Shareholder Report, Holdings (Details)
|
Apr. 30, 2026 |
| Fidelity U.S. Sustainability Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.00%
|
| Fidelity U.S. Sustainability Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Fidelity U.S. Sustainability Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity U.S. Sustainability Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity U.S. Sustainability Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity U.S. Sustainability Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity U.S. Sustainability Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity U.S. Sustainability Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity U.S. Sustainability Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity U.S. Sustainability Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity U.S. Sustainability Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.70%
|
| Fidelity U.S. Sustainability Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.30%
|
| Fidelity U.S. Sustainability Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| Fidelity U.S. Sustainability Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity U.S. Sustainability Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity U.S. Sustainability Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity U.S. Sustainability Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Fidelity U.S. Sustainability Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Fidelity U.S. Sustainability Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.10%
|
| Fidelity U.S. Sustainability Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity U.S. Sustainability Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity U.S. Sustainability Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.60%
|
| Fidelity U.S. Sustainability Index Fund | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| Fidelity U.S. Sustainability Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| Fidelity U.S. Sustainability Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
89.60%
|
| Fidelity U.S. Sustainability Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.40%
|
| Fidelity Total International Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity Total International Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity Total International Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Total International Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity Total International Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity Total International Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Total International Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Total International Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Total International Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Total International Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Fidelity Total International Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.30%
|
| Fidelity Total International Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.50%
|
| Fidelity Total International Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity Total International Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity Total International Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Fidelity Total International Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.50%
|
| Fidelity Total International Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Fidelity Total International Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity Total International Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity Total International Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Total International Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity Total International Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Fidelity Total International Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Fidelity Total International Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Fidelity Total International Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity Total International Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Fidelity Total International Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Total International Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Fidelity Total International Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Total International Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Total International Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
33.80%
|
| Fidelity Total International Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.10%
|
| Fidelity Total International Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity Total International Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Fidelity Series Global ex U.S. Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity Series Global ex U.S. Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity Series Global ex U.S. Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity Series Global ex U.S. Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity Series Global ex U.S. Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity Series Global ex U.S. Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Series Global ex U.S. Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Series Global ex U.S. Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Series Global ex U.S. Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Series Global ex U.S. Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Series Global ex U.S. Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.00%
|
| Fidelity Series Global ex U.S. Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.10%
|
| Fidelity Series Global ex U.S. Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.70%
|
| Fidelity Series Global ex U.S. Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity Series Global ex U.S. Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.70%
|
| Fidelity Series Global ex U.S. Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Series Global ex U.S. Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| Fidelity Series Global ex U.S. Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity Series Global ex U.S. Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Fidelity Series Global ex U.S. Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity Series Global ex U.S. Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity Series Global ex U.S. Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity Series Global ex U.S. Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.40%
|
| Fidelity Series Global ex U.S. Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Fidelity Series Global ex U.S. Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Fidelity Series Global ex U.S. Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.50%
|
| Fidelity Series Global ex U.S. Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Series Global ex U.S. Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Fidelity Series Global ex U.S. Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity Series Global ex U.S. Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.70%
|
| Fidelity Series Global ex U.S. Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity Series Global ex U.S. Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.10%
|
| Fidelity Series Global ex U.S. Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity Series Global ex U.S. Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity SAI U.S. Low Volatility Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI U.S. Low Volatility Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.90%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
30.50%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.70%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.80%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Fidelity SAI U.S. Low Volatility Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.90%
|
| Fidelity SAI U.S. Low Volatility Index Fund | Puerto Rico |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Fidelity SAI U.S. Low Volatility Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.80%
|
| Fidelity SAI U.S. Low Volatility Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.20%
|
| Fidelity SAI International Value Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Fidelity SAI International Value Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity SAI International Value Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity SAI International Value Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Fidelity SAI International Value Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Value Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Value Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Value Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Value Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI International Value Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI International Value Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Fidelity SAI International Value Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity SAI International Value Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.30%
