v3.25.4
Shareholder Report, Line Graph (Details) - USD ($)
 6 Months Ended 12 Months Ended 18 Months Ended 24 Months Ended 30 Months Ended 36 Months Ended 42 Months Ended 48 Months Ended 54 Months Ended 60 Months Ended 66 Months Ended 72 Months Ended 78 Months Ended 84 Months Ended 90 Months Ended 96 Months Ended 102 Months Ended 108 Months Ended 114 Months Ended 120 Months Ended
Nov. 30, 2015
May 31, 2016
Nov. 30, 2025
Nov. 30, 2016
May 31, 2017
Nov. 30, 2017
May 31, 2018
Nov. 30, 2018
May 31, 2019
Nov. 30, 2019
May 31, 2020
Nov. 30, 2020
May 31, 2021
Nov. 30, 2021
May 31, 2022
Nov. 30, 2022
May 31, 2023
Nov. 30, 2023
May 31, 2024
Nov. 30, 2024
May 31, 2025
Nov. 30, 2025
C000243906 [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     First Trust Active Global Quality Income ETF                                      
Accumulated Value $ 10,000 $ 9,942   $ 9,537 $ 11,751 $ 12,282 $ 11,605 $ 10,592 $ 10,464 $ 11,759 $ 9,151 $ 10,781 $ 12,999 $ 12,194 $ 12,640 $ 12,012 $ 12,575 $ 12,641 $ 14,205 $ 14,154 $ 15,274 $ 16,922
C000247844 [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     FT Energy Income Partners Enhanced Income ETF                                      
Accumulated Value 10,000 11,058   11,835 12,335 12,326 11,477 11,970 12,930 13,063 10,247 10,540 13,050 13,118 16,558 16,935 15,795 17,805 19,833 22,968 22,389 24,438
C000257285 [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     FT Confluence BDC & Specialty Finance Income ETF                                      
Accumulated Value 10,000 10,013   11,639 12,557 12,130 11,989 12,263 12,608 14,050 7,078 9,181 11,871 12,531 12,120 11,828 11,714 13,801 16,126 16,884 16,842 16,445
MSCI Europe Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     MSCI Europe Index                                      
Accumulated Value 10,000 9,673   9,220 11,318 11,998 11,865 10,871 11,251 12,350 10,754 12,914 15,350 14,751 13,832 13,356 14,479 15,253 17,333 16,711 19,655 21,247
MSCI ACWI Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     MSCI ACWI Index                                      
Accumulated Value 10,000 10,001   10,368 11,754 12,922 13,144 12,794 12,973 14,544 13,677 16,726 19,392 19,950 18,085 17,631 18,238 19,752 22,535 24,911 25,616 29,448
Standard & Poor's 500 Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     S&P 500® Index                                      
Accumulated Value 10,000 10,193   10,805 11,973 13,276 13,695 14,109 14,213 16,382 16,038 19,242 22,504 24,615 22,437 22,348 23,093 25,441 29,602 34,063 33,603 39,175
Standard And Poor s 500 C000257285 Index [Member]                                            
Account Value [Line Items]                                            
Accumulated Value                                       34,064 33,606  
MSCI ACWI High Dividend Yield Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     MSCI ACWI High Dividend Yield Index                                      
Accumulated Value 10,000 10,350   10,547 11,881 12,720 12,467 12,718 12,735 14,272 12,619 14,444 16,758 16,054 16,577 16,179 15,796 16,689 18,267 19,504 20,165 22,156
S And P Global 1200 Energy Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     S&P Global 1200 Energy Index                                      
Accumulated Value 10,000 10,218   11,322 10,804 11,884 13,163 11,814 11,302 11,401 7,846 8,057 10,791 11,464 17,556 18,338 16,181 18,494 20,595 20,544 18,944 21,828
PHLX Utility Sector Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     PHLX Utility Sector Index                                      
Accumulated Value 10,000 11,708   11,436 13,402 14,410 13,244 14,647 15,738 17,263 16,818 18,184 19,111 19,822 22,378 21,809 20,042 19,515 23,171 26,025 26,275 29,473
Alerian MLP Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     Alerian MLP Index                                      
Accumulated Value 10,000 10,522   10,929 11,178 10,182 10,764 10,305 10,644 9,171 6,946 6,924 9,977 9,607 12,723 13,666 13,720 16,850 18,576 22,096 21,407 22,877
Blended Benchmark [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     Blended Benchmark                                      
Accumulated Value [1] 10,000 11,171   11,270 12,357 12,256 12,143 12,520 13,212 12,872 11,696 12,272 15,168 15,224 18,702 19,220 18,509 20,280 23,249 26,993 26,731 29,300
Blended Benchmark C000257285 [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     Blended Benchmark                                      
Accumulated Value [2]   10,037   11,536 12,216 12,470 12,803 12,942 13,290 14,728 10,469 13,100 17,053 17,499 16,886 16,660 15,952 18,186 20,553 21,912 21,413 21,846
MSCI USA IMI Financials Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     MSCI USA IMI Financials Index                                      
Accumulated Value 10,000 9,873   11,703 12,188 14,430 14,502 14,324 14,017 16,311 12,650 15,321 21,105 21,530 20,022 20,654 18,055 20,796 24,399 30,760 30,313 32,299
MarketVector TM US Business Development Companies Liquid Index [Member]                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name     MarketVectorTM US Business Development Companies Liquid Index                                      
Accumulated Value $ 10,000 $ 9,806   $ 11,271 $ 11,799 $ 11,753 $ 12,031 $ 12,104 $ 12,716 $ 14,048 $ 10,559 $ 12,749 $ 16,653 $ 17,423 $ 17,194 $ 17,328 $ 17,504 $ 20,019 $ 23,088 $ 23,668 $ 23,530 $ 22,918
[1]
The Blended Benchmark consists of the following: PHLX Utility Sector Index (50%) and Alerian MLP Index (50%). The Blended Benchmark reflects the diverse allocation of companies engaged in the energy infrastructure sector in the Fund’s portfolio. The indices do not charge management fees or brokerage expenses, and no such fees or expenses were deducted from the performance shown. Indexes are unmanaged and an investor cannot invest directly in an index. The Blended Benchmark returns are calculated by using the monthly return of the two indices during each period shown above. At the beginning of each month the two indices are rebalanced to a 50-50 ratio to account for divergence from that ratio that occurred during the course of each month. The monthly returns are then compounded for each period shown above, giving the performance for the Blended Benchmark for each period shown above.
[2] The Blended Benchmark consists of a 70/20/10 blend of the MVIS U.S. Business Development Companies Index, the FTSE NARIET Mortgage REIT Index and the S&P SmallCap Financials Index. The Blended Benchmark returns are calculated by using the monthly return of the three indices during each period shown above. At the beginning of each month, the three indices are rebalanced, to account for divergence from that ratio that occurred during the course of each month to the ratios noted above. The monthly returns are then compounded for each period shown above, giving the performance for the Blended Benchmark for each period shown above.