Fidelity Small-Mid Factor ETF (FSMD) N-CSR 20 Sep 24 Certified annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
	Jul. 31, 2024
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	Fidelity Covington Trust
Entity Central Index Key	0000945908
Entity Investment Company Type	N-1A
Document Period End Date	Jul. 31, 2024

Shareholder Report

Shareholder Report	12 Months Ended
	Jul. 31, 2024 USD ($) shares
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	Fidelity Covington Trust
Entity Central Index Key	0000945908
Entity Investment Company Type	N-1A
Document Period End Date	Jul. 31, 2024
Fidelity Women's Leadership ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Women's Leadership ETF
Class Name	Fidelity® Women's Leadership ETF
Trading Symbol	FDWM
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Women's Leadership ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Women's Leadership ETF $ 0.59 %
Expenses Paid, Amount	$ 64
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B27">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE June 15, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Women's Leadership ETF   $10,000 $10,253   $8,803   $9,945   MSCI USA Women's Leadership Index   $10,000 $10,293   $8,844   $9,658   Russell 3000® Index   $10,000 $10,297   $9,540   $10,746     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Women's Leadership ETF - NAV  A  15.82% 4.62% Fidelity® Women's Leadership ETF - Market Price B 16.09% 4.79% MSCI USA Women's Leadership Index A 11.28% 2.33% Russell 3000® Index A 21.07% 8.78% A   From June 15, 2021   B   From June 17, 2021, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Jun. 15, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 3,942,372
Holdings Count | shares	106
Advisory Fees Paid, Amount	$ 21,836
Investment Company Portfolio Turnover	59%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 106 Total Advisory Fee $ Portfolio Turnover 59 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 29.1   Health Care 13.9   Consumer Discretionary 13.2   Financials 12.5   Industrials 11.5   Communication Services 5.8   Materials 4.0   Consumer Staples 3.3   Energy 3.0   Utilities 2.0   Real Estate 1.0     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets) United States 95.9 Ireland 2.0 China 1.5 Canada 0.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.4     Apple Inc 4.2     Microsoft Corp 3.8     NVIDIA Corp 3.2     Alphabet Inc Class C 2.8     Accenture PLC Class A 2.0     Walt Disney Co/The 2.0     Hologic Inc 1.9     Cigna Group/The 1.8     Salesforce Inc 1.6       27.7
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fund changed its classification form non-diversified to diversified and modified its principal investment strategies and risks to reflect the change during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B41">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B42">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B43">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Blue Chip Value ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Blue Chip Value ETF
Class Name	Fidelity® Blue Chip Value ETF
Trading Symbol	FBCV
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Blue Chip Value ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Blue Chip Value ETF $ 0.59 %
Expenses Paid, Amount	$ 63
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B61">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE June 2, 2020 through July 31, 2024. Initial investment of $10,000. Fidelity® Blue Chip Value ETF   $10,000 $10,123   $14,459   $14,642   $15,426   Russell 1000® Value Index   $10,000 $10,170   $14,169   $13,967   $15,124   Russell 1000® Index   $10,000 $10,678   $14,731   $13,719   $15,496     2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Blue Chip Value ETF - NAV  A  11.22% 13.84% Fidelity® Blue Chip Value ETF - Market Price B 11.33% 12.97% Russell 1000® Value Index A 14.80% 14.17% Russell 1000® Index A 21.50% 16.41% A   From June 2, 2020   B   From June 4, 2020, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Jun. 02, 2020
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 125,357,284
Holdings Count | shares	84
Advisory Fees Paid, Amount	$ 712,115
Investment Company Portfolio Turnover	33%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 84 Total Advisory Fee $ Portfolio Turnover 33 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Financials 24.8   Health Care 17.0   Industrials 10.7   Consumer Staples 10.4   Energy 8.4   Information Technology 7.3   Utilities 6.7   Communication Services 5.1   Consumer Discretionary 4.4   Materials 2.4   Real Estate 1.2     Common Stocks 98.4 Short-Term Investments and Net Other Assets (Liabilities) 1.6 ASSET ALLOCATION (% of Fund's net assets) United States 94.0 United Kingdom 4.0 Canada 1.1 Norway 0.7 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Exxon Mobil Corp 4.6     JPMorgan Chase & Co 4.1     Bank of America Corp 2.9     Cigna Group/The 2.9     UnitedHealth Group Inc 2.9     Comcast Corp Class A 2.9     Travelers Cos Inc/The 2.8     Berkshire Hathaway Inc Class B 2.7     PG&E Corp 2.3     Walt Disney Co/The 2.2       30.3
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fund changed its classification from non-diversified to diversified and modified its principal investment strategies and risks to reflect the change during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B75">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B76">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B77">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Quality Factor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Quality Factor ETF
Class Name	Fidelity® Quality Factor ETF
Trading Symbol	FQAL
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Quality Factor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Quality Factor ETF $ 0.18 %
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B95">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® Quality Factor ETF   $10,000 $11,613   $13,581   $14,551   $16,044   $21,820   $20,776   $22,948   $27,615   Fidelity U.S. Quality Factor Index℠   $10,000 $11,648   $13,664   $14,681   $16,233   $22,144   $21,143   $23,416   $28,228   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Quality Factor ETF - NAV  A  20.34% 13.67% 13.74% Fidelity® Quality Factor ETF - Market Price B 20.47% 13.67% 13.79% Fidelity U.S. Quality Factor Index℠ A 20.55% 13.97% 14.06% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 1,028,550,951
Holdings Count | shares	128
Advisory Fees Paid, Amount	$ 1,048,929
Investment Company Portfolio Turnover	34%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 128 Total Advisory Fee $ Portfolio Turnover 34 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 31.1   Financials 13.1   Health Care 12.0   Consumer Discretionary 9.7   Industrials 9.1   Communication Services 8.5   Consumer Staples 5.5   Energy 3.9   Utilities 2.4   Real Estate 2.3   Materials 2.3     Common Stocks 99.9 Short-Term Investments and Net Other Assets (Liabilities) 0.1 ASSET ALLOCATION (% of Fund's net assets) United States 100.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 7.0     NVIDIA Corp 6.8     Microsoft Corp 6.7     Alphabet Inc Class A 4.0     Meta Platforms Inc Class A 2.3     Broadcom Inc 2.2     Berkshire Hathaway Inc Class B 2.2     Eli Lilly & Co 2.1     Abbvie Inc 1.5     Johnson & Johnson 1.4       36.2
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B110">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B111">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B112">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Real Estate Investment ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Real Estate Investment ETF
Class Name	Fidelity® Real Estate Investment ETF
Trading Symbol	FPRO
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Real Estate Investment ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Real Estate Investment ETF $ 0.59 %
Expenses Paid, Amount	$ 62
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B129">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE February 2, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Real Estate Investment ETF   $10,000 $12,517   $12,307   $11,086   MSCI US IMI Real Estate 25/50 Index   $10,000 $12,325   $11,803   $10,663   S&P 500® Index   $10,000 $11,570   $11,033   $12,469     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Real Estate Investment ETF - NAV  A  10.20% 5.90% Fidelity® Real Estate Investment ETF - Market Price B 10.47% 5.93% MSCI US IMI Real Estate 25/50 Index A 10.73% 4.87% S&P 500® Index A 22.15% 12.80% A   From February 2, 2021   B   From February 4, 2021, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Feb. 02, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 12,851,950
Holdings Count | shares	41
Advisory Fees Paid, Amount	$ 76,515
Investment Company Portfolio Turnover	45%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 41 Total Advisory Fee $ Portfolio Turnover 45 %
Holdings [Text Block]	TOP INDUSTRIES (% of Fund's net assets) Specialized REITs 38.4   Residential REITs 17.1   Industrial REITs 15.0   Retail REITs 12.7   Health Care REITs 8.2   Real Estate Management & Development 6.1   Hotel & Resort REITs 1.4       Common Stocks 98.9 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets) United States 100.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Prologis Inc 11.0     American Tower Corp 9.1     Equinix Inc 6.7     Ventas Inc 5.6     Public Storage Operating Co 5.4     CBRE Group Inc Class A 4.0     Kimco Realty Corp 4.0     NNN REIT Inc 3.6     Digital Realty Trust Inc 3.5     CubeSmart 3.4       56.3
Fidelity Fundamental Large Cap Core ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Fundamental Large Cap Core ETF
Class Name	Fidelity® Fundamental Large Cap Core ETF
Trading Symbol	FFLC
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Fundamental Large Cap Core ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Fundamental Large Cap Core ETF $ 0.47 %
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, security selection was the primary contributor to the fund's performance versus the S&P 500® index for the fiscal year, especially within industrials. Stock selection and an underweight in consumer discretionary and picks and an overweight in utilities also boosted the fund's relative performance. • Not owning Tesla, a benchmark component that returned -13%, was the top individual relative contributor. The second-largest relative contributor was an overweight in Constellation Energy (+97%). This period we increased our position in the stock. Another notable relative contributor was an overweight in Eli Lilly (+78%), which was one of the fund's biggest holdings this period. • In contrast, stock picking and an underweight in financials notably detracted from the fund's performance versus the benchmark. An overweight in materials also hampered the fund's result, as did our stock picks in consumer staples, primarily within the household & personal products industry. • The biggest individual relative detractor was an overweight in Boeing (-20%). This period we increased our stake. The second-largest relative detractor was our stake in ON Semiconductor (-29%), a stock that was not held at period end. Another notable relative detractor was our holding in Broadcom (+24%). This was an investment we established this period. The company was one of our biggest holdings at period end. • Notable changes in positioning include decreased exposure to the materials sector and a higher allocation to financials.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B158">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE June 2, 2020 through July 31, 2024. Initial investment of $10,000. Fidelity® Fundamental Large Cap Core ETF   $10,000 $10,195   $14,786   $14,933   $18,122   S&P 500® Index   $10,000 $10,645   $14,525   $13,851   $15,654     2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Fundamental Large Cap Core ETF - NAV  A  27.19% 22.20% Fidelity® Fundamental Large Cap Core ETF - Market Price B 27.46% 21.42% S&P 500® Index A 22.15% 16.84% A   From June 2, 2020   B   From June 4, 2020, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Jun. 02, 2020
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 386,344,630
Holdings Count | shares	103
Advisory Fees Paid, Amount	$ 982,378
Investment Company Portfolio Turnover	63%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 103 Total Advisory Fee $ Portfolio Turnover 63 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 29.3   Health Care 12.6   Financials 12.5   Industrials 11.7   Communication Services 9.9   Consumer Discretionary 7.3   Energy 5.5   Consumer Staples 4.4   Utilities 3.9   Materials 1.2   Real Estate 1.1     Common Stocks 99.4 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets) United States 94.7 Netherlands 1.2 Germany 1.1 Taiwan 1.0 United Kingdom 0.4 Canada 0.4 Denmark 0.3 Zambia 0.3 China 0.3 Others 0.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 7.6     NVIDIA Corp 6.2     Meta Platforms Inc Class A 4.3     Apple Inc 4.0     Alphabet Inc Class A 3.6     Exxon Mobil Corp 3.2     Amazon.com Inc 3.0     Bank of America Corp 2.5     Wells Fargo & Co 2.0     Broadcom Inc 2.0       38.4
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period. Effective February 26, 2024, the fund has operated in reliance on Rule 6c-11 rather than pursuant to an exemptive order from the Securities and Exchange Commission. The fund changed its classification from non-diversified to diversified and modified its principal investment strategies and risks to reflect the change during the reporting period. The fund's name changed from Fidelity New Millennium ETF to Fidelity Fundamental Large Cap Core ETF during the reporting period. The fund modified its principal investment strategies to include adopting a policy of investing at least 80% of assets in equity securities of companies with large market capitalizations. The fund modified its investment process and principal investment risks pursuant to the change in its principal investment strategies.
Material Fund Change Name [Text Block]	The fund's name changed from Fidelity New Millennium ETF to Fidelity Fundamental Large Cap Core ETF during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Strategies [Text Block]	The fund modified its principal investment strategies to include adopting a policy of investing at least 80% of assets in equity securities of companies with large market capitalizations.
