Shareholder Report, Line Graph (Details) - USD ($)
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12 Months Ended |
132 Months Ended |
Jul. 31, 2026 |
Jul. 31, 2026 |
| C000133805_0_LG_BBIndexMember_11YRMember |
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| Account Value [Line Items] |
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| Line Graph and Table Measure Name |
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<span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg Commodity Total Return Index</span>
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| C000133805_0_BBIndexMember_AsOf_2016Member |
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| Account Value [Line Items] |
|
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| Accumulated Value |
$ 10,000
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| C000133805_0_BBIndexMember_AsOf_2017Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,273
|
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| C000133805_0_BBIndexMember_AsOf_2018Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,526
|
|
| C000133805_0_BBIndexMember_AsOf_2019Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,015
|
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| C000133805_0_BBIndexMember_AsOf_2020Member |
|
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| Account Value [Line Items] |
|
|
| Accumulated Value |
7,927
|
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| C000133805_0_BBIndexMember_AsOf_2021Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
11,120
|
|
| C000133805_0_BBIndexMember_AsOf_2022Member |
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| Account Value [Line Items] |
|
|
| Accumulated Value |
14,147
|
|
| C000133805_0_BBIndexMember_AsOf_2023Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,032
|
|
| C000133805_0_BBIndexMember_AsOf_2024Member |
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|
| Account Value [Line Items] |
|
|
| Accumulated Value |
12,358
|
|
| C000133805_0_BBIndexMember_AsOf_2025Member |
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|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,558
|
|
| C000133805_0_BBIndexMember_AsOf_2026Member |
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|
| Account Value [Line Items] |
|
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| Accumulated Value |
19,969
|
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| C000133805_4_LG_BBIndexMember_11YRMember |
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| Account Value [Line Items] |
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| Line Graph and Table Measure Name |
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<span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI ACWI (All Country World Index) Index</span>
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| C000133805_4_BBIndexMember_AsOf_2016Member |
|
|
| Account Value [Line Items] |
|
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| Accumulated Value |
10,000
|
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| C000133805_4_BBIndexMember_AsOf_2017Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
11,753
|
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| C000133805_4_BBIndexMember_AsOf_2018Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,092
|
|
| C000133805_4_BBIndexMember_AsOf_2019Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,532
|
|
| C000133805_4_BBIndexMember_AsOf_2020Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
14,564
|
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| C000133805_4_BBIndexMember_AsOf_2021Member |
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| Account Value [Line Items] |
|
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| Accumulated Value |
19,458
|
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| C000133805_4_BBIndexMember_AsOf_2022Member |
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| Account Value [Line Items] |
|
|
| Accumulated Value |
17,474
|
|
| C000133805_4_BBIndexMember_AsOf_2023Member |
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| Account Value [Line Items] |
|
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| Accumulated Value |
19,804
|
|
| C000133805_4_BBIndexMember_AsOf_2024Member |
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| Account Value [Line Items] |
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| Accumulated Value |
23,253
|
|
| C000133805_4_BBIndexMember_AsOf_2025Member |
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| Account Value [Line Items] |
|
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| Accumulated Value |
27,031
|
|
| C000133805_4_BBIndexMember_AsOf_2026Member |
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| Account Value [Line Items] |
|
|
| Accumulated Value |
33,101
|
|
| C000133805_LG_ClassMember_11YRMember |
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| Account Value [Line Items] |
|
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| Line Graph and Table Measure Name |
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<span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Commodity Strategy Central Fund</span>
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| C000133805_ClassMember_AsOf_2016Member |
|
|
| Account Value [Line Items] |
|
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| Accumulated Value |
10,000
|
|
| C000133805_ClassMember_AsOf_2017Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,177
|
|
| C000133805_ClassMember_AsOf_2018Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,702
|
|
| C000133805_ClassMember_AsOf_2019Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,976
|
|
| C000133805_ClassMember_AsOf_2020Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
8,939
|
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| C000133805_ClassMember_AsOf_2021Member |
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| Account Value [Line Items] |
|
|
| Accumulated Value |
12,443
|
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| C000133805_ClassMember_AsOf_2022Member |
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|
| Account Value [Line Items] |
|
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| Accumulated Value |
15,883
|
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| C000133805_ClassMember_AsOf_2023Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
14,470
|
|
| C000133805_ClassMember_AsOf_2024Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,954
|
|
| C000133805_ClassMember_AsOf_2025Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
15,269
|
|
| C000133805_ClassMember_AsOf_2026Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
19,706
|
|
| C000133805_LG_1_AdditionalIndexMember_11YRMember |
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| Account Value [Line Items] |
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|
| Line Graph and Table Measure Name |
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<span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Commodity Strategy Linked Index</span>
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| C000133805_1_AdditionalIndexMember_AsOf_2016Member |
|
|
| Account Value [Line Items] |
|
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| Accumulated Value |
10,000
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2017Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,077
|
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| C000133805_1_AdditionalIndexMember_AsOf_2018Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,352
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2019Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,797
|
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| C000133805_1_AdditionalIndexMember_AsOf_2020Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
8,614
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2021Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
12,084
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2022Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
15,374
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2023Member |
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|
| Account Value [Line Items] |
|
|
| Accumulated Value |
14,162
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2024Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,429
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2025Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
14,734
|
|
| C000133805_1_AdditionalIndexMember_AsOf_2026Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
18,904
|
|
| C000133805_LG_2_AdditionalIndexMember_11YRMember |
|
|
| Account Value [Line Items] |
|
|
| Line Graph and Table Measure Name |
|
<span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Bloomberg Commodity 3 Month Forward Total Return Index</span>
|
| C000133805_2_AdditionalIndexMember_AsOf_2016Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,000
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2017Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,250
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2018Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,750
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2019Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
10,237
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2020Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
9,671
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2021Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
13,744
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2022Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
18,015
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2023Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
17,196
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2024Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
16,736
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2025Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
18,294
|
|
| C000133805_2_AdditionalIndexMember_AsOf_2026Member |
|
|
| Account Value [Line Items] |
|
|
| Accumulated Value |
$ 23,489
|
|