| Form N-CSR Cover | 6 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Fidelity Covington Trust |
| Entity Central Index Key | 0000945908 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 6 Months Ended |
| Dec. 31, 2024 USD ($) shares | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Fidelity Covington Trust |
| Entity Central Index Key | 0000945908 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Fidelity Enhanced Large Cap Core ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Large Cap Core ETF |
| Class Name | Fidelity® Enhanced Large Cap Core ETF |
| Trading Symbol | FELC |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Large Cap Core ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Large Cap Core ETF $ 0.18 % |
| Expenses Paid, Amount | $ 10 |
| Expense Ratio, Percent | 0.18% |
| Net Assets | $ 4,261,062,790 |
| Holdings Count | shares | 211 |
| Investment Company Portfolio Turnover | 55% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 211 Portfolio Turnover 55 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 32.6 Financials 14.2 Consumer Discretionary 12.4 Communication Services 10.8 Industrials 10.0 Health Care 9.2 Consumer Staples 3.5 Energy 2.8 Materials 1.6 Real Estate 1.0 Utilities 0.9 Common Stocks 99.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.0 Short-Term Investments and Net Other Assets (Liabilities) - 1.0 United States 99.9 Mexico 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 99.9 Mexico - 0.1 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Apple Inc 8.1 NVIDIA Corp 7.1 Microsoft Corp 5.8 Amazon.com Inc 4.5 Meta Platforms Inc Class A 3.0 Alphabet Inc Class A 2.2 Berkshire Hathaway Inc Class B 2.2 Broadcom Inc 2.0 JPMorgan Chase & Co 1.9 Alphabet Inc Class C 1.9 38.7 |
| Fidelity Enhanced Small Cap ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Small Cap ETF |
| Class Name | Fidelity® Enhanced Small Cap ETF |
| Trading Symbol | FESM |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Small Cap ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Small Cap ETF $ 0.28 % |
| Expenses Paid, Amount | $ 15 |
| Expense Ratio, Percent | 0.28% |
| Net Assets | $ 1,166,157,388 |
| Holdings Count | shares | 639 |
| Investment Company Portfolio Turnover | 61% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 639 Portfolio Turnover 61 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Financials 17.8 Industrials 17.4 Health Care 15.6 Information Technology 15.5 Consumer Discretionary 10.3 Energy 5.3 Materials 4.8 Real Estate 4.4 Consumer Staples 3.5 Communication Services 2.9 Utilities 0.8 Common Stocks 98.3 Short-Term Investments and Net Other Assets (Liabilities) 1.7 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 98.3 Short-Term Investments and Net Other Assets (Liabilities) - 1.7 United States 98.2 Thailand 0.6 Canada 0.3 Ireland 0.3 Puerto Rico 0.3 Monaco 0.1 Norway 0.1 Bermuda 0.1 Panama 0.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 98.2 Thailand - 0.6 Canada - 0.3 Ireland - 0.3 Puerto Rico - 0.3 Monaco - 0.1 Norway - 0.1 Bermuda - 0.1 Panama - 0.0 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Abercrombie & Fitch Co Class A 0.9 Q2 Holdings Inc 0.9 Sprouts Farmers Market Inc 0.8 Carpenter Technology Corp 0.7 SkyWest Inc 0.7 Primo Brands Corp Class A 0.7 EnerSys 0.7 Payoneer Global Inc 0.7 Fabrinet 0.6 AvidXchange Holdings Inc 0.6 7.3 |
| Fidelity Metaverse ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Metaverse ETF |
| Class Name | Fidelity® Metaverse ETF |
| Trading Symbol | FMET |
| Security Exchange Name | NASDAQ |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Metaverse ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Metaverse ETF $ 0.38 % |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 31,268,552 |
| Holdings Count | shares | 52 |
| Investment Company Portfolio Turnover | 34% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 52 Portfolio Turnover 34 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 53.3 Communication Services 37.6 Real Estate 8.2 Industrials 0.7 Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.8 Short-Term Investments and Net Other Assets (Liabilities) - 0.2 United States 75.2 Korea (South) 10.8 China 6.9 France 3.1 Japan 1.4 Sweden 1.0 Taiwan 0.8 United Kingdom 0.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 75.2 Korea (South) - 10.8 China - 6.9 France - 3.1 Japan - 1.4 Sweden - 1.0 Taiwan - 0.8 United Kingdom - 0.8 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Alphabet Inc Class A 5.2 Apple Inc 4.9 Meta Platforms Inc Class A 4.5 QUALCOMM Inc 4.5 Microsoft Corp 4.5 Samsung Electronics Co Ltd 4.5 NVIDIA Corp 4.4 Equinix Inc 4.3 Advanced Micro Devices Inc 4.0 Adobe Inc 3.9 44.7 |
| Fidelity Crypto Industry and Digital Payments ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Crypto Industry and Digital Payments ETF |
| Class Name | Fidelity® Crypto Industry and Digital Payments ETF |
| Trading Symbol | FDIG |
| Security Exchange Name | NASDAQ |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Crypto Industry and Digital Payments ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Crypto Industry and Digital Payments ETF $ 0.38 % |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 165,547,765 |
| Holdings Count | shares | 49 |
| Investment Company Portfolio Turnover | 119% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 49 Portfolio Turnover 119 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Financials 52.6 Information Technology 43.8 Communication Services 1.9 Industrials 1.3 Common Stocks 99.6 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.6 Short-Term Investments and Net Other Assets (Liabilities) - 0.4 United States 69.7 Canada 7.2 Japan 6.8 Australia 3.1 Brazil 2.9 Netherlands 1.7 Germany 1.6 China 1.4 France 1.4 Others 4.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 69.7 Canada - 7.2 Japan - 6.8 Australia - 3.1 Brazil - 2.9 Netherlands - 1.7 Germany - 1.6 China - 1.4 France - 1.4 Others - 4.2 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Coinbase Global Inc Class A 11.6 MARA Holdings Inc 6.2 Riot Platforms Inc 3.9 Block Inc Class A 3.8 Cleanspark Inc 3.7 Core Scientific Inc 3.5 Bitdeer Technologies Group Class A 3.2 IREN Ltd 3.1 Terawulf Inc 2.9 Hut 8 Corp (United States) 2.8 44.7 |
| Fidelity Enhanced U.S. All-Cap Equity ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced U.S. All-Cap Equity ETF |
