Shareholder Report, Average Annual Return (Details)
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12 Months Ended |
60 Months Ended |
120 Months Ended |
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
| C000088099_1_BBIndexMember_1YRMember |
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|
| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.89%
|
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| C000088099_1_BBIndexMember_5YRMember |
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|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000088099_1_BBIndexMember_10YRMember |
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| Average Annual Return [Line Items] |
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|
| Average Annual Return, Percent |
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|
1.40%
|
| C000088100_1_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
1.89%
|
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| C000088100_1_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000088100_1_BBIndexMember_10YRMember |
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|
| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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1.40%
|
| C000100043_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.89%
|
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| C000100043_0_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000100043_0_BBIndexMember_10YRMember |
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|
| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
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|
1.40%
|
| C000205023_1_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.89%
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| C000205023_1_BBIndexMember_5YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
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(0.29%)
|
|
| C000205023_1_BBIndexMember_LOCMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.92%
|
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|
| C000211071_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.89%
|
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| C000211071_0_BBIndexMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
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(0.29%)
|
|
| C000211071_0_BBIndexMember_LOCMember |
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
1.44%
|
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| C000088097_1_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
1.89%
|
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|
| C000088097_1_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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(0.29%)
|
|
| C000088097_1_BBIndexMember_10YRMember |
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|
|
| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
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1.40%
|
| C000069436_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
1.89%
|
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|
| C000069436_0_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000069436_0_BBIndexMember_10YRMember |
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| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
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1.40%
|
| C000088096_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.89%
|
|
|
| C000088096_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000088096_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
1.40%
|
| C000153158_1_BBIndexMember_1YRMember |
|
|
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
1.89%
|
|
|
| C000153158_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000153158_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
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1.40%
|
| C000177581_0_BBIndexMember_1YRMember |
|
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.89%
|
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|
| C000177581_0_BBIndexMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(0.29%)
|
|
| C000177581_0_BBIndexMember_LOCMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.85%
|
|
|
| C000088101_1_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
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| Average Annual Return, Percent |
1.89%
|
|
|
| C000088101_1_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000088101_1_BBIndexMember_10YRMember |
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|
|
| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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1.40%
|
| C000088099_ClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(0.32%)
|
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| C000088099_ClassMember_5YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(1.23%)
|
|
| C000088099_ClassMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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1.48%
|
| C000088099_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
0.66%
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| C000088099_NoLoadClassMember_5YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(1.23%)
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|
| C000088099_NoLoadClassMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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1.48%
|
| C000088099_0_AdditionalIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.98%
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| C000088099_0_AdditionalIndexMember_5YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(0.07%)
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| C000088099_0_AdditionalIndexMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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2.21%
|
| C000088100_ClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(2.67%)
|
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| C000088100_ClassMember_5YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(1.33%)
|
|
| C000088100_ClassMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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1.62%
|
| C000088100_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.39%
|
|
|
| C000088100_NoLoadClassMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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(0.52%)
|
|
| C000088100_NoLoadClassMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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2.04%
|
| C000088100_0_AdditionalIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
1.98%
|
|
|
| C000088100_0_AdditionalIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
|
(0.07%)
|
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| C000088100_0_AdditionalIndexMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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2.21%
|
| C000100043_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.94%
|
|
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| C000100043_NoLoadClassMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
|
(0.29%)
|
|
| C000100043_NoLoadClassMember_10YRMember |
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|
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
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1.37%
|
| C000205023_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.83%
|
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|
| C000205023_NoLoadClassMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
|
(0.07%)
|
|
| C000205023_NoLoadClassMember_2025-09-01_2026-08-31Member |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
2.92%
|
|
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| C000205023_0_AdditionalIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.98%
|
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| C000205023_0_AdditionalIndexMember_5YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
(0.07%)
|
|
| C000205023_0_AdditionalIndexMember_LOCMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
2.72%
|
|
|
| C000211071_NoLoadClassMember_1YRMember |
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|
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
1.94%
|
|
|
| C000211071_NoLoadClassMember_5YRMember |
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|
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.30%)
|
|
| C000211071_NoLoadClassMember_2025-09-01_2026-08-31Member |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.43%
|
|
|
| C000088097_ClassMember_1YRMember |
|
|
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
(2.64%)
|
|
|
| C000088097_ClassMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(1.29%)
|
|
| C000088097_ClassMember_10YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
1.67%
|
| C000088097_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.41%
|
|
|
| C000088097_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.48%)
|
|
| C000088097_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.09%
|
| C000088097_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.98%
|
|
|
| C000088097_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.07%)
|
|
| C000088097_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.21%
|
| C000069436_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.99%
|
|
|
| C000069436_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
0.36%
|
|
| C000069436_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.26%
|
| C000088096_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.74%
|
|
|
| C000088096_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.16%)
|
|
| C000088096_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.42%
|
| C000088096_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.98%
|
|
|
| C000088096_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.07%)
|
|
| C000088096_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.21%
|
| C000153158_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.28%
|
|
|
| C000153158_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
2.98%
|
|
| C000153158_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.71%
|
| C000153158_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.22%
|
|
|
| C000153158_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
2.70%
|
|
| C000153158_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.56%
|
| C000177581_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.92%
|
|
|
| C000177581_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.30%)
|
|
| C000177581_NoLoadClassMember_2025-09-01_2026-08-31Member |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.82%
|
|
|
| C000088101_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.69%
|
|
|
| C000088101_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.21%)
|
|
| C000088101_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.37%
|
| C000088101_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.98%
|
|
|
| C000088101_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.07%)
|
|
| C000088101_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.21%
|