v3.26.3
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Aug. 31, 2026
Aug. 31, 2026
Aug. 31, 2026
C000235234_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235234_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235233_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235233_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235230_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235230_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235232_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235232_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235231_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235231_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235229_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235229_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235217_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235217_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235220_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235220_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235222_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235222_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235221_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235221_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235218_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235218_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000235219_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235219_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000199795_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000199795_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.29%)  
C000199795_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000194645_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000194645_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.29%)  
C000194645_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.57%    
C000242612_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000242612_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.96%    
C000203456_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000203456_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.29%)  
C000203456_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.83%    
C000235215_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000235215_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.78%    
C000242809_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000242809_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.32%    
C000098000_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000098000_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.29%)  
C000098000_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     1.40%
C000243069_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000243069_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.78%    
C000243071_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000243071_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.78%    
C000243070_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000243070_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.78%    
C000235234_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.70%    
C000235234_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.17%    
C000235234_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235234_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235233_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.75%    
C000235233_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.22%    
C000235233_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235233_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235230_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.98%    
C000235230_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.63%    
C000235230_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235230_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.99%    
C000235230_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235230_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235232_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.70%    
C000235232_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.17%    
C000235232_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235232_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235231_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.75%    
C000235231_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.12%    
C000235231_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.74%    
C000235231_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.12%    
C000235231_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235231_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235229_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.94%    
C000235229_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.61%    
C000235229_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.50%    
C000235229_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.97%    
C000235229_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235229_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000235217_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.70%    
C000235217_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.83%    
C000235217_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235217_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235220_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235220_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.92%    
C000235220_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235220_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235222_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (2.64%)    
C000235222_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.64%    
C000235222_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.41%    
C000235222_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.58%    
C000235222_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235222_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235221_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.70%    
C000235221_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.85%    
C000235221_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235221_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235218_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (0.24%)    
C000235218_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.82%    
C000235218_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.74%    
C000235218_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.82%    
C000235218_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235218_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000235219_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (2.59%)    
C000235219_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.66%    
C000235219_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.47%    
C000235219_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.60%    
C000235219_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000235219_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000199795_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.72%    
C000199795_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.35%)  
C000199795_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.76%    
C000199795_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000199795_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.24%)  
C000199795_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.89%    
C000194645_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.17%    
C000194645_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.70%  
C000194645_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.12%    
C000194645_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.15%    
C000194645_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.70%  
C000194645_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.17%    
C000242612_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.81%    
C000242612_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.04%    
C000242612_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.87%    
C000242612_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.97%    
C000203456_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.20%    
C000203456_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   0.13%  
C000203456_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.01%    
C000203456_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.98%    
C000203456_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   (0.07%)  
C000203456_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.65%    
C000235215_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.79%    
C000235215_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.27%    
C000235215_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.53%    
C000235215_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.68%    
C000242809_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.28%    
C000242809_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.98%    
C000242809_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.98%    
C000242809_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.80%    
C000098000_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.89%    
C000098000_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.86%  
C000098000_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.70%
C000098000_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.87%    
C000098000_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.70%  
C000098000_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.47%
C000243069_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.94%    
C000243069_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.97%    
C000243069_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.87%    
C000243069_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.73%    
C000243071_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.89%    
C000243071_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.92%    
C000243071_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.87%    
C000243071_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.73%    
C000243070_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.13%    
C000243070_ClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.23%    
C000243070_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.69%    
C000243070_NoLoadClassMember_2025-09-01_2026-08-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.71%    
C000243070_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.87%    
C000243070_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.73%