Long-Term debt obligations - Leverage Ratio on which Spread on Libor Borrowings and Commitment Fee for Unused Balance of Revolving Credit Agreement are Determined (Details)	12 Months Ended
	Oct. 31, 2020
Greater than 25 percent
Line of Credit Facility [Line Items]
Leverage Ratio	25.00%
Spread	0.25%
Commitment Fee	0.20%
Greater than or equal to 25 percent less than or equal to 35 percent
Line of Credit Facility [Line Items]
Spread	0.50%
Commitment Fee	0.25%
Greater than or equal to 25 percent less than or equal to 35 percent | Minimum
Line of Credit Facility [Line Items]
Leverage Ratio	25.00%
Greater than or equal to 25 percent less than or equal to 35 percent | Maximum
Line of Credit Facility [Line Items]
Leverage Ratio	35.00%
Greater than or equal to 35 percent less than or equal to 45 percent
Line of Credit Facility [Line Items]
Spread	1.00%
Commitment Fee	0.30%
Greater than or equal to 35 percent less than or equal to 45 percent | Minimum
Line of Credit Facility [Line Items]
Leverage Ratio	35.00%
Greater than or equal to 35 percent less than or equal to 45 percent | Maximum
Line of Credit Facility [Line Items]
Leverage Ratio	45.00%
Greater than or equal to 45 Percent
Line of Credit Facility [Line Items]
Leverage Ratio	45.00%
Spread	1.50%
Commitment Fee	0.35%