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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, 2019
Jan. 31, 2019
Apr. 30, 2018
Jan. 31, 2018
Apr. 30, 2019
Apr. 30, 2018
Accumulated Other Comprehensive Income Loss [Line Items]            
Accumulated other comprehensive income (loss), Beginning balance   $ (179,314)     $ (179,314)  
Amortization of prior service cost and net actuarial losses, net of tax $ 1,598   $ 2,812   2,950 $ 4,321
Foreign currency translation adjustments (9,064) 16,463 $ (19,284) $ 38,582 7,399 $ 19,298
Accumulated other comprehensive loss, Ending balance (168,965)       (168,965)  
Cumulative Translation Adjustments [Member]            
Accumulated Other Comprehensive Income Loss [Line Items]            
Accumulated other comprehensive income (loss), Beginning balance   (57,042)     (57,042)  
Foreign currency translation adjustments         7,399  
Accumulated other comprehensive loss, Ending balance (49,643)       (49,643)  
Pension And Postretirement Benefit Plan Adjustments [Member]            
Accumulated Other Comprehensive Income Loss [Line Items]            
Accumulated other comprehensive income (loss), Beginning balance   $ (122,272)     (122,272)  
Amortization of prior service cost and net actuarial losses, net of tax         2,950  
Accumulated other comprehensive loss, Ending balance $ (119,322)       $ (119,322)