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Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2021 | Jan. 31, 2021 | Apr. 30, 2020 | Jan. 31, 2020 | Apr. 30, 2021 | Apr. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |
Accumulated other comprehensive income (loss), Beginning balance |  | $ 1,758,991 |  |  | $ 1,758,991 |
Amortization of prior service costs and net actuarial losses, net of tax of ($3,485) | $ 8,385 |  | $ 3,898 |  | 11,382 | $ 7,127
Foreign currency translation adjustments | (6,943) | 28,433 | (21,227) | $ 2,793 | 21,490 | $ (18,434)
Accumulated other comprehensive loss, Ending balance | 1,950,357 |  |  |  | 1,950,357 |
Amortization of prior service costs and net actuarial losses, tax |  |  |  |  | 3,485 |
Cumulative translation adjustments |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |
Accumulated other comprehensive income (loss), Beginning balance |  | (40,422) |  |  | (40,422) |
Amortization of prior service costs and net actuarial losses, net of tax of ($3,485) |  |  |  |  | 0 |
Foreign currency translation adjustments |  |  |  |  | 21,490 |
Accumulated other comprehensive loss, Ending balance | (18,932) |  |  |  | (18,932) |
Pension and postretirement benefit plan adjustments |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |
Accumulated other comprehensive income (loss), Beginning balance |  | (185,696) |  |  | (185,696) |
Amortization of prior service costs and net actuarial losses, net of tax of ($3,485) |  |  |  |  | 11,382 |
Foreign currency translation adjustments |  |  |  |  | 0 |
Accumulated other comprehensive loss, Ending balance | (174,314) |  |  |  | (174,314) |
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |  |  |
Accumulated other comprehensive income (loss), Beginning balance |  | (226,118) |  |  | (226,118) |
Foreign currency translation adjustments | (6,943) | $ 28,433 | $ (21,227) | $ 2,793 |  |
Accumulated other comprehensive loss, Ending balance | $ (193,246) |  |  |  | $ (193,246) |

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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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