| Class Name | Fidelity® Enhanced U.S. All-Cap Equity ETF |
| Trading Symbol | FEAC |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced U.S. All-Cap Equity ETF for the period November 19, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced U.S. All-Cap Equity ETF A $ 0.18 % A Expenses for the full reporting period would be higher. |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.18% |
| Expenses Short Period Footnote [Text Block] | Expenses for the full reporting period would be higher. |
| Net Assets | $ 4,348,930 |
| Holdings Count | shares | 360 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 360 Portfolio Turnover A 16 % A Amount not annualized |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 31.4 Financials 15.5 Communication Services 10.8 Consumer Discretionary 10.3 Health Care 10.1 Industrials 9.9 Energy 3.6 Consumer Staples 3.6 Real Estate 1.9 Materials 1.8 Utilities 0.2 Common Stocks 99.1 Short-Term Investments and Net Other Assets (Liabilities) 0.9 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.1 Short-Term Investments and Net Other Assets (Liabilities) - 0.9 United States 99.7 United Kingdom 0.1 Monaco 0.1 Thailand 0.1 Canada 0.0 Hong Kong 0.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 99.7 United Kingdom - 0.1 Monaco - 0.1 Thailand - 0.1 Canada - 0.0 Hong Kong - 0.0 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Apple Inc 7.0 NVIDIA Corp 6.2 Microsoft Corp 4.8 Amazon.com Inc 2.9 Meta Platforms Inc Class A 2.9 Broadcom Inc 2.5 Alphabet Inc Class A 2.0 Exxon Mobil Corp 1.5 Mastercard Inc Class A 1.4 Walmart Inc 1.4 32.6 |
| Fidelity Enhanced Emerging Markets ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Emerging Markets ETF |
| Class Name | Fidelity® Enhanced Emerging Markets ETF |
| Trading Symbol | FEMR |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Emerging Markets ETF for the period November 19, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Emerging Markets ETF A $ 0.38 % A Expenses for the full reporting period would be higher. |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.38% |
| Expenses Short Period Footnote [Text Block] | Expenses for the full reporting period would be higher. |
| Net Assets | $ 9,847,801 |
| Holdings Count | shares | 172 |
| Investment Company Portfolio Turnover | 0% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 172 Portfolio Turnover B 0 % A A Amount represents less than 1% B Amount not annualized |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 27.7 Financials 22.3 Consumer Discretionary 15.8 Industrials 7.6 Communication Services 7.5 Consumer Staples 5.5 Health Care 5.4 Materials 3.1 Real Estate 2.4 Energy 2.2 Utilities 0.2 Common Stocks 99.6 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 0.3 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.6 Preferred Stocks - 0.1 Short-Term Investments and Net Other Assets (Liabilities) - 0.3 China 29.3 Taiwan 21.1 India 16.1 Korea (South) 10.3 Brazil 3.8 Saudi Arabia 2.7 South Africa 2.4 United Arab Emirates 2.4 Mexico 2.2 Others 9.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) China - 29.3 Taiwan - 21.1 India - 16.1 Korea (South) - 10.3 Brazil - 3.8 Saudi Arabia - 2.7 South Africa - 2.4 United Arab Emirates - 2.4 Mexico - 2.2 Others - 9.7 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Taiwan Semiconductor Manufacturing Co Ltd 11.3 Tencent Holdings Ltd 5.2 ICICI Bank Ltd ADR 2.6 Infosys Ltd ADR 2.5 HDFC Bank Ltd/Gandhinagar ADR 2.4 Samsung Electronics Co Ltd 2.1 Meituan B Shares 1.9 MediaTek Inc 1.8 Wipro Ltd ADR 1.7 State Bank of India GDR 1.7 33.2 |
| Fidelity Enhanced Mid Cap ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Mid Cap ETF |
| Class Name | Fidelity® Enhanced Mid Cap ETF |
| Trading Symbol | FMDE |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Mid Cap ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Mid Cap ETF $ 0.23 % |
| Expenses Paid, Amount | $ 12 |
| Expense Ratio, Percent | 0.23% |
| Net Assets | $ 2,128,597,717 |
| Holdings Count | shares | 328 |
| Investment Company Portfolio Turnover | 48% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 328 Portfolio Turnover 48 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Financials 18.3 Industrials 17.6 Information Technology 15.0 Consumer Discretionary 12.4 Health Care 8.3 Real Estate 6.5 Materials 5.5 Energy 4.4 Utilities 4.3 Consumer Staples 3.7 Communication Services 2.7 Common Stocks 98.7 Short-Term Investments and Net Other Assets (Liabilities) 1.3 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 98.7 Short-Term Investments and Net Other Assets (Liabilities) - 1.3 United States 99.5 Korea (South) 0.4 United Kingdom 0.1 Canada 0.0 Brazil 0.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 99.5 Korea (South) - 0.4 United Kingdom - 0.1 Canada - 0.0 Brazil - 0.0 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Williams Cos Inc/The 1.2 Bank of New York Mellon Corp/The 1.0 Allstate Corp/The 0.9 Simon Property Group Inc 0.9 Cummins Inc 0.9 Block Inc Class A 0.9 Howmet Aerospace Inc 0.9 MSCI Inc 0.9 AMETEK Inc 0.8 Vistra Corp 0.8 9.2 |
| Fidelity Enhanced International ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced International ETF |
| Class Name | Fidelity® Enhanced International ETF |
| Trading Symbol | FENI |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced International ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced International ETF $ 0.28 % |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.28% |
| Net Assets | $ 1,733,493,169 |
| Holdings Count | shares | 291 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 291 Portfolio Turnover 87 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Financials 22.7 Industrials 19.3 Health Care 12.5 Information Technology 10.8 Consumer Discretionary 10.0 Materials 7.5 Consumer Staples 6.5 Utilities 3.1 Communication Services 3.1 Energy 1.5 Real Estate 1.3 Common Stocks 97.8 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 1.7 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 97.8 Preferred Stocks - 0.5 Short-Term Investments and Net Other Assets (Liabilities) - 1.7 Japan 23.9 United States 12.2 United Kingdom 11.2 Germany 9.1 France 7.2 Australia 6.1 Switzerland 4.2 Spain 4.1 Netherlands 4.1 Others 17.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) Japan - 23.9 United States - 12.2 United Kingdom - 11.2 Germany - 9.1 France - 7.2 Australia - 6.1 Switzerland - 4.2 Spain - 4.1 Netherlands - 4.1 Others - 17.9 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) SAP SE 2.1 Novo Nordisk A/S Series B 1.5 Novartis AG 1.5 Roche Holding AG 1.5 Siemens AG 1.4 Sony Group Corp 1.3 Schneider Electric SE 1.3 ASML Holding NV 1.3 HSBC Holdings PLC 1.2 Recruit Holdings Co Ltd 1.1 14.2 |