Material Fund Change Risks Change [Text Block]	The fund modified its investment process and principal investment risks pursuant to the change in its principal investment strategies.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B176">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B177">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B178">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Sustainable U.S. Equity ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Sustainable U.S. Equity ETF
Class Name	Fidelity® Sustainable U.S. Equity ETF
Trading Symbol	FSST
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Sustainable U.S. Equity ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Sustainable U.S. Equity ETF $ 0.59 %
Expenses Paid, Amount	$ 66
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B196">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE June 15, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Sustainable U.S. Equity ETF   $10,000 $10,399   $9,670   $11,048   MSCI USA IMI ESG Leaders Index   $10,000 $10,375   $9,716   $10,983   Russell 3000® Index   $10,000 $10,297   $9,540   $10,746     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Sustainable U.S. Equity ETF - NAV  A  21.14% 9.76% Fidelity® Sustainable U.S. Equity ETF - Market Price B 21.39% 9.99% MSCI USA IMI ESG Leaders Index  A 22.55% 9.96% Russell 3000® Index A 21.07% 8.78% A   From June 15, 2021   B   From June 17, 2021, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Jun. 15, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 14,374,224
Holdings Count | shares	69
Advisory Fees Paid, Amount	$ 69,263
Investment Company Portfolio Turnover	52%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 69 Total Advisory Fee $ Portfolio Turnover 52 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 27.5   Health Care 12.7   Financials 11.3   Industrials 10.6   Consumer Discretionary 10.3   Communication Services 8.2   Materials 4.3   Consumer Staples 3.2   Energy 2.8   Utilities 1.9   Real Estate 1.5     Common Stocks 94.3 Short-Term Investments and Net Other Assets (Liabilities) 5.7 ASSET ALLOCATION (% of Fund's net assets) United States 97.6 Ireland 1.9 China 0.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 6.9     Microsoft Corp 6.0     NVIDIA Corp 5.1     Amazon.com Inc 4.2     Alphabet Inc Class A 3.5     Procter & Gamble Co/The 2.7     Cigna Group/The 2.6     Moody's Corp 2.5     Merck & Co Inc 2.5     Walt Disney Co/The 2.2       38.2
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fund changed its classification form non-diversified to diversified and modified its principal investment strategies and risks to reflect the change during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B210">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B211">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B212">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Stocks for Inflation ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Stocks for Inflation ETF
Class Name	Fidelity® Stocks for Inflation ETF
Trading Symbol	FCPI
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Stocks for Inflation ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Stocks for Inflation ETF $ 0.19 %
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.19%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, information technology - the ETF's largest sector weighting - gained 31% and contributed most to the fund's performance for the fiscal year. Health care, which gained 27%, also helped, benefiting from the pharmaceuticals, biotechnology & life sciences industry (+29%), as did consumer discretionary, which advanced 45%. The financials sector rose approximately 27%, while utilities gained about 38% and energy advanced 21%. Other contributors included the consumer staples (+12%), industrials (+35%), real estate (+20%), communication services (+30%) and materials (+1%) sectors. • Turning to individual stocks, the top contributor was Nvidia (+171%), from the semiconductors & semiconductor equipment group. From the same category, Broadcom gained roughly 97%. Vistra (+75%), from the utilities sector, also contributed. In pharmaceuticals, biotechnology & life sciences, Eli Lilly (+79%) helped, as did Microsoft (+26%), from the software & services industry. • Conversely, the biggest detractor was Alpha Metallurgical Resources (-21%), from the materials sector. Pfizer (-21%) and Bristol-Myers Squibb (-18%), within the pharmaceuticals, biotechnology & life sciences category, also hindered the fund. Molina Healthcare (-15%), from the health care equipment & services industry, further hurt the fund, as did BellRing Brands, in household & personal products.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B230">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE November 5, 2019 through July 31, 2024. Initial investment of $10,000. Fidelity® Stocks for Inflation ETF   $10,000 $9,812   $12,930   $13,580   $14,635   $18,380   Fidelity Stocks for Inflation Factor Index℠   $10,000 $9,844   $13,016   $13,712   $14,821   $18,629   Russell 1000® Index   $10,000 $10,850   $14,969   $13,941   $15,746   $19,132     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Stocks for Inflation ETF - NAV  A  25.59% 13.70% Fidelity® Stocks for Inflation ETF - Market Price B 25.56% 13.64% Fidelity Stocks for Inflation Factor Index℠ A 25.69% 14.03% Russell 1000® Index A 21.50% 14.67% A   From November 5, 2019   B   From November 7, 2019, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Nov. 05, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 180,247,155
Holdings Count | shares	102
Advisory Fees Paid, Amount	$ 263,531
Investment Company Portfolio Turnover	76%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 102 Total Advisory Fee $ Portfolio Turnover 76 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 25.0   Health Care 17.2   Consumer Staples 10.4   Financials 8.4   Energy 8.3   Consumer Discretionary 5.9   Materials 5.7   Utilities 5.6   Real Estate 5.5   Industrials 4.4   Communication Services 3.4     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 99.6 Ireland 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 5.4     Microsoft Corp 5.2     NVIDIA Corp 5.0     Vistra Corp 3.4     Eli Lilly & Co 2.5     National Fuel Gas Co 2.2     Cheniere Energy Inc 2.2     CF Industries Holdings Inc 2.2     Procter & Gamble Co/The 2.1     Chord Energy Corp 2.1       32.3
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B245">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B246">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B247">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Magellan ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Magellan℠ ETF
Class Name	Fidelity® Magellan℠ ETF
Trading Symbol	FMAG
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Magellan℠ ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Magellan℠ ETF $ 0.59 %
Expenses Paid, Amount	$ 69
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B264">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE February 2, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Magellan℠ ETF   $10,000 $11,565   $10,466   $11,221   S&P 500® Index   $10,000 $11,570   $11,033   $12,469     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Magellan℠ ETF - NAV  A  32.40% 12.00% Fidelity® Magellan℠ ETF - Market Price B 32.45% 11.70% S&P 500® Index A 22.15% 12.80% A   From February 2, 2021   B   From February 4, 2021, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Feb. 02, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 115,822,790
Holdings Count | shares	57
Advisory Fees Paid, Amount	$ 426,548
Investment Company Portfolio Turnover	62%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 57 Total Advisory Fee $ Portfolio Turnover 62 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 35.8   Industrials 15.9   Financials 10.9   Health Care 9.9   Consumer Discretionary 9.6   Communication Services 8.4   Materials 5.3   Consumer Staples 1.8   Utilities 1.2     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets) United States 96.8 Canada 1.2 Netherlands 1.0 Denmark 1.0 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 7.9     NVIDIA Corp 7.3     Amazon.com Inc 4.8     Meta Platforms Inc Class A 3.4     Alphabet Inc Class A 3.4     Broadcom Inc 2.8     Eli Lilly & Co 2.4     UnitedHealth Group Inc 2.4     Visa Inc Class A 2.1     Mastercard Inc Class A 2.0       38.5
Fidelity Fundamental Small-Mid Cap ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Fundamental Small-Mid Cap ETF
Class Name	Fidelity® Fundamental Small-Mid Cap ETF
Trading Symbol	FFSM
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Fundamental Small-Mid Cap ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Fundamental Small-Mid Cap ETF $ 0.51 %
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	0.51%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B293">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE February 2, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Fundamental Small-Mid Cap ETF   $10,000 $11,436   $10,534   $11,484   Russell 2500™ Index   $10,000 $10,827   $9,607   $10,380   Russell 3000® Index   $10,000 $11,395   $10,557   $11,893     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Fundamental Small-Mid Cap ETF - NAV  A  19.70% 9.54% Fidelity® Fundamental Small-Mid Cap ETF - Market Price B 20.03% 8.92% Russell 2500™ Index A 13.06% 4.69% Russell 3000® Index A 21.07% 11.00% A   From February 2, 2021   B   From February 4, 2021, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Feb. 02, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 75,562,094
Holdings Count | shares	177
Advisory Fees Paid, Amount	$ 248,027
Investment Company Portfolio Turnover	38%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 177 Total Advisory Fee $ Portfolio Turnover 38 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Industrials 22.5   Financials 16.3   Consumer Discretionary 13.7   Information Technology 11.4   Health Care 10.6   Energy 6.8   Materials 6.7   Consumer Staples 4.3   Real Estate 4.0   Utilities 1.8   Communication Services 0.9     Common Stocks 99.0 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets) United States 91.8 Canada 3.1 United Kingdom 2.3 Thailand 1.1 Israel 0.6 Netherlands 0.5 Puerto Rico 0.4 Japan 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     TechnipFMC PLC 1.7     EMCOR Group Inc 1.6     Tempur Sealy International Inc 1.5     AutoZone Inc 1.4     Murphy USA Inc 1.4     Universal Health Services Inc Class B 1.4     BJ's Wholesale Club Holdings Inc 1.4     Antero Resources Corp 1.3     Arch Capital Group Ltd 1.2     TFI International Inc (United States) 1.2       14.1
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fund changed its classification form non-diversified to diversified and modified its principal investment strategies and risks to reflect the change during the reporting period. The fund changed its name from Fidelity Small-Mid Cap Opportunities ETF to Fidelity Fundamental Small-Mid Cap ETF. The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses • Expense reductions The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Name [Text Block]	The fund changed its name from Fidelity Small-Mid Cap Opportunities ETF to Fidelity Fundamental Small-Mid Cap ETF.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses • Expense reductions The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B309">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B310">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B311">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Blue Chip Growth ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Blue Chip Growth ETF
Class Name	Fidelity® Blue Chip Growth ETF
Trading Symbol	FBCG
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Blue Chip Growth ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Blue Chip Growth ETF $ 0.59 %
Expenses Paid, Amount	$ 69
Expense Ratio, Percent	0.59%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B328">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE June 2, 2020 through July 31, 2024. Initial investment of $10,000. Fidelity® Blue Chip Growth ETF   $10,000 $11,368   $16,387   $12,467   $15,639   Russell 1000® Growth Index   $10,000 $11,108   $15,182   $13,371   $15,685   Russell 1000® Index   $10,000 $10,678   $14,731   $13,719   $15,496     2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Blue Chip Growth ETF - NAV  A  31.18% 18.83% Fidelity® Blue Chip Growth ETF - Market Price B 31.23% 18.93% Russell 1000® Growth Index A 26.94% 17.98% Russell 1000® Index A 21.50% 16.41% A   From June 2, 2020   B   From June 4, 2020, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Jun. 02, 2020
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 1,975,020,161
Holdings Count | shares	225
Advisory Fees Paid, Amount	$ 7,203,240
Investment Company Portfolio Turnover	42%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 225 Total Advisory Fee $ Portfolio Turnover 42 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 44.3   Consumer Discretionary 19.9   Communication Services 16.0   Health Care 8.6   Industrials 3.9   Financials 3.9   Consumer Staples 1.3   Energy 1.1   Materials 0.7   Real Estate 0.2     Common Stocks 99.9 Short-Term Investments and Net Other Assets (Liabilities) 0.1 ASSET ALLOCATION (% of Fund's net assets) United States 95.6 China 1.6 Taiwan 0.8 Denmark 0.6 Canada 0.5 Netherlands 0.3 Singapore 0.1 Israel 0.1 United Kingdom 0.1 Others 0.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     NVIDIA Corp 13.7     Apple Inc 10.9     Microsoft Corp 9.1     Amazon.com Inc 9.0     Alphabet Inc Class A 6.8     Meta Platforms Inc Class A 4.9     Eli Lilly & Co 3.0     Netflix Inc 2.4     Snap Inc Class A 1.4     NXP Semiconductors NV 1.3       62.5
Fidelity U.S. Multifactor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® U.S. Multifactor ETF
Class Name	Fidelity® U.S. Multifactor ETF
Trading Symbol	FLRG
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® U.S. Multifactor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® U.S. Multifactor ETF $ 0.18 %
