Stock-Based Compensation - Summarized Activity Related to Director Deferred Compensation Shares (Detail) - Directors [Member] - Deferred Compensation Share Equivalent Units [Member] shares in Thousands	3 Months Ended
	Jan. 31, 2017 $ / shares shares
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	99
Number of Shares, Dividend equivalents | shares	1
Number of Shares, Distributions | shares	(3)
Number of Shares, Outstanding, Ending balance | shares	97
Weighted-Average Grant Date Fair Value, Beginning balance | $ / shares	$ 41.72
Weighted-Average Grant Date Fair Value, Dividend equivalents | $ / shares	113.42
Weighted-Average Grant Date Fair Value, Distributions | $ / shares	26.78
Weighted-Average Grant Date Fair Value, Ending balance | $ / shares	$ 42.31