| Fidelity Clean Energy ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Clean Energy ETF |
| Class Name | Fidelity® Clean Energy ETF |
| Trading Symbol | FRNW |
| Security Exchange Name | CboeBZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Clean Energy ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Clean Energy ETF $ 0.38 % |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 24,294,307 |
| Holdings Count | shares | 51 |
| Investment Company Portfolio Turnover | 51% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 51 Portfolio Turnover 51 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Utilities 48.1 Industrials 31.2 Information Technology 20.5 Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.8 Short-Term Investments and Net Other Assets (Liabilities) - 0.2 United States 35.6 China 9.9 Canada 9.1 Denmark 7.2 Spain 5.7 Germany 4.7 New Zealand 4.5 France 4.4 Israel 3.7 Others 15.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 35.6 China - 9.9 Canada - 9.1 Denmark - 7.2 Spain - 5.7 Germany - 4.7 New Zealand - 4.5 France - 4.4 Israel - 3.7 Others - 15.2 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) GE Vernova Inc 4.6 First Solar Inc 4.3 Vestas Wind Systems A/S 4.1 Enphase Energy Inc 3.5 EDP SA 3.4 Orsted AS 3.1 NEXTracker Inc Class A 2.9 Verbund AG Class A 2.9 Itron Inc 2.7 Meridian Energy Ltd 2.6 34.1 |
| Fidelity Cloud Computing ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Cloud Computing ETF |
| Class Name | Fidelity® Cloud Computing ETF |
| Trading Symbol | FCLD |
| Security Exchange Name | CboeBZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Cloud Computing ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Cloud Computing ETF $ 0.38 % |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 85,108,801 |
| Holdings Count | shares | 53 |
| Investment Company Portfolio Turnover | 38% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 53 Portfolio Turnover 38 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 88.2 Real Estate 7.6 Consumer Discretionary 2.2 Industrials 1.8 Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.8 Short-Term Investments and Net Other Assets (Liabilities) - 0.2 United States 93.3 Israel 2.8 Taiwan 2.0 China 1.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 93.3 Israel - 2.8 Taiwan - 2.0 China - 1.9 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Microsoft Corp 4.8 Servicenow Inc 4.6 Salesforce Inc 4.5 Oracle Corp 4.4 Equinix Inc 4.2 Workday Inc Class A 3.5 Digital Realty Trust Inc 3.4 Snowflake Inc Class A 3.1 Datadog Inc Class A 3.0 MicroStrategy Inc Class A 2.9 38.4 |
| Fidelity Digital Health ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Digital Health ETF |
| Class Name | Fidelity® Digital Health ETF |
| Trading Symbol | FDHT |
| Security Exchange Name | CboeBZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Digital Health ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Digital Health ETF $ 0.38 % |
| Expenses Paid, Amount | $ 20 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 7,836,071 |
| Holdings Count | shares | 51 |
| Investment Company Portfolio Turnover | 59% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 51 Portfolio Turnover 59 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Health Care 86.4 Consumer Staples 6.5 Information Technology 5.1 Industrials 2.0 Common Stocks 100.0 Short-Term Investments and Net Other Assets (Liabilities) 0.0 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 100.0 Short-Term Investments and Net Other Assets (Liabilities) - 0.0 United States 60.6 Australia 6.8 Netherlands 5.6 China 5.0 Germany 4.8 Switzerland 4.4 New Zealand 3.4 Japan 2.6 Denmark 1.9 Others 4.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 60.6 Australia - 6.8 Netherlands - 5.6 China - 5.0 Germany - 4.8 Switzerland - 4.4 New Zealand - 3.4 Japan - 2.6 Denmark - 1.9 Others - 4.9 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Dexcom Inc 4.7 ResMed Inc 4.5 Intuitive Surgical Inc 4.5 Veeva Systems Inc Class A 4.4 Koninklijke Philips NV 4.1 Insulet Corp 3.9 Sonova Holding AG 3.7 Siemens Healthineers AG 3.6 Fisher & Paykel Healthcare Corp Ltd 3.4 Cochlear Ltd 3.2 40.0 |
| Fidelity Electric Vehicles and Future Transportation ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Electric Vehicles and Future Transportation ETF |
| Class Name | Fidelity® Electric Vehicles and Future Transportation ETF |
| Trading Symbol | FDRV |
| Security Exchange Name | CboeBZX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Electric Vehicles and Future Transportation ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Electric Vehicles and Future Transportation ETF $ 0.38 % |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.38% |
| Net Assets | $ 28,162,666 |
| Holdings Count | shares | 51 |
| Investment Company Portfolio Turnover | 78% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 51 Portfolio Turnover 78 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Consumer Discretionary 57.0 Information Technology 23.3 Industrials 16.4 Materials 3.2 Common Stocks 99.9 Short-Term Investments and Net Other Assets (Liabilities) 0.1 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.9 Short-Term Investments and Net Other Assets (Liabilities) - 0.1 United States 40.5 China 29.7 Japan 6.6 Bailiwick Of Jersey 4.8 Germany 4.3 Korea (South) 3.1 France 2.7 Israel 2.2 Belgium 1.6 Others 4.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 40.5 China - 29.7 Japan - 6.6 Bailiwick Of Jersey - 4.8 Germany - 4.3 Korea (South) - 3.1 France - 2.7 Israel - 2.2 Belgium - 1.6 Others - 4.5 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Tesla Inc 4.9 Li Auto Inc A Shares 4.9 Aptiv PLC 4.8 BYD Co Ltd H Shares 4.7 Rivian Automotive Inc Class A 4.5 NXP Semiconductors NV 4.3 Infineon Technologies AG 4.3 Uber Technologies Inc 4.2 NIO Inc A Shares 3.8 XPeng Inc A Shares 3.8 44.2 |
| Fidelity Enhanced Large Cap Growth ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Large Cap Growth ETF |
| Class Name | Fidelity® Enhanced Large Cap Growth ETF |
