Long-Term Debt - Credit Agreement Additional Information (Detail)	Nov. 03, 2016 USD ($)	Jan. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)	Dec. 19, 2012 USD ($)
Debt Instrument [Line Items]
Less deferred financing costs		$ 6,000,000	$ 6,400,000
Long-term debt		1,031,800,000	959,200,000
Current portion of long-term debt		15,000,000	15,000,000
Long-term debt, excluding current maturities		$ 1,010,800,000	937,800,000
2017 Credit Agreement
Debt Instrument [Line Items]
Debt issued	$ 300,000,000.0
Optional additional borrowing capacity	$ 550,000,000
Leverage ratio, adjusted EBITDA	4.00
Leverage ratio, adjusted EBITDA during collateral release period	3.75
Interest coverage ratio, adjusted EBITDA	3.00
Weighted average interest rate		2.69%
Actual interest rate		2.74%
Revolving Credit Facility | 2017 Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 800,000,000
Reduction in outstanding letter of credit		$ 14,400,000
Less deferred financing costs		5,300,000
Long-term debt		383,200,000	$ 323,800,000
Current portion of long-term debt		15,000,000
Long-term debt, excluding current maturities		368,200,000
Line of Credit | Prior Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 1,000,000,000
Current borrowing available		$ 687,400,000