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) (0.50%) 0.40% (0.80%) 0.40%
Operating expenses 3.30% 3.30% 3.40% 3.30%
Incentive fees 0.40% 0.00% 0.60% 0.00%
Total expenses 3.70% 3.30% 4.00% 3.30%
Total return:        
Total return before incentive fees 2.70% 1.40% 9.50% (0.80%)
Incentive fees (0.40%) 0.00% (0.70%) 0.00%
Total return after incentive fees 2.30% 1.40% 8.80% (0.80%)
Class D Redeemable Units [Member]        
Ratios to Average Limited Partners' Capital:        
Net investment income (loss) (0.50%) 0.40% (0.80%) 0.40%
Operating expenses 3.30% 3.20% 3.40% 3.30%
Incentive fees 0.40% 0.00% 0.60% 0.00%
Total expenses 3.70% 3.20% 4.00% 3.30%
Total return:        
Total return before incentive fees 2.70% 1.40% 9.50% (0.80%)
Incentive fees (0.40%) 0.00% (0.70%) 0.00%
Total return after incentive fees 2.30% 1.40% 8.80% (0.80%)
Class Z Redeemable Units [Member]        
Ratios to Average Limited Partners' Capital:        
Net investment income (loss) 0.20% 1.20% 0.00% 1.20%
Operating expenses 2.50% 2.50% 2.60% 2.50%
Incentive fees 0.40% 0.00% 0.60% 0.00%
Total expenses 2.90% 2.50% 3.20% 2.50%
Total return:        
Total return before incentive fees 2.90% 1.60% 9.90% (0.40%)
Incentive fees (0.40%) 0.00% (0.60%) 0.00%
Total return after incentive fees 2.50% 1.60% 9.30% (0.40%)