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, information technology - the ETF's largest sector weighting - gained 27% and contributed most to the fund's performance for the fiscal year. Financials, which gained 30%, also helped, as did consumer discretionary, which advanced about 27%. The health care sector rose approximately 20%, boosted by the pharmaceuticals, biotechnology & life sciences industry (+24%), while communication services gained 31% and industrials advanced 19%. Other contributors included the utilities (+38%), consumer staples (+11%), energy (+14%) and real estate (+8%) sectors. • In contrast, materials returned about -2% and detracted. • Turning to individual stocks, the top contributor was Nvidia (+61%), from the semiconductors & semiconductor equipment group. From the same category, Broadcom gained 97%. Microsoft (+25%), from the software & services industry, also boosted the fund. In media & entertainment, Meta Platforms gained 68%. Lastly, in pharmaceuticals, biotechnology & life sciences, Eli Lilly (+79%) also helped. • Conversely, the biggest detractor was Pfizer (-21%), from the pharmaceuticals, biotechnology & life sciences industry. From the same category, Bristol-Myers Squibb returned -18%, and Louisiana Pacific (-22%), from the materials sector, also detracted. Hershey, within the food, beverage & tobacco group, returned -16%. Lastly, Molina Healthcare (-12%), from the health care equipment & services industry, also hindered the fund.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B357">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 15, 2020 through July 31, 2024. Initial investment of $10,000. Fidelity® U.S. Multifactor ETF   $10,000 $12,994   $12,651   $14,015   $17,303   Fidelity U.S. Multifactor Index℠   $10,000 $13,032   $12,726   $14,143   $17,465   Russell 1000® Index   $10,000 $13,219   $12,310   $13,904   $16,894     2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® U.S. Multifactor ETF - NAV  A  23.46% 15.19% Fidelity® U.S. Multifactor ETF - Market Price B 23.66% 15.64% Fidelity U.S. Multifactor Index℠ A 23.49% 15.47% Russell 1000® Index A 21.50% 14.48% A   From September 15, 2020   B   From September 17, 2020, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 15, 2020
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 121,738,768
Holdings Count | shares	102
Advisory Fees Paid, Amount	$ 123,002
Investment Company Portfolio Turnover	42%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 102 Total Advisory Fee $ Portfolio Turnover 42 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 29.9   Financials 13.2   Health Care 12.0   Consumer Discretionary 10.1   Industrials 9.4   Communication Services 8.4   Consumer Staples 5.6   Energy 3.7   Utilities 2.9   Real Estate 2.5   Materials 2.1     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 99.4 Ireland 0.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 6.5     Microsoft Corp 6.2     NVIDIA Corp 6.0     Alphabet Inc Class A 3.8     Meta Platforms Inc Class A 2.3     Eli Lilly & Co 2.0     Vistra Corp 1.8     Broadcom Inc 1.6     Visa Inc Class A 1.5     Mastercard Inc Class A 1.5       33.2
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B372">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B373">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B374">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Fundamental Large Cap Growth ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Fundamental Large Cap Growth ETF
Class Name	Fidelity® Fundamental Large Cap Growth ETF
Trading Symbol	FFLG
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Fundamental Large Cap Growth ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Fundamental Large Cap Growth ETF $ 0.48 %
Expenses Paid, Amount	$ 55
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, market selection was the primary contributor to the fund's performance versus the Russell 1000 Growth Index for the fiscal year, helped by an underweight in consumer discretionary, where an underweight in automobiles & components helped most. Stock selection in industrials and information technology also boosted the fund's relative performance. • The top individual relative contributor was a sizable underweight in Apple (+14%). This period we increased our stake in Apple, and the stock was among the fund's biggest holdings at period end. The second-largest relative contributor was an overweight in Nvidia (+151%), which was the fund's largest holding as of July 31. Another notable relative contributor was an underweight in Tesla (-13%). The stock was not held at the end of the period. • In contrast, the biggest detractor from performance versus the benchmark was stock picking in communication services, primarily within the media & entertainment industry. Stock picks in financials also hampered the fund's result. • The largest individual relative detractor was an overweight in Roku (-38%). This period we decreased our position. A non-benchmark stake in ON Semiconductor returned -28%. An underweight in Broadcom (+82%) also hurt. This was an investment we established this period. • Notable changes in positioning include increased exposure to the consumer discretionary and industrials sectors.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B392">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE February 2, 2021 through July 31, 2024. Initial investment of $10,000. Fidelity® Fundamental Large Cap Growth ETF   $10,000 $10,582   $7,245   $8,970   Russell 1000® Growth Index   $10,000 $11,336   $9,984   $11,712   Russell 1000® Index   $10,000 $11,471   $10,683   $12,066     2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year Life of Fund Fidelity® Fundamental Large Cap Growth ETF - NAV  A  28.10% 4.06% Fidelity® Fundamental Large Cap Growth ETF - Market Price B 28.29% 3.36% Russell 1000® Growth Index A 26.94% 12.02% Russell 1000® Index A 21.50% 11.57% A   From February 2, 2021   B   From February 4, 2021, date initially listed on the Cboe BZX Exchange, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Feb. 02, 2021
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 317,130,502
Holdings Count | shares	93
Advisory Fees Paid, Amount	$ 1,192,982
Investment Company Portfolio Turnover	52%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 93 Total Advisory Fee $ Portfolio Turnover 52 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 46.1   Communication Services 15.5   Consumer Discretionary 14.1   Health Care 9.6   Industrials 7.2   Financials 3.4   Consumer Staples 2.0   Energy 1.1   Real Estate 0.4   Utilities 0.3   Materials 0.1     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 92.4 Taiwan 2.0 Netherlands 1.8 China 1.8 France 0.6 Denmark 0.4 Canada 0.3 India 0.3 Singapore 0.2 Others 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     NVIDIA Corp 13.0     Microsoft Corp 10.5     Apple Inc 9.7     Amazon.com Inc 7.5     Meta Platforms Inc Class A 4.6     Alphabet Inc Class C 4.4     Alphabet Inc Class A 2.7     Uber Technologies Inc 2.0     Taiwan Semiconductor Manufacturing Co Ltd ADR 2.0     Mastercard Inc Class A 1.9       58.3
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee The fund's contractual management fee was reduced during the reporting period. Effective February 26, 2024, the fund has operated in reliance on Rule 6c-11 rather than pursuant to an exemptive order from the Securities and Exchange Commission. The fund's name changed from Fidelity Growth Opportunities ETF to Fidelity Fundamental Large Cap Growth ETF during the reporting period. The fund modified its principal investment strategies to include adopting a policy of investing at least 80% of assets in equity securities of companies with large market capitalizations. The fund modified its investment process and principal investment risks pursuant to the change in its principal investment strategies.
Material Fund Change Name [Text Block]	The fund's name changed from Fidelity Growth Opportunities ETF to Fidelity Fundamental Large Cap Growth ETF during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Strategies [Text Block]	The fund modified its principal investment strategies to include adopting a policy of investing at least 80% of assets in equity securities of companies with large market capitalizations.
Material Fund Change Risks Change [Text Block]	The fund modified its investment process and principal investment risks pursuant to the change in its principal investment strategies.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B410">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B411">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B412">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Momentum Factor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Momentum Factor ETF
Class Name	Fidelity® Momentum Factor ETF
Trading Symbol	FDMO
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Momentum Factor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Momentum Factor ETF $ 0.18 %
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B430">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® Momentum Factor ETF   $10,000 $11,408   $13,543   $14,614   $16,231   $20,708   $19,217   $20,950   $27,012   Fidelity U.S. Momentum Factor Index℠   $10,000 $11,443   $13,633   $14,749   $16,427   $21,025   $19,571   $21,399   $27,651   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Momentum Factor ETF - NAV  A  28.94% 13.07% 13.43% Fidelity® Momentum Factor ETF - Market Price B 29.08% 13.02% 13.53% Fidelity U.S. Momentum Factor Index℠ A 29.22% 13.39% 13.76% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 220,921,232
Holdings Count | shares	126
Advisory Fees Paid, Amount	$ 316,309
Investment Company Portfolio Turnover	119%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 126 Total Advisory Fee $ Portfolio Turnover 119 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 29.7   Financials 13.4   Health Care 12.2   Consumer Discretionary 10.2   Industrials 9.4   Communication Services 8.4   Consumer Staples 5.7   Energy 3.5   Real Estate 2.6   Materials 2.5   Utilities 2.2     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 99.6 United Kingdom 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 7.2     NVIDIA Corp 7.0     Alphabet Inc Class A 3.9     Amazon.com Inc 3.8     Broadcom Inc 2.6     Meta Platforms Inc Class A 2.3     Berkshire Hathaway Inc Class B 2.1     Eli Lilly & Co 2.0     JPMorgan Chase & Co 1.7     Abbvie Inc 1.5       34.1
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B445">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B446">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B447">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity High Dividend ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® High Dividend ETF
Class Name	Fidelity® High Dividend ETF
Trading Symbol	FDVV
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® High Dividend ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® High Dividend ETF $ 0.19 %
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.19%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B465">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® High Dividend ETF   $10,000 $10,961   $12,739   $13,269   $12,667   $18,040   $18,839   $21,140   $25,581   Fidelity High Dividend Index℠   $10,000 $10,996   $12,826   $13,410   $12,818   $18,315   $19,188   $21,596   $26,186   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® High Dividend ETF - NAV  A  21.01% 14.03% 12.65% Fidelity® High Dividend ETF - Market Price B 21.32% 14.01% 12.78% Fidelity High Dividend Index℠ A 21.25% 14.32% 12.98% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 3,166,847,867
Holdings Count | shares	107
Advisory Fees Paid, Amount	$ 3,934,584
Investment Company Portfolio Turnover	14%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 107 Total Advisory Fee $ Portfolio Turnover 14 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 25.2   Industrials 16.2   Consumer Staples 12.1   Energy 10.3   Utilities 9.9   Real Estate 9.1   Financials 6.9   Health Care 5.3   Consumer Discretionary 3.2   Communication Services 1.6     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 91.4 United Kingdom 4.3 Japan 2.8 Denmark 1.0 Germany 0.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 5.8     NVIDIA Corp 5.7     Microsoft Corp 5.4     Exxon Mobil Corp 2.1     Broadcom Inc 2.0     Procter & Gamble Co/The 2.0     Philip Morris International Inc 2.0     PepsiCo Inc 1.7     NextEra Energy Inc 1.7     Altria Group Inc 1.6       30.0
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B480">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B481">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B482">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Value Factor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Value Factor ETF
Class Name	Fidelity® Value Factor ETF
Trading Symbol	FVAL
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Value Factor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Value Factor ETF $ 0.18 %
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, information technology gained roughly 17% and contributed most to the fund's performance for the fiscal year. Financials, which gained about 33%, also helped, as did communication services, which advanced 28%, lifted by the media & entertainment industry (+27%). The consumer discretionary sector rose 21%, boosted by the consumer discretionary distribution & retail industry (+33%), while industrials gained about 19% and consumer staples advanced approximately 10%. Other contributors included the energy (+14%), utilities (+22%), health care (+3%), materials (+8%) and real estate (+6%) sectors. • Turning to individual stocks, the top contributor was Microsoft (+26%), from the software & services group. Amazon.com (+40%), from the consumer discretionary distribution & retail group, also helped. In media & entertainment, Alphabet (+29%) and Meta Platforms (+49%) further contributed. • Conversely, the biggest detractor was United Parcel Service (-27%), from the transportation industry. Other notable detractors included Bristol-Myers Squibb (-20%), a stock in the pharmaceuticals, biotechnology & life sciences category, and DXC Technology (-26%), a stock in the software & services industry. Financial firm PayPal Holdings (-22%) also hurt, as did Humana (-20%), in health care equipment & services.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B500">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® Value Factor ETF   $10,000 $11,866   $13,777   $14,322   $14,769   $21,055   $20,241   $22,736   $26,698   Fidelity U.S. Value Factor Index℠   $10,000 $11,901   $13,865   $14,454   $14,942   $21,371   $20,600   $23,204   $27,287   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Value Factor ETF - NAV  A  17.43% 13.27% 13.26% Fidelity® Value Factor ETF - Market Price B 17.56% 13.24% 13.35% Fidelity U.S. Value Factor Index℠ A 17.60% 13.55% 13.57% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 809,153,121
