Common Unit Repurchase and Retirement - Company's Repurchase Activities (Detail) - $ / shares		1 Months Ended			3 Months Ended		120 Months Ended	122 Months Ended
		Mar. 31, 2023	Feb. 28, 2023	Jan. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Aug. 31, 2022	Apr. 30, 2023
Repurchase Plan
Capital Unit [Line Items]
Total Number of Units Purchased		0	78,000	0	78,000	411,000	24,933,000	19,900,000
Average Price Paid per Unit	[1]	$ 0	$ 11.20	$ 0	$ 11.20	$ 8.77	$ 8.82
Maximum Number of Units that May Yet Be Purchased		1,068,000	1,068,000	1,146,000	1,068,000	1,146,000	1,557,000
Repurchase Plan | Subsequent Event
Capital Unit [Line Items]
Maximum Number of Units that May Yet Be Purchased	[2]								1,068,000
Publicly Announced Plans or Programs As Part of Repurchase Plan
Capital Unit [Line Items]
Total Number of Units Purchased		0	78,000	0	78,000	411,000	20,045,000

[1] Amount includes repurchase costs.

[2] Of the total available for repurchase, approximately 0.8 million units are available for repurchase in open market transactions and 0.3 million units are available for repurchase in privately-negotiated transactions, under the Repurchase Plan.