|
| Fidelity SAI International Value Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Fidelity SAI International Value Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.70%
|
| Fidelity SAI International Value Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.60%
|
| Fidelity SAI International Value Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.20%
|
| Fidelity SAI International Value Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| Fidelity SAI International Value Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.40%
|
| Fidelity SAI International Value Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Fidelity SAI International Value Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI International Value Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.60%
|
| Fidelity SAI International Value Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.90%
|
| Fidelity SAI International Value Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| Fidelity SAI International Value Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Fidelity SAI International Value Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.70%
|
| Fidelity SAI International Value Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.00%
|
| Fidelity SAI International Value Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.20%
|
| Fidelity SAI International Value Index Fund | Sweden |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity SAI International Value Index Fund | Singapore |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity SAI International Value Index Fund | Denmark |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI International Value Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
99.20%
|
| Fidelity SAI International Value Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity SAI International Quality Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Fidelity SAI International Quality Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity SAI International Quality Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI International Quality Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI International Quality Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity SAI International Quality Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Fidelity SAI International Quality Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity SAI International Quality Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity SAI International Quality Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity SAI International Quality Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity SAI International Quality Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.60%
|
| Fidelity SAI International Quality Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.20%
|
| Fidelity SAI International Quality Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.10%
|
| Fidelity SAI International Quality Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Fidelity SAI International Quality Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.60%
|
| Fidelity SAI International Quality Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI International Quality Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Fidelity SAI International Quality Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| Fidelity SAI International Quality Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Fidelity SAI International Quality Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Fidelity SAI International Quality Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Fidelity SAI International Quality Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.20%
|
| Fidelity SAI International Quality Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Fidelity SAI International Quality Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.10%
|
| Fidelity SAI International Quality Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Fidelity SAI International Quality Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Fidelity SAI International Quality Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Fidelity SAI International Quality Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.70%
|
| Fidelity SAI International Quality Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity SAI International Quality Index Fund | Denmark |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity SAI International Quality Index Fund | Switzerland |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.60%
|
| Fidelity SAI International Quality Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.00%
|
| Fidelity SAI International Quality Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Momentum Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Fidelity SAI International Momentum Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Fidelity SAI International Momentum Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI International Momentum Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI International Momentum Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity SAI International Momentum Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Fidelity SAI International Momentum Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Fidelity SAI International Momentum Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Momentum Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Momentum Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Momentum Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.30%
|
| Fidelity SAI International Momentum Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.30%
|
| Fidelity SAI International Momentum Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| Fidelity SAI International Momentum Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity SAI International Momentum Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.50%
|
| Fidelity SAI International Momentum Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity SAI International Momentum Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity SAI International Momentum Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Fidelity SAI International Momentum Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity SAI International Momentum Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Fidelity SAI International Momentum Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity SAI International Momentum Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.80%
|
| Fidelity SAI International Momentum Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.40%
|
| Fidelity SAI International Momentum Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.60%
|
| Fidelity SAI International Momentum Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity SAI International Momentum Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.80%
|
| Fidelity SAI International Momentum Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.70%
|
| Fidelity SAI International Momentum Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity SAI International Momentum Index Fund | Switzerland |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity SAI International Momentum Index Fund | Spain |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| Fidelity SAI International Momentum Index Fund | Italy |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Fidelity SAI International Momentum Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.70%
|
| Fidelity SAI International Momentum Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI International Low Volatility Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Fidelity SAI International Low Volatility Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Fidelity SAI International Low Volatility Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Low Volatility Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Low Volatility Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Low Volatility Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI International Low Volatility Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI International Low Volatility Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI International Low Volatility Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI International Low Volatility Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI International Low Volatility Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.90%
|
| Fidelity SAI International Low Volatility Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Fidelity SAI International Low Volatility Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| Fidelity SAI International Low Volatility Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Fidelity SAI International Low Volatility Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.30%
|
