v3.26.3
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jul. 31, 2026
Jul. 31, 2026
Jul. 31, 2026
C000130874_2_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 35.53%    
C000130874_2_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.57%  
C000130874_2_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     7.16%
C000130874_3_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.46%    
C000130874_3_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.21%  
C000130874_3_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.72%
C000206762_2_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.46%    
C000206762_2_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.21%  
C000206762_2_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.96%    
C000175832_3_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.46%    
C000175832_3_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.21%  
C000175832_3_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.35%    
C000130874_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.54%    
C000130874_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.13%  
C000130874_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.32%
C000130874_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.30%    
C000130874_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.36%  
C000130874_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.57%
C000130874_1_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.40%    
C000130874_1_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.31%  
C000130874_1_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.91%
C000206762_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 47.14%    
C000206762_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.66%  
C000206762_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.65%    
C000206762_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 49.78%    
C000206762_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.50%  
C000206762_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.30%    
C000206762_1_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 49.78%    
C000206762_1_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   16.56%  
C000206762_1_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.54%    
C000175832_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.67%    
C000175832_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   8.41%  
C000175832_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.42%    
C000175832_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.30%    
C000175832_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.36%  
C000175832_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.28%    
C000175832_1_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.40%    
C000175832_1_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.31%  
C000175832_1_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 9.67%    
C000175832_2_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 35.53%    
C000175832_2_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.57%  
C000175832_2_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.93%