Holdings Count | shares	129
Advisory Fees Paid, Amount	$ 1,192,232
Investment Company Portfolio Turnover	31%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 129 Total Advisory Fee $ Portfolio Turnover 31 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 28.4   Financials 14.2   Health Care 11.6   Consumer Discretionary 10.2   Industrials 9.7   Communication Services 8.6   Consumer Staples 5.9   Energy 3.8   Utilities 2.5   Real Estate 2.5   Materials 2.4     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 98.8 Ireland 1.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 7.5     Microsoft Corp 7.2     Alphabet Inc Class A 4.0     Amazon.com Inc 3.9     Meta Platforms Inc Class A 2.4     Berkshire Hathaway Inc Class B 2.1     UnitedHealth Group Inc 1.9     JPMorgan Chase & Co 1.8     QUALCOMM Inc 1.5     Applied Materials Inc 1.5       33.8
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B515">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B516">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B517">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Low Volatility Factor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Low Volatility Factor ETF
Class Name	Fidelity® Low Volatility Factor ETF
Trading Symbol	FDLO
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Low Volatility Factor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Low Volatility Factor ETF $ 0.18 %
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B535">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® Low Volatility Factor ETF   $10,000 $11,295   $13,203   $15,077   $16,176   $20,851   $20,618   $22,465   $26,124   Fidelity U.S. Low Volatility Factor Index℠   $10,000 $11,330   $13,289   $15,181   $16,329   $21,107   $20,933   $22,873   $26,642   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Low Volatility Factor ETF - NAV  A  16.29% 11.62% 12.95% Fidelity® Low Volatility Factor ETF - Market Price B 16.31% 11.62% 13.09% Fidelity U.S. Low Volatility Factor Index℠ A 16.48% 11.91% 13.23% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 1,143,576,609
Holdings Count | shares	127
Advisory Fees Paid, Amount	$ 1,550,627
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 127 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 29.0   Financials 12.9   Health Care 12.2   Consumer Discretionary 10.4   Industrials 9.6   Communication Services 8.7   Consumer Staples 6.0   Energy 3.7   Materials 2.6   Real Estate 2.5   Utilities 2.2     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 98.7 Ireland 1.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 7.8     Microsoft Corp 7.4     Alphabet Inc Class A 4.4     Amazon.com Inc 3.9     Eli Lilly & Co 2.0     UnitedHealth Group Inc 1.7     Oracle Corp 1.6     Texas Instruments Inc 1.5     Visa Inc Class A 1.5     Mastercard Inc Class A 1.4       33.2
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B550">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B551">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B552">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Small-Mid Multifactor ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Small-Mid Multifactor ETF
Class Name	Fidelity® Small-Mid Multifactor ETF
Trading Symbol	FSMD
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Small-Mid Multifactor ETF for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Small-Mid Multifactor ETF $ 0.18 %
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • U.S. equities gained for the 12 months ending July 31, 2024, driven by resilient corporate profits, a frenzy over generative artificial intelligence and the Federal Reserve's likely pivot to cutting interest rates later this year. • Against this backdrop, industrials - the ETF's largest sector weighting - gained 26% and contributed most to the fund's performance for the fiscal year, driven by the capital goods industry (+30%). Financials, which gained approximately 29%, also helped, as did consumer discretionary, which advanced roughly 27%. The information technology sector rose about 13%, boosted by the technology hardware & equipment industry (+36%), while materials gained approximately 25% and energy advanced about 23%. All other sectors - including real estate (+12%), consumer staples (+20%), health care (+4%), utilities (+8%) and communication services (+1%) - also had positive results. • Turning to individual stocks, the biggest contributor was Super Micro Computer (+139%), from the technology hardware & equipment category. Viking Therapeutics (+307%), a stock in the pharmaceuticals, biotechnology & life sciences category, also helped. Abercrombie & Fitch, within the consumer discretionary distribution & retail industry, gained 248%. In consumer staples distribution & retail, Sprouts Farmers Market (+154%) contributed. Lastly, in consumer services, Wingstop (+121%) also boosted the fund. • In contrast, the biggest detractor was New York Community Bancorp (-69%), from the banks category. UiPath (-51%) and DoubleVerify Holdings (-50%), from the software & services industry, also hindered the fund. Another notable detractor was QuidelOrtho (-55%), a stock in the health care equipment & services group. Lastly, in telecommunication services, Iridium Communications returned roughly -42%.
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B570">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE February 26, 2019 through July 31, 2024. Initial investment of $10,000. Fidelity® Small-Mid Multifactor ETF   $10,000 $10,335   $9,829   $14,174   $13,841   $14,937   Fidelity Small-Mid Multifactor Index℠   $10,000 $10,350   $9,866   $14,281   $13,993   $15,144   Dow Jones U.S. Completion Total Stock Market Index℠   $10,000 $10,374   $10,905   $16,466   $12,868   $14,212   Dow Jones U.S. Total Stock Market Index℠   $10,000 $10,689   $11,843   $16,453   $15,173   $17,088     2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Small-Mid Multifactor ETF - NAV  A  19.10% 11.47% 11.19% Fidelity® Small-Mid Multifactor ETF - Market Price B 19.39% 11.49% 11.20% Fidelity Small-Mid Multifactor Index℠ A 19.37% 11.80% 11.52% Dow Jones U.S. Completion Total Stock Market Index℠ A 14.96% 9.51% 9.46% Dow Jones U.S. Total Stock Market Index℠ A 21.10% 14.13% 14.33% A   From February 26, 2019   B   From February 28, 2019, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Feb. 26, 2019
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 428,135,489
Holdings Count | shares	589
Advisory Fees Paid, Amount	$ 339,784
Investment Company Portfolio Turnover	50%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 589 Total Advisory Fee $ Portfolio Turnover 50 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Industrials 17.9   Financials 16.9   Consumer Discretionary 13.9   Health Care 13.0   Information Technology 11.6   Real Estate 6.7   Materials 5.7   Energy 4.5   Consumer Staples 3.9   Communication Services 2.9   Utilities 2.8     Common Stocks 99.8 Short-Term Investments and Net Other Assets (Liabilities) 0.2 ASSET ALLOCATION (% of Fund's net assets) United States 97.3 Puerto Rico 0.6 Canada 0.5 Bermuda 0.4 United Kingdom 0.4 Thailand 0.2 Sweden 0.2 Monaco 0.2 Ireland 0.1 Others 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Texas Pacific Land Corp 0.5     EMCOR Group Inc 0.5     Pure Storage Inc Class A 0.4     Toll Brothers Inc 0.4     United Therapeutics Corp 0.4     Reinsurance Group of America Inc 0.4     TechnipFMC PLC 0.4     TopBuild Corp 0.4     International Paper Co 0.4     Casey's General Stores Inc 0.4       4.2
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee • Operating expenses The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B585">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B586">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B587">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Dividend ETF for Rising Rates
Shareholder Report [Line Items]
Fund Name	Fidelity® Dividend ETF for Rising Rates
Class Name	Fidelity® Dividend ETF for Rising Rates
Trading Symbol	FDRR
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Dividend ETF for Rising Rates for the period August 1, 2023 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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.
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Dividend ETF for Rising Rates $ 0.19 %
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.19%
Factors Affecting Performance [Text Block]	What affected the Fund's performance this period? • • • • •
Performance Past Does Not Indicate Future [Text]	The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B605">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span>
Line Graph [Table Text Block]	How did the Fund perform over the life of Fund?      CUMULATIVE PERFORMANCE September 12, 2016 through July 31, 2024. Initial investment of $10,000. Fidelity® Dividend ETF for Rising Rates   $10,000 $11,485   $13,098   $13,896   $14,154   $19,471   $19,264   $20,838   $24,558   Fidelity Dividend Index for Rising Rates℠   $10,000 $11,526   $13,195   $14,045   $14,341   $19,793   $19,650   $21,314   $25,156   Russell 1000® Index   $10,000 $11,635   $13,519   $14,600   $16,357   $22,568   $21,017   $23,739   $28,843     2016 2017 2018 2019 2020 2021 2022 2023 2024
Average Annual Return [Table Text Block]	AVERAGE ANNUAL TOTAL RETURNS:     1 Year 5 Year Life of Fund Fidelity® Dividend ETF for Rising Rates - NAV  A  17.85% 12.06% 12.06% Fidelity® Dividend ETF for Rising Rates - Market Price B 17.95% 12.03% 12.11% Fidelity Dividend Index for Rising Rates℠ A 18.03% 12.36% 12.41% Russell 1000® Index A 21.50% 14.59% 14.37% A   From September 12, 2016   B   From September 15, 2016, date initially listed on the NYSE Arca, Inc. exchange   Visit www.fidelity.com for more recent performance information.   The Fund's past performance is not a good predictor of the Fund's future performance.  The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Performance Inception Date	Sep. 12, 2016
No Deduction of Taxes [Text Block]	The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.
Net Assets	$ 544,623,603
Holdings Count | shares	116
Advisory Fees Paid, Amount	$ 961,817
Investment Company Portfolio Turnover	32%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 116 Total Advisory Fee $ Portfolio Turnover 32 %
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Information Technology 32.5   Financials 13.6   Health Care 11.6   Industrials 9.2   Consumer Discretionary 9.0   Communication Services 7.6   Consumer Staples 5.5   Energy 3.5   Materials 2.5   Real Estate 2.4   Utilities 2.3     Common Stocks 99.7 Short-Term Investments and Net Other Assets (Liabilities) 0.3 ASSET ALLOCATION (% of Fund's net assets) United States 93.7 United Kingdom 2.0 Germany 1.8 Sweden 1.2 Japan 0.9 Denmark 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Apple Inc 7.5     NVIDIA Corp 7.4     Microsoft Corp 7.1     Broadcom Inc 2.6     Eli Lilly & Co 2.2     JPMorgan Chase & Co 1.9     UnitedHealth Group Inc 1.9     Texas Instruments Inc 1.6     Johnson & Johnson 1.5     Abbvie Inc 1.4       35.1
Material Fund Change [Text Block]	How has the Fund changed? This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com . The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee The fund's contractual management fee was reduced during the reporting period.
Material Fund Change Expenses [Text Block]	The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes: • Management fee The fund's contractual management fee was reduced during the reporting period.
Summary of Change Legend [Text Block]	This is a summary of certain changes to the Fund since August 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by November 29, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-FIDELITY or by sending an e-mail to fidfunddocuments fidelity.com .
Updated Prospectus Phone Number	1-800-FIDELITY</span>" id="sjs-B620">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-FIDELITY&lt;/span>
Updated Prospectus Email Address	fidfunddocuments@fidelity.com</span>" id="sjs-B621">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com&lt;/span>
Updated Prospectus Web Address	fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B622">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec&lt;/span>
Fidelity Fundamental Large Cap Value ETF
Shareholder Report [Line Items]
Fund Name	Fidelity® Fundamental Large Cap Value ETF
Class Name	Fidelity® Fundamental Large Cap Value ETF
Trading Symbol	FFLV
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains information about Fidelity® Fundamental Large Cap Value ETF for the period February 22, 2024 to July 31, 2024.
Shareholder Report Annual or Semi-Annual	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 year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Fundamental Large Cap Value ETF A $ 0.38 % A Expenses for the full reporting period would be higher.
Expenses Paid, Amount	$ 17
Expense Ratio, Percent	0.38%
Expenses Short Period Footnote [Text Block]	Expenses for the full reporting period would be higher.
Average Annual Return [Table Text Block]
Net Assets	$ 1,601,511
Holdings Count | shares	114
Advisory Fees Paid, Amount	$ 2,281
Investment Company Portfolio Turnover	29%
Additional Fund Statistics [Text Block]	Key Fund Statistics (as of July 31, 2024) KEY FACTS Fund Size $ Number of Holdings 114 Total Advisory Fee $ Portfolio Turnover A 29 % A Amount not annualized
Holdings [Text Block]	MARKET SECTORS (% of Fund's net assets)     Financials 23.7   Industrials 14.2   Health Care 13.4   Energy 10.1   Information Technology 9.3   Consumer Staples 7.5   Utilities 5.5   Consumer Discretionary 4.5   Real Estate 4.3   Communication Services 3.7   Materials 3.3     Common Stocks 99.5 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets) United States 94.8 Canada 2.4 United Kingdom 1.1 Taiwan 0.9 Spain 0.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)
Largest Holdings [Text Block]	TOP HOLDINGS (% of Fund's net assets)     Exxon Mobil Corp 4.6     JPMorgan Chase & Co 4.5     Cisco Systems Inc 3.6     Wells Fargo & Co 3.1     Hartford Financial Services Group Inc/The 2.6     Bank of America Corp 2.3     Comcast Corp Class A 2.3     UnitedHealth Group Inc 2.2     Travelers Cos Inc/The 2.2     Shell PLC ADR 2.1       29.5

