Shareholder Report, Average Annual Return (Details)
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12 Months Ended |
60 Months Ended |
120 Months Ended |
Aug. 31, 2025 |
Aug. 31, 2025 |
Aug. 31, 2025 |
| C000211071_0_BBIndexMember_1YRMember |
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|
| Average Annual Return [Line Items] |
|
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| Average Annual Return, Percent |
3.14%
|
|
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| C000211071_0_BBIndexMember_5YRMember |
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|
| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000211071_0_BBIndexMember_LOCMember |
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| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
1.37%
|
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| C000177581_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
3.14%
|
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|
| C000177581_0_BBIndexMember_5YRMember |
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|
| Average Annual Return [Line Items] |
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|
| Average Annual Return, Percent |
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(0.68%)
|
|
| C000177581_0_BBIndexMember_LOCMember |
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|
| Average Annual Return [Line Items] |
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|
| Average Annual Return, Percent |
1.85%
|
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| C000069436_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
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|
| Average Annual Return, Percent |
3.14%
|
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|
| C000069436_0_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000069436_0_BBIndexMember_10YRMember |
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|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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|
1.80%
|
| C000100043_0_BBIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.14%
|
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| C000100043_0_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
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|
|
| Average Annual Return, Percent |
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(0.68%)
|
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| 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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1.80%
|
| C000153158_1_BBIndexMember_1YRMember |
|
|
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000153158_1_BBIndexMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000153158_1_BBIndexMember_10YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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|
1.80%
|
| C000088100_1_BBIndexMember_1YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000088100_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000088100_1_BBIndexMember_10YRMember |
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|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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|
1.80%
|
| C000088096_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000088096_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000088096_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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|
1.80%
|
| C000088099_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000088099_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000088099_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
1.80%
|
| C000205023_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000205023_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000205023_1_BBIndexMember_LOCMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.93%
|
|
|
| C000088101_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
3.14%
|
|
|
| C000088101_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000088101_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
1.80%
|
| C000088097_1_BBIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.14%
|
|
|
| C000088097_1_BBIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.68%)
|
|
| C000088097_1_BBIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
1.80%
|
| C000211071_NoLoadClassMember_1YRMember |
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|
| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.08%
|
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|
| C000211071_NoLoadClassMember_5YRMember |
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|
|
| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
(0.71%)
|
|
| C000211071_NoLoadClassMember_2024-09-01_2025-08-31Member |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.35%
|
|
|
| C000177581_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.13%
|
|
|
| C000177581_NoLoadClassMember_5YRMember |
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| Average Annual Return [Line Items] |
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|
| Average Annual Return, Percent |
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(0.73%)
|
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| C000177581_NoLoadClassMember_2024-09-01_2025-08-31Member |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
1.81%
|
|
|
| C000069436_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
3.74%
|
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|
| C000069436_NoLoadClassMember_5YRMember |
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
|
0.38%
|
|
| C000069436_NoLoadClassMember_10YRMember |
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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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2.74%
|
| C000100043_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
3.11%
|
|
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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 |
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(0.71%)
|
|
| C000100043_NoLoadClassMember_10YRMember |
|
|
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
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|
1.77%
|
| C000153158_NoLoadClassMember_1YRMember |
|
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
5.26%
|
|
|
| C000153158_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 |
|
2.51%
|
|
| C000153158_NoLoadClassMember_10YRMember |
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|
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.58%
|
| C000153158_0_AdditionalIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
5.22%
|
|
|
| C000153158_0_AdditionalIndexMember_5YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
|
2.24%
|
|
| C000153158_0_AdditionalIndexMember_10YRMember |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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|
2.48%
|
| C000088100_ClassMember_1YRMember |
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| Average Annual Return [Line Items] |
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|
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| Average Annual Return, Percent |
(0.53%)
|
|
|
| C000088100_ClassMember_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 |
|
(1.17%)
|
|
| C000088100_ClassMember_10YRMember |
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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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|
2.33%
|
| C000088100_NoLoadClassMember_1YRMember |
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.61%
|
|
|
| C000088100_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.36%)
|
|
| C000088100_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.75%
|
| C000088100_0_AdditionalIndexMember_1YRMember |
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| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088100_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000088100_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.91%
|
| C000088096_NoLoadClassMember_1YRMember |
|
|
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| Average Annual Return [Line Items] |
|
|
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| Average Annual Return, Percent |
3.97%
|
|
|
| C000088096_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
0.00%
|
|
| C000088096_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
3.14%
|
| C000088096_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088096_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000088096_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.91%
|
| C000088099_ClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
1.87%
|
|
|
| C000088099_ClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(1.08%)
|
|
| C000088099_ClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.18%
|
| C000088099_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
2.87%
|
|
|
| C000088099_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(1.08%)
|
|
| C000088099_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.18%
|
| C000088099_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088099_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000088099_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.91%
|
| C000205023_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
4.07%
|
|
|
| C000205023_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
0.09%
|
|
| C000205023_NoLoadClassMember_2024-09-01_2025-08-31Member |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.07%
|
|
|
| C000205023_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000205023_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000205023_0_AdditionalIndexMember_LOCMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
2.83%
|
|
|
| C000088101_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088101_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.05%)
|
|
| C000088101_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
3.09%
|
| C000088101_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088101_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000088101_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.91%
|
| C000088097_ClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
(0.50%)
|
|
|
| C000088097_ClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(1.13%)
|
|
| C000088097_ClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.39%
|
| C000088097_NoLoadClassMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.64%
|
|
|
| C000088097_NoLoadClassMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.32%)
|
|
| C000088097_NoLoadClassMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.81%
|
| C000088097_0_AdditionalIndexMember_1YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
3.92%
|
|
|
| C000088097_0_AdditionalIndexMember_5YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
(0.01%)
|
|
| C000088097_0_AdditionalIndexMember_10YRMember |
|
|
|
| Average Annual Return [Line Items] |
|
|
|
| Average Annual Return, Percent |
|
|
2.91%
|