| Fidelity SAI International Low Volatility Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Fidelity SAI International Low Volatility Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.00%
|
| Fidelity SAI International Low Volatility Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.60%
|
| Fidelity SAI International Low Volatility Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Fidelity SAI International Low Volatility Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Fidelity SAI International Low Volatility Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.70%
|
| Fidelity SAI International Low Volatility Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| Fidelity SAI International Low Volatility Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Fidelity SAI International Low Volatility Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
29.40%
|
| Fidelity SAI International Low Volatility Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Fidelity SAI International Low Volatility Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Fidelity SAI International Low Volatility Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Fidelity SAI International Low Volatility Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.40%
|
| Fidelity SAI International Low Volatility Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Fidelity SAI International Low Volatility Index Fund | Switzerland |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.30%
|
| Fidelity SAI International Low Volatility Index Fund | Hong Kong |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Fidelity SAI International Low Volatility Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.80%
|
| Fidelity SAI International Low Volatility Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI International Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Fidelity SAI International Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity SAI International Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI International Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI International Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI International Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity SAI International Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity SAI International Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity SAI International Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity SAI International Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity SAI International Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.70%
|
| Fidelity SAI International Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| Fidelity SAI International Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.20%
|
| Fidelity SAI International Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI International Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.50%
|
| Fidelity SAI International Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity SAI International Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Fidelity SAI International Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.80%
|
| Fidelity SAI International Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Fidelity SAI International Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Fidelity SAI International Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Fidelity SAI International Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.80%
|
| Fidelity SAI International Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity SAI International Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.60%
|
| Fidelity SAI International Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.00%
|
| Fidelity SAI International Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.90%
|
| Fidelity SAI International Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.40%
|
| Fidelity SAI International Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.90%
|
| Fidelity SAI International Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Fidelity SAI International Index Fund | Switzerland |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity SAI International Index Fund | Spain |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Fidelity SAI International Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.60%
|
| Fidelity SAI International Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI International Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
12.70%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.00%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Value Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Value Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.90%
|
| Fidelity SAI Emerging Markets Value Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity SAI Emerging Markets Value Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Fidelity SAI Emerging Markets Value Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Fidelity SAI Emerging Markets Value Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Fidelity SAI Emerging Markets Value Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| Fidelity SAI Emerging Markets Value Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.70%
|
| Fidelity SAI Emerging Markets Value Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Fidelity SAI Emerging Markets Value Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Fidelity SAI Emerging Markets Value Index Fund | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity SAI Emerging Markets Value Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.20%
|
| Fidelity SAI Emerging Markets Value Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.60%
|
| Fidelity SAI Emerging Markets Value Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.20%
|
| Fidelity SAI Emerging Markets Value Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.70%
|
| Fidelity SAI Emerging Markets Value Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.80%
|
| Fidelity SAI Emerging Markets Value Index Fund | South Africa |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI Emerging Markets Value Index Fund | Saudi Arabia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | Mexico |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI Emerging Markets Value Index Fund | Malaysia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
96.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Value Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.40%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
28.40%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.20%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.00%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.60%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.00%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.20%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Saudi Arabia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Malaysia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | United Arab Emirates |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Kuwait |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | Thailand |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.30%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Fidelity SAI Emerging Markets Low Volatility Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.50%
|
| Fidelity SAI Emerging Markets Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity SAI Emerging Markets Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity SAI Emerging Markets Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| Fidelity SAI Emerging Markets Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity SAI Emerging Markets Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity SAI Emerging Markets Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity SAI Emerging Markets Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity SAI Emerging Markets Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity SAI Emerging Markets Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity SAI Emerging Markets Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Fidelity SAI Emerging Markets Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
36.90%
|
| Fidelity SAI Emerging Markets Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Fidelity SAI Emerging Markets Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity SAI Emerging Markets Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity SAI Emerging Markets Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity SAI Emerging Markets Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.40%
|
| Fidelity SAI Emerging Markets Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity SAI Emerging Markets Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity SAI Emerging Markets Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Fidelity SAI Emerging Markets Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Index Fund | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.50%
|
| Fidelity SAI Emerging Markets Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.00%