| Trading Symbol | FELG |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Large Cap Growth ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Large Cap Growth ETF $ 0.18 % |
| Expenses Paid, Amount | $ 10 |
| Expense Ratio, Percent | 0.18% |
| Net Assets | $ 3,180,775,368 |
| Holdings Count | shares | 96 |
| Investment Company Portfolio Turnover | 31% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 96 Portfolio Turnover 31 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Information Technology 46.9 Consumer Discretionary 17.6 Communication Services 14.0 Health Care 6.6 Industrials 6.1 Financials 5.8 Consumer Staples 1.4 Energy 0.5 Materials 0.1 Real Estate 0.1 Utilities 0.0 Common Stocks 99.1 Short-Term Investments and Net Other Assets (Liabilities) 0.9 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 99.1 Short-Term Investments and Net Other Assets (Liabilities) - 0.9 United States 99.6 Brazil 0.3 Mexico 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 99.6 Brazil - 0.3 Mexico - 0.1 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Apple Inc 12.7 NVIDIA Corp 11.2 Microsoft Corp 10.0 Amazon.com Inc 7.3 Meta Platforms Inc Class A 4.8 Tesla Inc 4.3 Alphabet Inc Class A 3.7 Broadcom Inc 3.6 Alphabet Inc Class C 2.7 Mastercard Inc Class A 2.0 62.3 |
| Fidelity Enhanced Large Cap Value ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Enhanced Large Cap Value ETF |
| Class Name | Fidelity® Enhanced Large Cap Value ETF |
| Trading Symbol | FELV |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains information about Fidelity® Enhanced Large Cap Value ETF for the period July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-FIDELITY |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last six months? (based on hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Enhanced Large Cap Value ETF $ 0.18 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.18% |
| Net Assets | $ 2,133,528,408 |
| Holdings Count | shares | 383 |
| Investment Company Portfolio Turnover | 46% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of December 31, 2024) KEY FACTS Fund Size $ Number of Holdings 383 Portfolio Turnover 46 % |
| Holdings [Text Block] | MARKET SECTORS (% of Fund's net assets) Financials 22.9 Industrials 16.4 Health Care 13.0 Information Technology 9.8 Consumer Discretionary 6.9 Consumer Staples 6.9 Energy 6.0 Communication Services 4.7 Materials 4.3 Real Estate 3.9 Utilities 3.8 Common Stocks 98.6 Short-Term Investments and Net Other Assets (Liabilities) 1.4 ASSET ALLOCATION (% of Fund's net assets) Common Stocks - 98.6 Short-Term Investments and Net Other Assets (Liabilities) - 1.4 United States 99.3 Ireland 0.4 United Kingdom 0.2 Finland 0.1 Mexico 0.0 Canada 0.0 Bailiwick Of Jersey 0.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets) United States - 99.3 Ireland - 0.4 United Kingdom - 0.2 Finland - 0.1 Mexico - 0.0 Canada - 0.0 Bailiwick Of Jersey - 0.0 |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) Berkshire Hathaway Inc Class B 3.8 JPMorgan Chase & Co 2.9 Exxon Mobil Corp 2.3 Walmart Inc 2.1 Bank of America Corp 1.6 Walt Disney Co/The 1.3 UnitedHealth Group Inc 1.3 Procter & Gamble Co/The 1.3 Wells Fargo & Co 1.2 Cisco Systems Inc 1.2 19.0 |
| Shareholder Report, Holdings (Details) | Dec. 31, 2024 |
| Fidelity Enhanced Large Cap Core ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Fidelity Enhanced Large Cap Core ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| Fidelity Enhanced Large Cap Core ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| Fidelity Enhanced Large Cap Core ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Enhanced Large Cap Core ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Enhanced Large Cap Core ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Enhanced Large Cap Core ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Enhanced Large Cap Core ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Enhanced Large Cap Core ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Enhanced Large Cap Core ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Enhanced Large Cap Core ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.20% |
| Fidelity Enhanced Large Cap Core ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 32.60% |
| Fidelity Enhanced Large Cap Core ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.20% |
| Fidelity Enhanced Large Cap Core ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Fidelity Enhanced Large Cap Core ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| Fidelity Enhanced Large Cap Core ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Enhanced Large Cap Core ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| Fidelity Enhanced Large Cap Core ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Enhanced Large Cap Core ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| Fidelity Enhanced Large Cap Core ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Enhanced Large Cap Core ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Large Cap Core ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| Fidelity Enhanced Large Cap Core ETF | Mexico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Core ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| Fidelity Enhanced Large Cap Core ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Fidelity Enhanced Small Cap ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Small Cap ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Small Cap ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Enhanced Small Cap ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Enhanced Small Cap ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Enhanced Small Cap ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Enhanced Small Cap ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Enhanced Small Cap ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Enhanced Small Cap ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Fidelity Enhanced Small Cap ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Fidelity Enhanced Small Cap ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.80% |
| Fidelity Enhanced Small Cap ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| Fidelity Enhanced Small Cap ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.60% |