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)

12 Months Ended

48 Months Ended

60 Months Ended

72 Months Ended

108 Months Ended

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2024

Jul. 31, 2023

Jul. 31, 2022

Jul. 31, 2021

Jul. 31, 2020

Jul. 31, 2019

Jul. 31, 2018

Jul. 31, 2017

Jul. 31, 2016

C000227888_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.07%

C000227888_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

8.78%

C000218331_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000218331_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

16.41%

C000171934_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171934_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171934_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000223346_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.15%

C000223346_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.80%

C000218330_0_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.15%

C000218330_0_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

16.84%

C000227887_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.07%

C000227887_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

8.78%

C000215140_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000215140_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.67%

C000223345_0_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.15%

C000223345_0_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.80%

C000223347_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.07%

C000223347_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11%

C000218329_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000218329_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

16.41%

C000218700_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000218700_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.48%

C000223344_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000223344_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.57%

C000171933_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171933_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171933_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000171930_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171930_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171930_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000171935_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171935_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171935_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000171932_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171932_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171932_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000209803_0_LG_BBIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Dow Jones U.S. Total Stock Market Index℠</span>" id="sjs-E116">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Dow Jones U.S. Total Stock Market Index℠&lt;/span>

C000209803_0_BBIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

$ 10,000

C000209803_0_BBIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

$ 10,689

C000209803_0_BBIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

$ 11,843

C000209803_0_BBIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

$ 16,453

C000209803_0_BBIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

$ 15,173

C000209803_0_BBIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 17,088

$ 17,088

$ 17,088

$ 17,088

$ 17,088

C000209803_2_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.10%

C000209803_2_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.13%

C000209803_2_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.33%

C000171931_1_BBIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.50%

C000171931_1_BBIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.59%

C000171931_1_BBIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.37%

C000227888_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Women's Leadership ETF</span>" id="sjs-C155">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Women's Leadership ETF&lt;/span>

C000227888_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227888_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,253

C000227888_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

8,803

C000227888_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 9,945

$ 9,945

$ 9,945

9,945

9,945

C000227888_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

MSCI USA Women's Leadership Index</span>" id="sjs-C170">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI USA Women's Leadership Index&lt;/span>

C000227888_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227888_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,293

C000227888_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

8,844

C000227888_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

9,658

$ 9,658

9,658

9,658

9,658

C000227888_LG_2_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 3000® Index</span>" id="sjs-C185">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 3000® Index&lt;/span>

C000227888_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227888_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,297

C000227888_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,540

C000227888_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,746

$ 10,746

$ 10,746

10,746

10,746

C000227888_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

15.82%

C000227888_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.62%

C000227888_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

16.09%

C000227888_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.79%

C000227888_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.28%

C000227888_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

2.33%

C000218331_LG_ClassMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Blue Chip Value ETF</span>" id="sjs-D218">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Blue Chip Value ETF&lt;/span>

C000218331_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218331_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,123

C000218331_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,459

C000218331_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,642

C000218331_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,426

15,426

$ 15,426

15,426

15,426

C000218331_LG_1_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Value Index</span>" id="sjs-D236">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Value Index&lt;/span>

C000218331_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218331_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,170

C000218331_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,169

C000218331_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,967

C000218331_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,124

15,124

$ 15,124

15,124

15,124

C000218331_LG_2_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-D254">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000218331_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218331_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,678

C000218331_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,731

C000218331_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,719

C000218331_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,496

15,496

$ 15,496

15,496

$ 15,496

C000218331_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.22%

C000218331_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.84%

C000218331_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.33%

C000218331_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.97%

C000218331_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.80%

C000218331_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.17%

C000171934_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Quality Factor ETF</span>" id="sjs-F290">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Quality Factor ETF&lt;/span>

C000171934_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

$ 10,000

C000171934_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

$ 11,613

C000171934_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

$ 13,581

C000171934_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,551

C000171934_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,044

C000171934_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

21,820

C000171934_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

20,776

C000171934_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

22,948

C000171934_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 27,615

27,615

27,615

27,615

$ 27,615

C000171934_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity U.S. Quality Factor Index℠</span>" id="sjs-F320">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity U.S. Quality Factor Index℠&lt;/span>

C000171934_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171934_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,648

C000171934_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,664

C000171934_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,681

C000171934_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,233

C000171934_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,144

C000171934_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,143

C000171934_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,416

C000171934_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

28,228

28,228

28,228

28,228

$ 28,228

C000171934_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F350">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171934_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171934_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,635

C000171934_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,519

C000171934_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,600

C000171934_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,357

C000171934_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,568

C000171934_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,017

C000171934_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,739

C000171934_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

$ 28,843

$ 28,843

28,843

$ 28,843

C000171934_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

20.34%

C000171934_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.67%

C000171934_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.74%

C000171934_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

20.47%

C000171934_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.67%

C000171934_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.79%

C000171934_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

20.55%

C000171934_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.97%

C000171934_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.06%

C000223346_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Real Estate Investment ETF</span>" id="sjs-C407">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Real Estate Investment ETF&lt;/span>

C000223346_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223346_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,517

C000223346_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,307

C000223346_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,086

$ 11,086

$ 11,086

11,086

11,086

C000223346_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

MSCI US IMI Real Estate 25/50 Index</span>" id="sjs-C422">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI US IMI Real Estate 25/50 Index&lt;/span>

C000223346_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223346_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,325

C000223346_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,803

C000223346_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

10,663

$ 10,663

10,663

10,663

10,663

C000223346_LG_2_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C437">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000223346_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223346_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,570

C000223346_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,033

C000223346_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,469

$ 12,469

$ 12,469

12,469

12,469

C000223346_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.20%

C000223346_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

5.90%

C000223346_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.47%

C000223346_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

5.93%

C000223346_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

10.73%

C000223346_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.87%

C000218330_LG_ClassMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Fundamental Large Cap Core ETF</span>" id="sjs-D470">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Fundamental Large Cap Core ETF&lt;/span>

C000218330_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218330_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,195

C000218330_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,786

C000218330_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,933

C000218330_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 18,122

18,122

$ 18,122

18,122

18,122

C000218330_LG_1_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-D488">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000218330_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218330_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,645

C000218330_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,525

C000218330_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,851

C000218330_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,654

$ 15,654

$ 15,654

15,654

15,654

C000218330_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

27.19%

C000218330_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

22.20%

C000218330_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

27.46%

C000218330_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

21.42%

C000227887_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Sustainable U.S. Equity ETF</span>" id="sjs-C518">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Sustainable U.S. Equity ETF&lt;/span>

C000227887_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227887_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,399

C000227887_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,670

C000227887_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,048

$ 11,048

11,048

11,048

11,048

C000227887_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

MSCI USA IMI ESG Leaders Index </span>" id="sjs-C533">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI USA IMI ESG Leaders Index &lt;/span>

C000227887_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227887_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,375

C000227887_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,716

C000227887_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

10,983

$ 10,983

10,983

10,983

10,983

C000227887_LG_2_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 3000® Index</span>" id="sjs-C548">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 3000® Index&lt;/span>

C000227887_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000227887_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,297

C000227887_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,540

C000227887_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 10,746

$ 10,746

10,746

$ 10,746

10,746

C000227887_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.14%

C000227887_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

9.76%

C000227887_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.39%

C000227887_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

9.99%

C000227887_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

22.55%

C000227887_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

9.96%

C000215140_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Stocks for Inflation ETF</span>" id="sjs-E581">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Stocks for Inflation ETF&lt;/span>

C000215140_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000215140_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

9,812

C000215140_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,930

C000215140_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,580

C000215140_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,635

C000215140_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 18,380

18,380

18,380

$ 18,380

18,380

C000215140_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Stocks for Inflation Factor Index℠</span>" id="sjs-E602">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Stocks for Inflation Factor Index℠&lt;/span>

C000215140_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000215140_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

9,844

C000215140_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,016

C000215140_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,712

C000215140_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,821

C000215140_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

18,629

18,629

18,629

$ 18,629

18,629

C000215140_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-E623">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000215140_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000215140_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,850

C000215140_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

14,969

C000215140_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

13,941

C000215140_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

15,746

C000215140_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 19,132

$ 19,132

19,132

$ 19,132

19,132

C000215140_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

25.59%

C000215140_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.70%

C000215140_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

25.56%

C000215140_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.64%

C000215140_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

25.69%

C000215140_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

14.03%

C000223345_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Magellan℠ ETF</span>" id="sjs-C662">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Magellan℠ ETF&lt;/span>

C000223345_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223345_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,565

C000223345_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,466

C000223345_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,221

$ 11,221

11,221

11,221

11,221

C000223345_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

S&P 500® Index</span>" id="sjs-C677">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&amp;P 500® Index&lt;/span>

C000223345_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223345_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,570

C000223345_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

11,033

C000223345_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,469

$ 12,469

12,469

12,469

12,469

C000223345_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

32.40%

C000223345_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

12%

C000223345_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

32.45%

C000223345_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.70%

C000223347_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Fundamental Small-Mid Cap ETF</span>" id="sjs-C704">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Fundamental Small-Mid Cap ETF&lt;/span>

C000223347_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223347_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,436