|
| Fidelity SAI Emerging Markets Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.70%
|
| Fidelity SAI Emerging Markets Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.70%
|
| Fidelity SAI Emerging Markets Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.80%
|
| Fidelity SAI Emerging Markets Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.80%
|
| Fidelity SAI Emerging Markets Index Fund | South Africa |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity SAI Emerging Markets Index Fund | Saudi Arabia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Fidelity SAI Emerging Markets Index Fund | Mexico |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Index Fund | United Arab Emirates |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity SAI Emerging Markets Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.50%
|
| Fidelity SAI Emerging Markets Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Fidelity SAI Emerging Markets Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity International Sustainability Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.10%
|
| Fidelity International Sustainability Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity International Sustainability Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Fidelity International Sustainability Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity International Sustainability Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity International Sustainability Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.60%
|
| Fidelity International Sustainability Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity International Sustainability Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity International Sustainability Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity International Sustainability Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity International Sustainability Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.90%
|
| Fidelity International Sustainability Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.90%
|
| Fidelity International Sustainability Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.80%
|
| Fidelity International Sustainability Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity International Sustainability Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.60%
|
| Fidelity International Sustainability Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Fidelity International Sustainability Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Fidelity International Sustainability Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity International Sustainability Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| Fidelity International Sustainability Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Fidelity International Sustainability Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Fidelity International Sustainability Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.50%
|
| Fidelity International Sustainability Index Fund | Netherlands |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.20%
|
| Fidelity International Sustainability Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.80%
|
| Fidelity International Sustainability Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| Fidelity International Sustainability Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Fidelity International Sustainability Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Fidelity International Sustainability Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity International Sustainability Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
29.80%
|
| Fidelity International Sustainability Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| Fidelity International Sustainability Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Fidelity International Sustainability Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.20%
|
| Fidelity International Sustainability Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity International Sustainability Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.10%
|
| Fidelity Global ex U.S. Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity Global ex U.S. Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity Global ex U.S. Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity Global ex U.S. Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Global ex U.S. Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity Global ex U.S. Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Global ex U.S. Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Global ex U.S. Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Global ex U.S. Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Global ex U.S. Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Global ex U.S. Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.00%
|
| Fidelity Global ex U.S. Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.50%
|
| Fidelity Global ex U.S. Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.80%
|
| Fidelity Global ex U.S. Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity Global ex U.S. Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Fidelity Global ex U.S. Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Global ex U.S. Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Fidelity Global ex U.S. Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity Global ex U.S. Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Fidelity Global ex U.S. Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.10%
|
| Fidelity Global ex U.S. Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Fidelity Global ex U.S. Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Fidelity Global ex U.S. Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Fidelity Global ex U.S. Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Fidelity Global ex U.S. Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Fidelity Global ex U.S. Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity Global ex U.S. Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Global ex U.S. Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity Global ex U.S. Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Fidelity Global ex U.S. Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
33.00%
|
| Fidelity Global ex U.S. Index Fund | France |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Global ex U.S. Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.80%
|
| Fidelity Global ex U.S. Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity Global ex U.S. Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.50%
|
| Fidelity Flex International Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.40%
|
| Fidelity Flex International Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity Flex International Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Flex International Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity Flex International Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity Flex International Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Flex International Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Flex International Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Flex International Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Flex International Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Fidelity Flex International Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.90%
|
| Fidelity Flex International Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.30%
|
| Fidelity Flex International Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity Flex International Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Flex International Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.10%
|
| Fidelity Flex International Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Fidelity Flex International Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Fidelity Flex International Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Fidelity Flex International Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity Flex International Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Flex International Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| Fidelity Flex International Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Flex International Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.00%
|
| Fidelity Flex International Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.30%
|
| Fidelity Flex International Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| Fidelity Flex International Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.20%
|
| Fidelity Flex International Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Fidelity Flex International Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.30%
|
| Fidelity Flex International Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Flex International Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Fidelity Flex International Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.80%