| Fidelity Enhanced Small Cap ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Enhanced Small Cap ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| Fidelity Enhanced Small Cap ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Enhanced Small Cap ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| Fidelity Enhanced Small Cap ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Enhanced Small Cap ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Enhanced Small Cap ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| Fidelity Enhanced Small Cap ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Enhanced Small Cap ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| Fidelity Enhanced Small Cap ETF | Thailand | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Fidelity Enhanced Small Cap ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Enhanced Small Cap ETF | Ireland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Enhanced Small Cap ETF | Puerto Rico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Enhanced Small Cap ETF | Monaco | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Small Cap ETF | Norway | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Small Cap ETF | Bermuda | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Small Cap ETF | Panama | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Small Cap ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.30% |
| Fidelity Enhanced Small Cap ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Metaverse ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| Fidelity Metaverse ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Metaverse ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Metaverse ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Metaverse ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Metaverse ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Metaverse ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Metaverse ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Metaverse ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| Fidelity Metaverse ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Fidelity Metaverse ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.30% |
| Fidelity Metaverse ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| Fidelity Metaverse ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Metaverse ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.60% |
| Fidelity Metaverse ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 75.20% |
| Fidelity Metaverse ETF | Korea, Republic of | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| Fidelity Metaverse ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| Fidelity Metaverse ETF | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Metaverse ETF | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Metaverse ETF | Sweden | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Fidelity Metaverse ETF | Taiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Metaverse ETF | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Metaverse ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.80% |
| Fidelity Metaverse ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Crypto Industry and Digital Payments ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.60% |
| Fidelity Crypto Industry and Digital Payments ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| Fidelity Crypto Industry and Digital Payments ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Fidelity Crypto Industry and Digital Payments ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Crypto Industry and Digital Payments ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Crypto Industry and Digital Payments ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Crypto Industry and Digital Payments ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Crypto Industry and Digital Payments ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Crypto Industry and Digital Payments ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Crypto Industry and Digital Payments ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Crypto Industry and Digital Payments ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 52.60% |
| Fidelity Crypto Industry and Digital Payments ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.80% |
| Fidelity Crypto Industry and Digital Payments ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Crypto Industry and Digital Payments ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Crypto Industry and Digital Payments ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 69.70% |
| Fidelity Crypto Industry and Digital Payments ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| Fidelity Crypto Industry and Digital Payments ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Crypto Industry and Digital Payments ETF | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Crypto Industry and Digital Payments ETF | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Fidelity Crypto Industry and Digital Payments ETF | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Crypto Industry and Digital Payments ETF | Brazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Crypto Industry and Digital Payments ETF | Netherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Crypto Industry and Digital Payments ETF | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Crypto Industry and Digital Payments ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Crypto Industry and Digital Payments ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.60% |
| Fidelity Crypto Industry and Digital Payments ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.50% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.40% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.70% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Thailand | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Monaco | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | Hong Kong | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| Fidelity Enhanced U.S. All-Cap Equity ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Emerging Markets ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Fidelity Enhanced Emerging Markets ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| Fidelity Enhanced Emerging Markets ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Enhanced Emerging Markets ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Fidelity Enhanced Emerging Markets ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Enhanced Emerging Markets ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Fidelity Enhanced Emerging Markets ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Enhanced Emerging Markets ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Enhanced Emerging Markets ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Enhanced Emerging Markets ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Enhanced Emerging Markets ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.30% |