C000223347_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,534

C000223347_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,484

$ 11,484

11,484

11,484

11,484

C000223347_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 2500™ Index</span>" id="sjs-C719">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 2500™ Index&lt;/span>

C000223347_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223347_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,827

C000223347_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,607

C000223347_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

10,380

$ 10,380

10,380

10,380

10,380

C000223347_LG_2_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 3000® Index</span>" id="sjs-C734">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 3000® Index&lt;/span>

C000223347_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223347_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,395

C000223347_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,557

C000223347_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 11,893

$ 11,893

$ 11,893

11,893

11,893

C000223347_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

19.70%

C000223347_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

9.54%

C000223347_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

20.03%

C000223347_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

8.92%

C000223347_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.06%

C000223347_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

4.69%

C000218329_LG_ClassMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Blue Chip Growth ETF</span>" id="sjs-D767">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Blue Chip Growth ETF&lt;/span>

C000218329_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218329_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,368

C000218329_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

16,387

C000218329_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,467

C000218329_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,639

15,639

$ 15,639

15,639

15,639

C000218329_LG_1_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Growth Index</span>" id="sjs-D785">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Growth Index&lt;/span>

C000218329_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218329_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

11,108

C000218329_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

15,182

C000218329_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,371

C000218329_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,685

15,685

$ 15,685

15,685

15,685

C000218329_LG_2_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-D803">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000218329_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218329_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,678

C000218329_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,731

C000218329_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,719

C000218329_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 15,496

15,496

$ 15,496

15,496

15,496

C000218329_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

31.18%

C000218329_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

18.83%

C000218329_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

31.23%

C000218329_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

18.93%

C000218329_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

26.94%

C000218329_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

17.98%

C000218700_LG_ClassMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® U.S. Multifactor ETF</span>" id="sjs-D839">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® U.S. Multifactor ETF&lt;/span>

C000218700_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218700_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

12,994

C000218700_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,651

C000218700_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,015

C000218700_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 17,303

17,303

$ 17,303

17,303

17,303

C000218700_LG_1_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity U.S. Multifactor Index℠</span>" id="sjs-D857">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity U.S. Multifactor Index℠&lt;/span>

C000218700_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218700_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,032

C000218700_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,726

C000218700_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

14,143

C000218700_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

17,465

17,465

$ 17,465

17,465

17,465

C000218700_LG_2_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-D875">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000218700_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,000

C000218700_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

13,219

C000218700_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

12,310

C000218700_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,904

C000218700_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 16,894

$ 16,894

$ 16,894

16,894

16,894

C000218700_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

23.46%

C000218700_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

15.19%

C000218700_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

23.66%

C000218700_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

15.64%

C000218700_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

23.49%

C000218700_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

15.47%

C000223344_LG_ClassMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Fundamental Large Cap Growth ETF</span>" id="sjs-C911">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Fundamental Large Cap Growth ETF&lt;/span>

C000223344_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223344_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

10,582

C000223344_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

7,245

C000223344_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 8,970

$ 8,970

8,970

8,970

8,970

C000223344_LG_1_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Growth Index</span>" id="sjs-C926">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Growth Index&lt;/span>

C000223344_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223344_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,336

C000223344_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

9,984

C000223344_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

11,712

$ 11,712

11,712

11,712

11,712

C000223344_LG_2_AdditionalIndexMember_4YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-C941">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000223344_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,000

C000223344_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

11,471

C000223344_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

10,683

C000223344_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 12,066

$ 12,066

12,066

12,066

$ 12,066

C000223344_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

28.10%

C000223344_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

4.06%

C000223344_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

28.29%

C000223344_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

3.36%

C000223344_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

26.94%

C000223344_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.02%

C000171933_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Momentum Factor ETF</span>" id="sjs-F974">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Momentum Factor ETF&lt;/span>

C000171933_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171933_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,408

C000171933_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,543

C000171933_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,614

C000171933_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,231

C000171933_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

20,708

C000171933_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

19,217

C000171933_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

20,950

C000171933_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 27,012

27,012

27,012

27,012

$ 27,012

C000171933_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity U.S. Momentum Factor Index℠</span>" id="sjs-F1004">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity U.S. Momentum Factor Index℠&lt;/span>

C000171933_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171933_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,443

C000171933_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,633

C000171933_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,749

C000171933_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,427

C000171933_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

21,025

C000171933_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

19,571

C000171933_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

21,399

C000171933_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

27,651

27,651

27,651

27,651

$ 27,651

C000171933_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F1034">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171933_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171933_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,635

C000171933_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,519

C000171933_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,600

C000171933_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,357

C000171933_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,568

C000171933_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,017

C000171933_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,739

C000171933_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

28,843

$ 28,843

28,843

$ 28,843

C000171933_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

28.94%

C000171933_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.07%

C000171933_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.43%

C000171933_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

29.08%

C000171933_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.02%

C000171933_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.53%

C000171933_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

29.22%

C000171933_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.39%

C000171933_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.76%

C000171930_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® High Dividend ETF</span>" id="sjs-F1091">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® High Dividend ETF&lt;/span>

C000171930_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171930_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,961

C000171930_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,739

C000171930_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,269

C000171930_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,667

C000171930_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

18,040

C000171930_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

18,839

C000171930_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

21,140

C000171930_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 25,581

25,581

$ 25,581

25,581

$ 25,581

C000171930_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity High Dividend Index℠</span>" id="sjs-F1121">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity High Dividend Index℠&lt;/span>

C000171930_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171930_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

10,996

C000171930_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

12,826

C000171930_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,410

C000171930_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

12,818

C000171930_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

18,315

C000171930_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

19,188

C000171930_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

21,596

C000171930_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

26,186

26,186

26,186

26,186

$ 26,186

C000171930_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F1151">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171930_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171930_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,635

C000171930_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,519

C000171930_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,600

C000171930_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,357

C000171930_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,568

C000171930_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,017

C000171930_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,739

C000171930_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

28,843

$ 28,843

28,843

$ 28,843

C000171930_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.01%

C000171930_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.03%

C000171930_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

12.65%

C000171930_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.32%

C000171930_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.01%

C000171930_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.78%

C000171930_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

21.25%

C000171930_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.32%

C000171930_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.98%

C000171935_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Value Factor ETF</span>" id="sjs-F1208">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Value Factor ETF&lt;/span>

C000171935_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171935_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,866

C000171935_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,777

C000171935_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,322

C000171935_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,769

C000171935_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

21,055

C000171935_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

20,241

C000171935_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

22,736

C000171935_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 26,698

26,698

$ 26,698

26,698

$ 26,698

C000171935_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity U.S. Value Factor Index℠</span>" id="sjs-F1238">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity U.S. Value Factor Index℠&lt;/span>

C000171935_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171935_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,901

C000171935_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,865

C000171935_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,454

C000171935_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,942

C000171935_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

21,371

C000171935_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

20,600

C000171935_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,204

C000171935_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

27,287

27,287

27,287

27,287

$ 27,287

C000171935_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F1268">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171935_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171935_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,635

C000171935_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,519

C000171935_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,600

C000171935_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,357

C000171935_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,568

C000171935_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,017

C000171935_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,739

C000171935_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

28,843

$ 28,843

28,843

$ 28,843

C000171935_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

17.43%

C000171935_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.27%

C000171935_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

13.26%

C000171935_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

17.56%

C000171935_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.24%

C000171935_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.35%

C000171935_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

17.60%

C000171935_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

13.55%

C000171935_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.57%

C000171932_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Low Volatility Factor ETF</span>" id="sjs-F1325">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Low Volatility Factor ETF&lt;/span>

C000171932_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171932_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,295

C000171932_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,203

C000171932_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

15,077

C000171932_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,176

C000171932_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

20,851

C000171932_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

20,618

C000171932_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

22,465

C000171932_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 26,124

26,124

$ 26,124

26,124

$ 26,124

C000171932_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity U.S. Low Volatility Factor Index℠</span>" id="sjs-F1355">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity U.S. Low Volatility Factor Index℠&lt;/span>

C000171932_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171932_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,330

C000171932_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,289

C000171932_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

15,181

C000171932_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,329

C000171932_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

21,107

C000171932_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

20,933

C000171932_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

22,873

C000171932_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

26,642

26,642

26,642

26,642

$ 26,642

C000171932_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F1385">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171932_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171932_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,635

C000171932_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,519

C000171932_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,600

C000171932_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

16,357

C000171932_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

22,568

C000171932_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

21,017

C000171932_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

23,739

C000171932_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

28,843

$ 28,843

$ 28,843

$ 28,843

C000171932_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

16.29%

C000171932_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.62%

C000171932_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

12.95%

C000171932_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

16.31%

C000171932_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.62%

C000171932_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.09%

C000171932_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

16.48%

C000171932_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.91%

C000171932_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

13.23%

C000209803_LG_ClassMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Small-Mid Multifactor ETF</span>" id="sjs-E1442">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Small-Mid Multifactor ETF&lt;/span>

C000209803_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000209803_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,335

C000209803_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

9,829

C000209803_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,174

C000209803_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,841

C000209803_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,937

14,937

$ 14,937

$ 14,937

14,937

C000209803_LG_1_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Small-Mid Multifactor Index℠</span>" id="sjs-E1463">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Small-Mid Multifactor Index℠&lt;/span>

C000209803_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000209803_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,350

C000209803_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

9,866

C000209803_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

14,281

C000209803_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

13,993

C000209803_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

15,144

15,144

15,144

$ 15,144

15,144

C000209803_LG_2_AdditionalIndexMember_6YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Dow Jones U.S. Completion Total Stock Market Index℠</span>" id="sjs-E1484">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Dow Jones U.S. Completion Total Stock Market Index℠&lt;/span>

C000209803_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

10,000

C000209803_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

10,374

C000209803_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

10,905

C000209803_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

16,466

C000209803_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

12,868

C000209803_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 14,212

14,212

$ 14,212

$ 14,212

$ 14,212

C000209803_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

19.10%

C000209803_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.47%

C000209803_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

11.19%

C000209803_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

19.39%

C000209803_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.49%

C000209803_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.20%

C000209803_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

19.37%

C000209803_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

11.80%

C000209803_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

11.52%

C000209803_1_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

14.96%

C000209803_1_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

9.51%

C000209803_1_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

9.46%

C000171931_LG_ClassMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity® Dividend ETF for Rising Rates</span>" id="sjs-F1541">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Dividend ETF for Rising Rates&lt;/span>

C000171931_ClassMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171931_ClassMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,485

C000171931_ClassMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,098

C000171931_ClassMember_AsOf_2019Member

Account Value [Line Items]

Account Value

13,896

C000171931_ClassMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,154

C000171931_ClassMember_AsOf_2021Member

Account Value [Line Items]

Account Value

19,471

C000171931_ClassMember_AsOf_2022Member

Account Value [Line Items]

Account Value

19,264

C000171931_ClassMember_AsOf_2023Member

Account Value [Line Items]

Account Value

20,838

C000171931_ClassMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 24,558

24,558

$ 24,558

24,558

$ 24,558

C000171931_LG_1_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Fidelity Dividend Index for Rising Rates℠</span>" id="sjs-F1571">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Dividend Index for Rising Rates℠&lt;/span>

C000171931_1_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

10,000

C000171931_1_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

11,526

C000171931_1_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

13,195

C000171931_1_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

14,045

C000171931_1_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

14,341

C000171931_1_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

19,793

C000171931_1_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

19,650

C000171931_1_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

21,314

C000171931_1_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

25,156

25,156

25,156

25,156

$ 25,156

C000171931_LG_2_AdditionalIndexMember_9YRMember

Account Value [Line Items]

Line Graph and Table Measure Name

Russell 1000® Index</span>" id="sjs-F1601">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Russell 1000® Index&lt;/span>

