Common Unit Repurchase and Retirement - Company's Repurchase Activities (Parenthetical) (Detail) - shares	Apr. 30, 2024	May 31, 2023	Jul. 31, 2022
Capital Unit [Line Items]
Company's common units authorized for repurchase		2,600,000	1,100,000
Common Stock Available for Repurchase Under Open Market Transactions
Capital Unit [Line Items]
Company's common units authorized for repurchase		2,300,000
Common Stock Available for Repurchase Under Open Market Transactions | Subsequent Event
Capital Unit [Line Items]
Company's common units authorized for repurchase	1,900,000
Common Stock Available for Repurchase Under Privately Negotiated Transactions
Capital Unit [Line Items]
Company's common units authorized for repurchase		300,000
Common Stock Available for Repurchase Under Privately Negotiated Transactions | Subsequent Event
Capital Unit [Line Items]
Company's common units authorized for repurchase	300,000