| Fidelity Enhanced Emerging Markets ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.70% |
| Fidelity Enhanced Emerging Markets ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Fidelity Enhanced Emerging Markets ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Enhanced Emerging Markets ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| Fidelity Enhanced Emerging Markets ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Enhanced Emerging Markets ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| Fidelity Enhanced Emerging Markets ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| Fidelity Enhanced Emerging Markets ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| Fidelity Enhanced Emerging Markets ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Enhanced Emerging Markets ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Enhanced Emerging Markets ETF | Mexico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Enhanced Emerging Markets ETF | Korea, Republic of | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| Fidelity Enhanced Emerging Markets ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 29.30% |
| Fidelity Enhanced Emerging Markets ETF | Taiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.10% |
| Fidelity Enhanced Emerging Markets ETF | Brazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Enhanced Emerging Markets ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| Fidelity Enhanced Emerging Markets ETF | India | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| Fidelity Enhanced Emerging Markets ETF | Saudi Arabia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Fidelity Enhanced Emerging Markets ETF | South Africa | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Enhanced Emerging Markets ETF | United Arab Emirates | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Enhanced Emerging Markets ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.60% |
| Fidelity Enhanced Emerging Markets ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Enhanced Emerging Markets ETF | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Mid Cap ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Fidelity Enhanced Mid Cap ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Fidelity Enhanced Mid Cap ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Mid Cap ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Enhanced Mid Cap ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Enhanced Mid Cap ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.30% |
| Fidelity Enhanced Mid Cap ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15% |
| Fidelity Enhanced Mid Cap ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| Fidelity Enhanced Mid Cap ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| Fidelity Enhanced Mid Cap ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.60% |
| Fidelity Enhanced Mid Cap ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| Fidelity Enhanced Mid Cap ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| Fidelity Enhanced Mid Cap ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Enhanced Mid Cap ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Fidelity Enhanced Mid Cap ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Enhanced Mid Cap ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Enhanced Mid Cap ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| Fidelity Enhanced Mid Cap ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Mid Cap ETF | Korea, Republic of | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Fidelity Enhanced Mid Cap ETF | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Mid Cap ETF | Brazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Mid Cap ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.70% |
| Fidelity Enhanced Mid Cap ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced International ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Fidelity Enhanced International ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Enhanced International ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Enhanced International ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Enhanced International ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Enhanced International ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced International ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced International ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced International ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Fidelity Enhanced International ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Fidelity Enhanced International ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| Fidelity Enhanced International ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| Fidelity Enhanced International ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| Fidelity Enhanced International ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced International ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.30% |
| Fidelity Enhanced International ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| Fidelity Enhanced International ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| Fidelity Enhanced International ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| Fidelity Enhanced International ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Enhanced International ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Enhanced International ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Enhanced International ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.20% |
| Fidelity Enhanced International ETF | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| Fidelity Enhanced International ETF | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.90% |