C000171931_2_AdditionalIndexMember_AsOf_2016Member

Account Value [Line Items]

Account Value

$ 10,000

C000171931_2_AdditionalIndexMember_AsOf_2017Member

Account Value [Line Items]

Account Value

$ 11,635

C000171931_2_AdditionalIndexMember_AsOf_2018Member

Account Value [Line Items]

Account Value

$ 13,519

C000171931_2_AdditionalIndexMember_AsOf_2019Member

Account Value [Line Items]

Account Value

$ 14,600

C000171931_2_AdditionalIndexMember_AsOf_2020Member

Account Value [Line Items]

Account Value

$ 16,357

C000171931_2_AdditionalIndexMember_AsOf_2021Member

Account Value [Line Items]

Account Value

$ 22,568

C000171931_2_AdditionalIndexMember_AsOf_2022Member

Account Value [Line Items]

Account Value

$ 21,017

C000171931_2_AdditionalIndexMember_AsOf_2023Member

Account Value [Line Items]

Account Value

$ 23,739

C000171931_2_AdditionalIndexMember_AsOf_2024Member

Account Value [Line Items]

Account Value

$ 28,843

$ 28,843

$ 28,843

$ 28,843

$ 28,843

C000171931_NoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

17.85%

C000171931_NoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

12.06%

C000171931_NoLoadClassMember_2023-08-01_2024-07-31Member

Account Value [Line Items]

Average Annual Return, Percent

12.06%

C000171931_ETFNoLoadClassMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

17.95%

C000171931_ETFNoLoadClassMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

12.03%

C000171931_ETFNoLoadClassMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.11%

C000171931_0_AdditionalIndexMember_1YRMember

Account Value [Line Items]

Average Annual Return, Percent

18.03%

C000171931_0_AdditionalIndexMember_5YRMember

Account Value [Line Items]

Average Annual Return, Percent

12.36%

C000171931_0_AdditionalIndexMember_LOCMember

Account Value [Line Items]

