.7
Expected return on plan assets |  |  | (16.8) | (15.6) | (19.0)
Amortization of prior service cost |  |  | (0.1) | 0.0 | (0.1)
Recognized net actuarial loss |  |  | 8.1 | 8.1 | 9.3
Other Adjustments |  |  | 0.0 |  |
Special Events |  |  |  |  |
Settlement |  |  | 0.0 | 25.9 | 0.0
Net periodic pension (benefit) cost |  |  | 15.2 | 43.1 | 14.1
Pension Plan | Foreign Plan | Germany |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | 0.4 | 0.5 | 0.5
Interest cost |  |  | 0.5 | 0.5 | 0.8
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 |  |  | 1.1 | 1.3 | 1.0
Other Adjustments |  |  | 0.0 |  |
Special Events |  |  |  |  |
Settlement |  |  | 0.0 | 0.7 | 0.0
Net periodic pension (benefit) cost |  |  | 2.0 | 3.0 | 2.3
Pension Plan | Foreign Plan | United Kingdom |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | 0.5 | 0.5 | 0.8
Interest cost |  |  | 4.0 | 3.8 | 5.7
Expected return on plan assets |  |  | (6.5) | (10.2) | (10.7)
Amortization of prior service cost |  |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  |  | 1.7 | 1.5 | 0.8
Other Adjustments |  |  | 2.8 |  |
Special Events |  |  |  |  |
Settlement |  |  | 1.3 | 1.2 | 0.0
Net periodic pension (benefit) cost |  |  | 3.8 | (3.2) | (3.4)
Pension Plan | Foreign Plan | Netherlands |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | 0.5 | 0.4 | 0.7
Interest cost |  |  | 0.9 | 0.7 | 1.4
Expected return on plan assets |  |  | (1.4) | (1.2) | (1.7)
Amortization of prior service cost |  |  | (0.1) | (0.1) | (0.1)
Recognized net actuarial loss |  |  | 0.0 | 0.0 | 0.3
Other Adjustments |  |  | 0.0 |  |
Special Events |  |  |  |  |
Settlement |  |  | 0.0 | 0.0 | 0.0
Net periodic pension (benefit) cost |  |  | (0.1) | (0.2) | 0.6
Pension Plan | Foreign Plan | Other International |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Service cost |  |  | 0.1 | 0.1 | 0.2
Interest cost |  |  | 0.3 | 0.3 | 0.4
Expected return on plan assets |  |  | (0.8) | (0.7) | (0.7)
Amortization of prior service cost |  |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  |  | 0.1 | 0.0 | 0.0
Other Adjustments |  |  | 0.0 |  |
Special Events |  |  |  |  |
Settlement |  |  | 0.0 | 0.0 | 0.1
Net periodic pension (benefit) cost |  |  | $ (0.3) | $ (0.3) | $ 0.0

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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/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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