v3.25.1
Transactions with Affiliates - Schedule of Interest Paid by Each Series to Managing Owner (Details) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 4,260 $ 6,149
Class 2 [Member] | The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 1 $ 2
Ratio to Average Net Assets 0.02% 0.03%
Class 2 [Member] | The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 452 $ 571
Ratio to Average Net Assets 0.07% 0.06%
Class 2 [Member] | The Series of Frontier Funds [Member] | Frontier Select Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 29 $ 55
Ratio to Average Net Assets 0.10% 0.11%
Class 2 [Member] | The Series of Frontier Funds [Member] | Frontier Global Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 20 $ 34
Ratio to Average Net Assets 0.07% 0.08%
Class 2 [Member] | The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 67 $ 77
Ratio to Average Net Assets 0.09% 0.05%
Class 3 [Member] | The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 35 $ 133
Ratio to Average Net Assets 0.02% 0.02%
Class 1 [Member] | The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 1,706 $ 2,465
Ratio to Average Net Assets 0.07% 0.06%
Class 1 [Member] | The Series of Frontier Funds [Member] | Frontier Select Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 480 $ 840
Ratio to Average Net Assets 0.10% 0.11%
Class 1 [Member] | The Series of Frontier Funds [Member] | Frontier Global Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 540 $ 1,049
Ratio to Average Net Assets 0.07% 0.08%
Class 1 [Member] | The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 870 $ 837
Ratio to Average Net Assets 0.09% 0.06%
Class 1AP [Member] | The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 29 $ 32
Ratio to Average Net Assets 0.07% 0.06%
Class 1AP [Member] | The Series of Frontier Funds [Member] | Frontier Select Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 5 $ 8
Ratio to Average Net Assets 0.09% 0.11%
Class 1AP [Member] | The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 6 $ 5
Ratio to Average Net Assets 0.09% 0.05%
Class 2a [Member] | The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 1 $ 2
Ratio to Average Net Assets 0.01% 0.01%
Class 3a [Member] | The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]    
Related Party Transaction [Line Items]    
Gross Amount Paid to the Managing Owner $ 19 $ 39
Ratio to Average Net Assets 0.02% 0.01%