| Fidelity Enhanced International ETF | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| Fidelity Enhanced International ETF | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Fidelity Enhanced International ETF | Netherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Enhanced International ETF | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| Fidelity Enhanced International ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| Fidelity Enhanced International ETF | Switzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Enhanced International ETF | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Enhanced International ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 97.80% |
| Fidelity Enhanced International ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Enhanced International ETF | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Fidelity Clean Energy ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Fidelity Clean Energy ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Clean Energy ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Clean Energy ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Clean Energy ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Clean Energy ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Clean Energy ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Clean Energy ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Clean Energy ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Fidelity Clean Energy ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Clean Energy ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Fidelity Clean Energy ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.20% |
| Fidelity Clean Energy ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.10% |
| Fidelity Clean Energy ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.60% |
| Fidelity Clean Energy ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| Fidelity Clean Energy ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| Fidelity Clean Energy ETF | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Clean Energy ETF | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Clean Energy ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.20% |
| Fidelity Clean Energy ETF | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| Fidelity Clean Energy ETF | Denmark | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| Fidelity Clean Energy ETF | New Zealand | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Clean Energy ETF | Israel | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Clean Energy ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.80% |
| Fidelity Clean Energy ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Cloud Computing ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Cloud Computing ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Fidelity Cloud Computing ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Cloud Computing ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Cloud Computing ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Cloud Computing ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Cloud Computing ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Cloud Computing ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Cloud Computing ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Cloud Computing ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Cloud Computing ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 88.20% |
| Fidelity Cloud Computing ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| Fidelity Cloud Computing ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Cloud Computing ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Cloud Computing ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.30% |
| Fidelity Cloud Computing ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Cloud Computing ETF | Taiwan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Cloud Computing ETF | Israel | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Cloud Computing ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.80% |
| Fidelity Cloud Computing ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Digital Health ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Digital Health ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Digital Health ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Digital Health ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Digital Health ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Digital Health ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Fidelity Digital Health ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Digital Health ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Fidelity Digital Health ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Digital Health ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Digital Health ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Fidelity Digital Health ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 86.40% |
| Fidelity Digital Health ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Digital Health ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| Fidelity Digital Health ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 60.60% |
| Fidelity Digital Health ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Fidelity Digital Health ETF | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Digital Health ETF | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Fidelity Digital Health ETF | Netherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Digital Health ETF | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Digital Health ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Digital Health ETF | Switzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Fidelity Digital Health ETF | Denmark | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Digital Health ETF | New Zealand | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Digital Health ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| Fidelity Digital Health ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Electric Vehicles and Future Transportation ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Electric Vehicles and Future Transportation ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Fidelity Electric Vehicles and Future Transportation ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.40% |
