Debt - Margin for Borrowings under Revolving Credit Facility (Details)	Apr. 30, 2021
I
Line of Credit Facility [Line Items]
Commitment Fee	0.30%
I | Eurodollar Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	3.00%
I | Base Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.00%
I | Letter of Credit
Line of Credit Facility [Line Items]
Letter of Credit Fee	3.00%
I | Minimum
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	3,000,000.00
II
Line of Credit Facility [Line Items]
Commitment Fee	0.25%
II | Eurodollar Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.75%
II | Base Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.75%
II | Letter of Credit
Line of Credit Facility [Line Items]
Letter of Credit Fee	2.75%
II | Maximum
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	3,000,000.00
II | Minimum
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	2,000,000.00
III
Line of Credit Facility [Line Items]
Commitment Fee	0.20%
III | Eurodollar Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.50%
III | Base Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.50%
III | Letter of Credit
Line of Credit Facility [Line Items]
Letter of Credit Fee	2.50%
III | Maximum
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	2,000,000.00
III | Minimum
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	1,500,000
IV
Line of Credit Facility [Line Items]
Consolidated Total Leverage Ratio	1,500,000
Commitment Fee	0.20%
IV | Eurodollar Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	2.25%
IV | Base Rate Loans
Line of Credit Facility [Line Items]
Basis spread (as a percent)	1.25%
IV | Letter of Credit
Line of Credit Facility [Line Items]
Letter of Credit Fee	2.25%