Shareholder Report, Average Annual Return (Details) 199147_Abacus Flexible Bond Leaders ETF_TF_TSR Annual {TF}

12 Months Ended

60 Months Ended

68 Months Ended

Jul. 31, 2026

Jul. 31, 2026

Jul. 31, 2026

Abacus Flexible Bond Leaders ETF

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Abacus Flexible Bond Leaders ETF NAV

Average Annual Return, Percent

^[1]

2.81%

0.69%

1.13%

Bloomberg US Aggregate Bond Index [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Bloomberg US Aggregate Bond Index

Average Annual Return, Percent

2.71%

(0.40%)

(0.37%)

Abacus Flexible Bond Leaders Index [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Abacus Flexible Bond Leaders Index

Average Annual Return, Percent

^[1]

1.51%

3.01%

2.65%

[1]

1

Performance of the Fund and Abacus Flexible Bond Leaders Index (“Underlying Index”) shown prior to June 6, 2025, reflects the Fund’s and Underlying Index’s prior principal investment strategy and methodology, respectively; the Fund’s and Underlying Index’s performance would have differed if the Fund’s and Underlying Index’s current principal investment strategy and methodology, respectively, had been in place.