| Fidelity Electric Vehicles and Future Transportation ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Electric Vehicles and Future Transportation ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 57% |
| Fidelity Electric Vehicles and Future Transportation ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.50% |
| Fidelity Electric Vehicles and Future Transportation ETF | Korea, Republic of | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Electric Vehicles and Future Transportation ETF | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 29.70% |
| Fidelity Electric Vehicles and Future Transportation ETF | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Fidelity Electric Vehicles and Future Transportation ETF | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Fidelity Electric Vehicles and Future Transportation ETF | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Electric Vehicles and Future Transportation ETF | OtherMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity Electric Vehicles and Future Transportation ETF | Israel | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Electric Vehicles and Future Transportation ETF | BailiwickOfJerseyMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Electric Vehicles and Future Transportation ETF | Belgium | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Electric Vehicles and Future Transportation ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| Fidelity Electric Vehicles and Future Transportation ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Growth ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| Fidelity Enhanced Large Cap Growth ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| Fidelity Enhanced Large Cap Growth ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| Fidelity Enhanced Large Cap Growth ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| Fidelity Enhanced Large Cap Growth ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Enhanced Large Cap Growth ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Enhanced Large Cap Growth ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Enhanced Large Cap Growth ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Fidelity Enhanced Large Cap Growth ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Fidelity Enhanced Large Cap Growth ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Enhanced Large Cap Growth ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| Fidelity Enhanced Large Cap Growth ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.90% |
| Fidelity Enhanced Large Cap Growth ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Fidelity Enhanced Large Cap Growth ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Growth ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Fidelity Enhanced Large Cap Growth ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Growth ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.60% |
| Fidelity Enhanced Large Cap Growth ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Enhanced Large Cap Growth ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14% |
| Fidelity Enhanced Large Cap Growth ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Fidelity Enhanced Large Cap Growth ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Large Cap Growth ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.60% |
| Fidelity Enhanced Large Cap Growth ETF | Mexico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Growth ETF | Brazil | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Enhanced Large Cap Growth ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| Fidelity Enhanced Large Cap Growth ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Enhanced Large Cap Value ETF | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Enhanced Large Cap Value ETF | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Fidelity Enhanced Large Cap Value ETF | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Fidelity Enhanced Large Cap Value ETF | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Fidelity Enhanced Large Cap Value ETF | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Enhanced Large Cap Value ETF | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced Large Cap Value ETF | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced Large Cap Value ETF | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Enhanced Large Cap Value ETF | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Fidelity Enhanced Large Cap Value ETF | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Fidelity Enhanced Large Cap Value ETF | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.90% |
| Fidelity Enhanced Large Cap Value ETF | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| Fidelity Enhanced Large Cap Value ETF | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| Fidelity Enhanced Large Cap Value ETF | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Fidelity Enhanced Large Cap Value ETF | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.40% |
| Fidelity Enhanced Large Cap Value ETF | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Enhanced Large Cap Value ETF | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| Fidelity Enhanced Large Cap Value ETF | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| Fidelity Enhanced Large Cap Value ETF | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Enhanced Large Cap Value ETF | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| Fidelity Enhanced Large Cap Value ETF | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Fidelity Enhanced Large Cap Value ETF | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.30% |
| Fidelity Enhanced Large Cap Value ETF | Mexico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Large Cap Value ETF | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Large Cap Value ETF | Ireland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Fidelity Enhanced Large Cap Value ETF | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Enhanced Large Cap Value ETF | BailiwickOfJerseyMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Enhanced Large Cap Value ETF | Finland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Enhanced Large Cap Value ETF | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.60% |
| Fidelity Enhanced Large Cap Value ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
