v3.26.1
Financial Highlights - Ratios to Average Limited Partners' Capital (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Class A Redeemable Units [Member]        
Ratios to Average Limited Partners' Capital:        
Net investment income (loss) [1] (1.10%) (0.80%) (1.20%) (0.60%)
Operating expenses 4.00% 4.00% 4.10% 3.90%
Incentive fees 0.10% 0.00% 0.10% 0.00%
Total expenses 4.10% 4.00% 4.20% 3.90%
Total return:        
Total return before incentive fees (0.10%) (5.90%) 5.30% (7.30%)
Incentive fees (0.10%) 0.00% (0.10%) 0.00%
Total return after incentive fees (0.20%) (5.90%) 5.20% (7.30%)
Class Z Redeemable Units [Member]        
Ratios to Average Limited Partners' Capital:        
Net investment income (loss) [1] (0.40%) (0.10%) (0.50%) 0.10%
Operating expenses 3.40% 3.30% 3.40% 3.20%
Incentive fees 0.10% 0.00% 0.10% 0.00%
Total expenses 3.50% 3.30% 3.50% 3.20%
Total return:        
Total return before incentive fees 0.20% (5.70%) 5.70% (7.00%)
Incentive fees (0.20%) 0.00% (0.10%) 0.00%
Total return after incentive fees 0.00% (5.70%) 5.60% (7.00%)
[1] Interest income less total expenses.