|
| Fidelity Flex International Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.20%
|
| Fidelity Flex International Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Flex International Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.40%
|
| Fidelity Emerging Markets Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.40%
|
| Fidelity Emerging Markets Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Fidelity Emerging Markets Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity Emerging Markets Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| Fidelity Emerging Markets Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Fidelity Emerging Markets Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity Emerging Markets Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity Emerging Markets Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.00%
|
| Fidelity Emerging Markets Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Emerging Markets Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Emerging Markets Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.10%
|
| Fidelity Emerging Markets Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
36.70%
|
| Fidelity Emerging Markets Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity Emerging Markets Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Emerging Markets Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.60%
|
| Fidelity Emerging Markets Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.40%
|
| Fidelity Emerging Markets Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.20%
|
| Fidelity Emerging Markets Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.00%
|
| Fidelity Emerging Markets Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.60%
|
| Fidelity Emerging Markets Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Fidelity Emerging Markets Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity Emerging Markets Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Emerging Markets Index Fund | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.50%
|
| Fidelity Emerging Markets Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
24.90%
|
| Fidelity Emerging Markets Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.50%
|
| Fidelity Emerging Markets Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
18.60%
|
| Fidelity Emerging Markets Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.20%
|
| Fidelity Emerging Markets Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.70%
|
| Fidelity Emerging Markets Index Fund | South Africa |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Fidelity Emerging Markets Index Fund | Saudi Arabia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Fidelity Emerging Markets Index Fund | Mexico |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity Emerging Markets Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.90%
|
| Fidelity Emerging Markets Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.20%
|
| Fidelity Emerging Markets Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Flex International Focused Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity Flex International Focused Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity Flex International Focused Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity Flex International Focused Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity Flex International Focused Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.90%
|
| Fidelity Flex International Focused Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Flex International Focused Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.80%
|
| Fidelity Flex International Focused Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Fidelity Flex International Focused Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Fidelity Flex International Focused Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Fidelity Flex International Focused Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
23.70%
|
| Fidelity Flex International Focused Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Fidelity Flex International Focused Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity Flex International Focused Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity Flex International Focused Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.70%
|
| Fidelity Flex International Focused Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Fidelity Flex International Focused Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity Flex International Focused Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity Flex International Focused Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Fidelity Flex International Focused Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Fidelity Flex International Focused Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Fidelity Flex International Focused Index Fund | United States |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.20%
|
| Fidelity Flex International Focused Index Fund | Japan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.50%
|
| Fidelity Flex International Focused Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Fidelity Flex International Focused Index Fund | Canada |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.80%
|
| Fidelity Flex International Focused Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Fidelity Flex International Focused Index Fund | United Kingdom |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.10%
|
| Fidelity Flex International Focused Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Fidelity Flex International Focused Index Fund | Germany |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity Flex International Focused Index Fund | Australia |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.50%
|
| Fidelity Flex International Focused Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.40%
|
| Fidelity Flex International Focused Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
94.10%
|
| Fidelity Flex International Focused Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.60%
|
| Fidelity Flex International Focused Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH0Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH1Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.00%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH2Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH3Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH4Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH5Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH6Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH7Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH8Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | TH9Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | MSFinancialsSectorMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.30%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Information Technology Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
38.90%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Healthcare Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.90%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Real Estate Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Industrial Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Materials Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.20%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Consumer Discretionary Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Consumer Staples Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Communications Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Energy Sector |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Utilities Sector Member |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.30%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Brazil |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Taiwan |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
26.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | China |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
19.40%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Korea, Republic of |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.80%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | OtherMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.40%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | India |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | South Africa |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.50%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | United Arab Emirates |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Greece |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | Poland |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | AACommonStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
97.20%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.60%
|
| Fidelity SAI Emerging Markets Momentum Index Fund | AAPreferredStocksMember |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|