Average Annual Return, Percent

12.41%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jul. 31, 2024
Fidelity Women's Leadership ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Women's Leadership ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Fidelity Women's Leadership ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Fidelity Women's Leadership ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Women's Leadership ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity Women's Leadership ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Women's Leadership ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Women's Leadership ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Women's Leadership ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Women's Leadership ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Women's Leadership ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	12.50%
Fidelity Women's Leadership ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	29.10%
Fidelity Women's Leadership ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Women's Leadership ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Women's Leadership ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Fidelity Women's Leadership ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Women's Leadership ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Fidelity Women's Leadership ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Fidelity Women's Leadership ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity Women's Leadership ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Women's Leadership ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Women's Leadership ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	95.90%
Fidelity Women's Leadership ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Women's Leadership ETF | China
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Women's Leadership ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Women's Leadership ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.30%
Fidelity Women's Leadership ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.70%
Fidelity Blue Chip Value ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Blue Chip Value ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Fidelity Blue Chip Value ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Blue Chip Value ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Blue Chip Value ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Blue Chip Value ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Blue Chip Value ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity Blue Chip Value ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Blue Chip Value ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Blue Chip Value ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Blue Chip Value ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	24.80%
Fidelity Blue Chip Value ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Blue Chip Value ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	17%
Fidelity Blue Chip Value ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Blue Chip Value ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Fidelity Blue Chip Value ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Blue Chip Value ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Blue Chip Value ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Blue Chip Value ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Fidelity Blue Chip Value ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Blue Chip Value ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Blue Chip Value ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	94%
Fidelity Blue Chip Value ETF | China
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Blue Chip Value ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Blue Chip Value ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Blue Chip Value ETF | Norway
Holdings [Line Items]
Percent of Net Asset Value	0.70%
Fidelity Blue Chip Value ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	98.40%
Fidelity Blue Chip Value ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Quality Factor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Quality Factor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Quality Factor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Quality Factor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Quality Factor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Quality Factor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Quality Factor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Quality Factor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Quality Factor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Quality Factor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Quality Factor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	13.10%
Fidelity Quality Factor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	31.10%
Fidelity Quality Factor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity Quality Factor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Quality Factor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.10%
Fidelity Quality Factor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Quality Factor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Fidelity Quality Factor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Quality Factor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.50%
Fidelity Quality Factor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Quality Factor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Quality Factor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	100%
Fidelity Quality Factor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.90%
Fidelity Quality Factor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Real Estate Investment ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	11%
Fidelity Real Estate Investment ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	9.10%
Fidelity Real Estate Investment ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Real Estate Investment ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Real Estate Investment ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Fidelity Real Estate Investment ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Real Estate Investment ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Real Estate Investment ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Fidelity Real Estate Investment ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Real Estate Investment ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Real Estate Investment ETF | TI0Member
Holdings [Line Items]
Percent of Net Asset Value	38.40%
Fidelity Real Estate Investment ETF | TI1Member
Holdings [Line Items]
Percent of Net Asset Value	17.10%
Fidelity Real Estate Investment ETF | TI2Member
Holdings [Line Items]
Percent of Net Asset Value	15%
Fidelity Real Estate Investment ETF | TI3Member
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Fidelity Real Estate Investment ETF | TI4Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Real Estate Investment ETF | TI5Member
Holdings [Line Items]
Percent of Net Asset Value	6.10%
Fidelity Real Estate Investment ETF | TI6Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Real Estate Investment ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	100%
Fidelity Real Estate Investment ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	98.90%
Fidelity Real Estate Investment ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Large Cap Core ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.60%
Fidelity Fundamental Large Cap Core ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity Fundamental Large Cap Core ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Fundamental Large Cap Core ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Fundamental Large Cap Core ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Fidelity Fundamental Large Cap Core ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Fundamental Large Cap Core ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Fundamental Large Cap Core ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Fundamental Large Cap Core ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Core ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Core ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	12.50%
Fidelity Fundamental Large Cap Core ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	29.30%
Fidelity Fundamental Large Cap Core ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12.60%
Fidelity Fundamental Large Cap Core ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Large Cap Core ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	11.70%
Fidelity Fundamental Large Cap Core ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Fundamental Large Cap Core ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Fundamental Large Cap Core ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Fundamental Large Cap Core ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Fidelity Fundamental Large Cap Core ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Fundamental Large Cap Core ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Fundamental Large Cap Core ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	94.70%
Fidelity Fundamental Large Cap Core ETF | China
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Core ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Fundamental Large Cap Core ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Fundamental Large Cap Core ETF | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Fundamental Large Cap Core ETF | Germany
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Large Cap Core ETF | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Fundamental Large Cap Core ETF | Denmark
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Core ETF | Zambia
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Core ETF | OtherMember
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Core ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.40%
Fidelity Fundamental Large Cap Core ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Sustainable U.S. Equity ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Fidelity Sustainable U.S. Equity ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	6%
Fidelity Sustainable U.S. Equity ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	5.10%
Fidelity Sustainable U.S. Equity ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	4.20%
Fidelity Sustainable U.S. Equity ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Sustainable U.S. Equity ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Sustainable U.S. Equity ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Sustainable U.S. Equity ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Sustainable U.S. Equity ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Sustainable U.S. Equity ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Sustainable U.S. Equity ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	11.30%
Fidelity Sustainable U.S. Equity ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Fidelity Sustainable U.S. Equity ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Fidelity Sustainable U.S. Equity ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Sustainable U.S. Equity ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.60%
Fidelity Sustainable U.S. Equity ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Sustainable U.S. Equity ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.30%
Fidelity Sustainable U.S. Equity ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity Sustainable U.S. Equity ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Fidelity Sustainable U.S. Equity ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity Sustainable U.S. Equity ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Sustainable U.S. Equity ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	97.60%
Fidelity Sustainable U.S. Equity ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Sustainable U.S. Equity ETF | China
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Sustainable U.S. Equity ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	94.30%
Fidelity Sustainable U.S. Equity ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity Stocks for Inflation ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Fidelity Stocks for Inflation ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Fidelity Stocks for Inflation ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	5%
Fidelity Stocks for Inflation ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Stocks for Inflation ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Stocks for Inflation ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Stocks for Inflation ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Stocks for Inflation ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Stocks for Inflation ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Stocks for Inflation ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Stocks for Inflation ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Stocks for Inflation ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	25%
Fidelity Stocks for Inflation ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	17.20%
Fidelity Stocks for Inflation ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Stocks for Inflation ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Stocks for Inflation ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity Stocks for Inflation ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Stocks for Inflation ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Stocks for Inflation ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Stocks for Inflation ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Fidelity Stocks for Inflation ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity Stocks for Inflation ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	99.60%
Fidelity Stocks for Inflation ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Stocks for Inflation ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Stocks for Inflation ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Magellan ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.90%
Fidelity Magellan ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Fidelity Magellan ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Fidelity Magellan ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Magellan ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Magellan ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity Magellan ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Magellan ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Magellan ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Magellan ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Magellan ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	10.90%
Fidelity Magellan ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	35.80%
Fidelity Magellan ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Fidelity Magellan ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	15.90%
Fidelity Magellan ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity Magellan ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.60%
Fidelity Magellan ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Magellan ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Magellan ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Magellan ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	96.80%
Fidelity Magellan ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Magellan ETF | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Magellan ETF | Denmark
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Magellan ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	98.80%
Fidelity Magellan ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Fundamental Small-Mid Cap ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity Fundamental Small-Mid Cap ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Fundamental Small-Mid Cap ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Fundamental Small-Mid Cap ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Fundamental Small-Mid Cap ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Fundamental Small-Mid Cap ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Fundamental Small-Mid Cap ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Fundamental Small-Mid Cap ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.30%
Fidelity Fundamental Small-Mid Cap ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Fundamental Small-Mid Cap ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Fundamental Small-Mid Cap ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	16.30%
Fidelity Fundamental Small-Mid Cap ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	11.40%
Fidelity Fundamental Small-Mid Cap ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	10.60%
Fidelity Fundamental Small-Mid Cap ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Fundamental Small-Mid Cap ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	22.50%
Fidelity Fundamental Small-Mid Cap ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Fundamental Small-Mid Cap ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	13.70%
Fidelity Fundamental Small-Mid Cap ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Fundamental Small-Mid Cap ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Fundamental Small-Mid Cap ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Fundamental Small-Mid Cap ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Fundamental Small-Mid Cap ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	91.80%
Fidelity Fundamental Small-Mid Cap ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Fidelity Fundamental Small-Mid Cap ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Fundamental Small-Mid Cap ETF | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Fundamental Small-Mid Cap ETF | Thailand
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Small-Mid Cap ETF | Israel
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Fundamental Small-Mid Cap ETF | Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Fundamental Small-Mid Cap ETF | Japan
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Fundamental Small-Mid Cap ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99%
Fidelity Fundamental Small-Mid Cap ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity Blue Chip Growth ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	13.70%
Fidelity Blue Chip Growth ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.90%
Fidelity Blue Chip Growth ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	9.10%
Fidelity Blue Chip Growth ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Blue Chip Growth ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Fidelity Blue Chip Growth ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.90%
Fidelity Blue Chip Growth ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	3%
Fidelity Blue Chip Growth ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Blue Chip Growth ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Blue Chip Growth ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.30%
Fidelity Blue Chip Growth ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Blue Chip Growth ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	44.30%
Fidelity Blue Chip Growth ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Blue Chip Growth ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Blue Chip Growth ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Blue Chip Growth ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	0.70%
Fidelity Blue Chip Growth ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	19.90%
Fidelity Blue Chip Growth ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.30%
Fidelity Blue Chip Growth ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	16%
Fidelity Blue Chip Growth ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Blue Chip Growth ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	95.60%
Fidelity Blue Chip Growth ETF | China
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Blue Chip Growth ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Blue Chip Growth ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Blue Chip Growth ETF | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Blue Chip Growth ETF | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	0.80%
Fidelity Blue Chip Growth ETF | Denmark
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Blue Chip Growth ETF | OtherMember
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Blue Chip Growth ETF | Israel
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Blue Chip Growth ETF | Singapore
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Blue Chip Growth ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.90%
Fidelity Blue Chip Growth ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity U.S. Multifactor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	6.50%
Fidelity U.S. Multifactor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Fidelity U.S. Multifactor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	6%
Fidelity U.S. Multifactor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Fidelity U.S. Multifactor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity U.S. Multifactor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity U.S. Multifactor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity U.S. Multifactor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity U.S. Multifactor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity U.S. Multifactor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity U.S. Multifactor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Fidelity U.S. Multifactor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	29.90%
Fidelity U.S. Multifactor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12%
Fidelity U.S. Multifactor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity U.S. Multifactor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.40%
Fidelity U.S. Multifactor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity U.S. Multifactor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity U.S. Multifactor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.60%
Fidelity U.S. Multifactor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity U.S. Multifactor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity U.S. Multifactor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity U.S. Multifactor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	99.40%
Fidelity U.S. Multifactor ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity U.S. Multifactor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity U.S. Multifactor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Fundamental Large Cap Growth ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	13%
Fidelity Fundamental Large Cap Growth ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Fidelity Fundamental Large Cap Growth ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Fidelity Fundamental Large Cap Growth ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Fundamental Large Cap Growth ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Fundamental Large Cap Growth ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Fundamental Large Cap Growth ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Fidelity Fundamental Large Cap Growth ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Growth ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Growth ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Fundamental Large Cap Growth ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Fidelity Fundamental Large Cap Growth ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	46.10%
Fidelity Fundamental Large Cap Growth ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	9.60%
Fidelity Fundamental Large Cap Growth ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Fundamental Large Cap Growth ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Fidelity Fundamental Large Cap Growth ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Fundamental Large Cap Growth ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Fidelity Fundamental Large Cap Growth ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Growth ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	15.50%
Fidelity Fundamental Large Cap Growth ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Large Cap Growth ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Growth ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	92.40%
Fidelity Fundamental Large Cap Growth ETF | China
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Fundamental Large Cap Growth ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Growth ETF | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Fundamental Large Cap Growth ETF | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Fundamental Large Cap Growth ETF | Denmark
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Fundamental Large Cap Growth ETF | OtherMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Fundamental Large Cap Growth ETF | Singapore
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Fundamental Large Cap Growth ETF | France
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Fundamental Large Cap Growth ETF | India
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Growth ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Fundamental Large Cap Growth ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Momentum Factor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Fidelity Momentum Factor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	7%
Fidelity Momentum Factor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Momentum Factor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Fidelity Momentum Factor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Momentum Factor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Momentum Factor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Momentum Factor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Momentum Factor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity Momentum Factor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Momentum Factor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Fidelity Momentum Factor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	29.70%
Fidelity Momentum Factor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12.20%
Fidelity Momentum Factor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Momentum Factor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.40%
Fidelity Momentum Factor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Momentum Factor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Fidelity Momentum Factor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity Momentum Factor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Fidelity Momentum Factor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Momentum Factor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Momentum Factor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	99.60%
Fidelity Momentum Factor ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Momentum Factor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Momentum Factor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity High Dividend ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Fidelity High Dividend ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity High Dividend ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	5.40%
Fidelity High Dividend ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity High Dividend ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity High Dividend ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity High Dividend ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity High Dividend ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity High Dividend ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity High Dividend ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity High Dividend ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Fidelity High Dividend ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	25.20%
Fidelity High Dividend ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Fidelity High Dividend ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	9.10%
Fidelity High Dividend ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	16.20%
Fidelity High Dividend ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Fidelity High Dividend ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	12.10%
Fidelity High Dividend ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity High Dividend ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	10.30%
Fidelity High Dividend ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Fidelity High Dividend ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	91.40%
Fidelity High Dividend ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity High Dividend ETF | Germany
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity High Dividend ETF | Denmark
Holdings [Line Items]
Percent of Net Asset Value	1%
Fidelity High Dividend ETF | Japan
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity High Dividend ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity High Dividend ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Value Factor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Value Factor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Fidelity Value Factor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	4%
Fidelity Value Factor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Value Factor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Value Factor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Value Factor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Value Factor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Value Factor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Value Factor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Value Factor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	14.20%
Fidelity Value Factor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	28.40%
Fidelity Value Factor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Value Factor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Value Factor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Fidelity Value Factor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Value Factor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Fidelity Value Factor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Fidelity Value Factor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Fidelity Value Factor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Fidelity Value Factor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Value Factor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	98.80%
Fidelity Value Factor ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Value Factor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Value Factor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Low Volatility Factor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.80%
Fidelity Low Volatility Factor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Low Volatility Factor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	4.40%
Fidelity Low Volatility Factor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Low Volatility Factor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Low Volatility Factor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	1.70%
Fidelity Low Volatility Factor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Low Volatility Factor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Low Volatility Factor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Low Volatility Factor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Low Volatility Factor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	12.90%
Fidelity Low Volatility Factor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	29%
Fidelity Low Volatility Factor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	12.20%
Fidelity Low Volatility Factor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Low Volatility Factor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.60%
Fidelity Low Volatility Factor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Low Volatility Factor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Fidelity Low Volatility Factor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	6%
Fidelity Low Volatility Factor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Fidelity Low Volatility Factor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Low Volatility Factor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Low Volatility Factor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	98.70%
Fidelity Low Volatility Factor ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	1.30%
Fidelity Low Volatility Factor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Low Volatility Factor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Small-Mid Multifactor ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Small-Mid Multifactor ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Small-Mid Multifactor ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	16.90%
Fidelity Small-Mid Multifactor ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Small-Mid Multifactor ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	13%
Fidelity Small-Mid Multifactor ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	6.70%
Fidelity Small-Mid Multifactor ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	17.90%
Fidelity Small-Mid Multifactor ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.70%
Fidelity Small-Mid Multifactor ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	13.90%
Fidelity Small-Mid Multifactor ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.90%
Fidelity Small-Mid Multifactor ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Fidelity Small-Mid Multifactor ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Fidelity Small-Mid Multifactor ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Fidelity Small-Mid Multifactor ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	97.30%
Fidelity Small-Mid Multifactor ETF | Ireland
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Small-Mid Multifactor ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	0.50%
Fidelity Small-Mid Multifactor ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | OtherMember
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Fidelity Small-Mid Multifactor ETF | Thailand
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Small-Mid Multifactor ETF | Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	0.60%
Fidelity Small-Mid Multifactor ETF | Bermuda
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Small-Mid Multifactor ETF | Sweden
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Small-Mid Multifactor ETF | Monaco
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Small-Mid Multifactor ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.80%
Fidelity Small-Mid Multifactor ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.20%
Fidelity Dividend ETF for Rising Rates | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Dividend ETF for Rising Rates | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Fidelity Dividend ETF for Rising Rates | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	7.10%
Fidelity Dividend ETF for Rising Rates | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Dividend ETF for Rising Rates | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Dividend ETF for Rising Rates | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Dividend ETF for Rising Rates | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Fidelity Dividend ETF for Rising Rates | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	1.60%
Fidelity Dividend ETF for Rising Rates | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	1.50%
Fidelity Dividend ETF for Rising Rates | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	1.40%
Fidelity Dividend ETF for Rising Rates | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	13.60%
Fidelity Dividend ETF for Rising Rates | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	32.50%
Fidelity Dividend ETF for Rising Rates | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	11.60%
Fidelity Dividend ETF for Rising Rates | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Dividend ETF for Rising Rates | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9.20%
Fidelity Dividend ETF for Rising Rates | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Fidelity Dividend ETF for Rising Rates | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	9%
Fidelity Dividend ETF for Rising Rates | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Dividend ETF for Rising Rates | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	7.60%
Fidelity Dividend ETF for Rising Rates | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Fidelity Dividend ETF for Rising Rates | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Dividend ETF for Rising Rates | United States
Holdings [Line Items]
Percent of Net Asset Value	93.70%
Fidelity Dividend ETF for Rising Rates | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	2%
Fidelity Dividend ETF for Rising Rates | Germany
Holdings [Line Items]
Percent of Net Asset Value	1.80%
Fidelity Dividend ETF for Rising Rates | Denmark
Holdings [Line Items]
Percent of Net Asset Value	0.40%
Fidelity Dividend ETF for Rising Rates | Japan
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Dividend ETF for Rising Rates | Sweden
Holdings [Line Items]
Percent of Net Asset Value	1.20%
Fidelity Dividend ETF for Rising Rates | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.70%
Fidelity Dividend ETF for Rising Rates | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.30%
Fidelity Fundamental Large Cap Value ETF | TH0Member
Holdings [Line Items]
Percent of Net Asset Value	4.60%
Fidelity Fundamental Large Cap Value ETF | TH1Member
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Fidelity Fundamental Large Cap Value ETF | TH2Member
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Fidelity Fundamental Large Cap Value ETF | TH3Member
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Fidelity Fundamental Large Cap Value ETF | TH4Member
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Fidelity Fundamental Large Cap Value ETF | TH5Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Fundamental Large Cap Value ETF | TH6Member
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Fidelity Fundamental Large Cap Value ETF | TH7Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Fundamental Large Cap Value ETF | TH8Member
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Fidelity Fundamental Large Cap Value ETF | TH9Member
Holdings [Line Items]
Percent of Net Asset Value	2.10%
Fidelity Fundamental Large Cap Value ETF | MSFinancialsSectorMember
Holdings [Line Items]
Percent of Net Asset Value	23.70%
Fidelity Fundamental Large Cap Value ETF | Information Technology Member
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Fidelity Fundamental Large Cap Value ETF | Healthcare Sector
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Fidelity Fundamental Large Cap Value ETF | Real Estate Sector
Holdings [Line Items]
Percent of Net Asset Value	4.30%
Fidelity Fundamental Large Cap Value ETF | Industrial Sector Member
Holdings [Line Items]
Percent of Net Asset Value	14.20%
Fidelity Fundamental Large Cap Value ETF | Materials Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Fidelity Fundamental Large Cap Value ETF | Consumer Discretionary Sector Member
Holdings [Line Items]
Percent of Net Asset Value	4.50%
Fidelity Fundamental Large Cap Value ETF | Consumer Staples Sector Member
Holdings [Line Items]
Percent of Net Asset Value	7.50%
Fidelity Fundamental Large Cap Value ETF | Communications Sector Member
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Fidelity Fundamental Large Cap Value ETF | Energy Sector
Holdings [Line Items]
Percent of Net Asset Value	10.10%
Fidelity Fundamental Large Cap Value ETF | Utilities Sector Member
Holdings [Line Items]
Percent of Net Asset Value	5.50%
Fidelity Fundamental Large Cap Value ETF | United States
Holdings [Line Items]
Percent of Net Asset Value	94.80%
Fidelity Fundamental Large Cap Value ETF | Canada
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Fidelity Fundamental Large Cap Value ETF | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	1.10%
Fidelity Fundamental Large Cap Value ETF | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	0.90%
Fidelity Fundamental Large Cap Value ETF | Spain
Holdings [Line Items]
Percent of Net Asset Value	0.80%
Fidelity Fundamental Large Cap Value ETF | AACommonStocksMember
Holdings [Line Items]
Percent of Net Asset Value	99.50%
Fidelity Fundamental Large Cap Value ETF | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	0.50%