Shareholder Report | 12 Months Ended |
Sep. 30, 2024 USD ($) Holding |
Shareholder Report [Line Items] | |
Document Type | N-CSR |
Amendment Flag | false |
Registrant Name | AMG Funds I |
Entity Central Index Key | 0000882443 |
Entity Investment Company Type | N-1A |
Document Period End Date | Sep. 30, 2024 |
C000130199 [Member] | |
Shareholder Report [Line Items] | |
Fund Name | AMG Boston Common Global Impact Fund |
Class Name | Class I |
Trading Symbol | BRWIX |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG Boston Common Global Impact Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
Shareholder Report Annual or Semi-Annual | annual shareholder report |
Additional Information [Text Block] | You can find additional information about the Fund at https://wealth.amg.com/resources/order-literature |
Additional Information Phone Number | 800.548.4539 |
Additional Information Website | https://wealth.amg.com/resources/order-literature |
Expenses [Text Block] | Fund Expenses What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Boston Common Global Impact Fund $ 0.93 % |
Expenses Paid, Amount | $ 105 |
Expense Ratio, Percent | 0.93% |
Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Performance Overview • • Relative Performance • • • • Impact Investment Theme Performance and Positioning • • • |
Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
Line Graph [Table Text Block] | Fund Performance The performance line graph below shows the performance of a hypothetical $10,000 investment in the class of shares noted over a ten year period, as compared to the performance of a broad based index. The performance table below shows the average annual total returns of the class of shares noted for the past one-, five-, and ten-year periods ended as of September 30, 2024. It also shows the average total returns of a broad based index over the same periods. 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. GROWTH OF $10,000 |
Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 Year 5 Years 10 Years Class I 25.26 % 8.95 % 9.34 % MSCI ACWI Index 31.76 % 12.19 % 9.39 % |
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. |
Updated Performance Information Location [Text Block] | For updated Fund performance information, please visit: https://wealth.amg.com/ |
Net Assets | $ 588,806,344 |
Holdings Count | Holding | 66 |
Advisory Fees Paid, Amount | $ 3,991,425 |
Investment Company Portfolio Turnover | 37% |
Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ Total number of portfolio holdings 66 Net advisory fees paid $ Portfolio turnover rate as of the end of the reporting period 37 % |
Holdings [Text Block] | Graphical Representation of Holdings (as of September 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Schneider Electric SE (France) 2.6 % Westinghouse Air Brake Technologies Corp. (United States) 2.6 % BYD Co., Ltd., Class H (China) 2.5 % Taiwan Semiconductor Manufacturing Co., Ltd., Sponsored ADR (Taiwan) 2.5 % Chubb, Ltd. (Switzerland) 2.4 % Ecolab, Inc. (United States) 2.3 % RELX PLC (United Kingdom) 2.3 % Salesforce, Inc. (United States) 2.3 % Macquarie Group, Ltd. (Australia) 2.3 % Micron Technology, Inc. (United States) 2.2 % Top Ten as a Group 24.0 % Portfolio Breakdown Country Allocation |
Largest Holdings [Text Block] | Top Ten Holdings Schneider Electric SE (France) 2.6 % Westinghouse Air Brake Technologies Corp. (United States) 2.6 % BYD Co., Ltd., Class H (China) 2.5 % Taiwan Semiconductor Manufacturing Co., Ltd., Sponsored ADR (Taiwan) 2.5 % Chubb, Ltd. (Switzerland) 2.4 % Ecolab, Inc. (United States) 2.3 % RELX PLC (United Kingdom) 2.3 % Salesforce, Inc. (United States) 2.3 % Macquarie Group, Ltd. (Australia) 2.3 % Micron Technology, Inc. (United States) 2.2 % Top Ten as a Group 24.0 % |
C000130200 [Member] | |
Shareholder Report [Line Items] | |
Fund Name | AMG Veritas Global Real Return Fund |
Class Name | Class I |
Trading Symbol | BLUEX |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG Veritas Global Real Return Fund (the “Fund”) for the period of October 1, 2023 to September 30, 2024. |
Shareholder Report Annual or Semi-Annual | annual shareholder report |
Additional Information [Text Block] | You can find additional information about the Fund at https://wealth.amg.com/resources/order-literature |
Additional Information Phone Number | 800.548.4539 |
Additional Information Website | https://wealth.amg.com/resources/order-literature |
Expenses [Text Block] | Fund Expenses What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Veritas Global Real Return Fund $ 1.16 % |
Expenses Paid, Amount | $ 126 |
Expense Ratio, Percent | 1.16% |
Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Performance Overview • Relative Performance • Top Contributors and Detractors • • Positioning Update • • • |
Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of the Fund’s future performance. |
Line Graph [Table Text Block] | Fund Performance The performance line graph below shows the performance of a hypothetical $10,000 investment in the class of shares noted over a ten year period, as compared to the performance of (i) a broad based index and (ii) an additional index reflecting the market segment(s) in which the Fund invests. The performance table below shows the average annual total returns of the class of shares noted for the past one-, five-, and ten-year periods ended as of September 30, 2024. It also shows the average total returns of (i) a broad based index and (ii) an additional index reflecting the market segment(s) in which the Fund invests over the same periods. 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. GROWTH OF $10,000 |
Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 Year 5 Years 10 Years Class I 16.54 % 10.31 % 10.70 % MSCI World Index 32.43 % 13.04 % 10.07 % Bloomberg U.S. Treasury Inflation-Linked Bond Index 9.79 % 2.62 % 2.54 % |
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. |
Updated Performance Information Location [Text Block] | For updated Fund performance information, please visit: https://wealth.amg.com/ |
Net Assets | $ 104,728,802 |
Holdings Count | Holding | 35 |
Advisory Fees Paid, Amount | $ 876,917 |
Investment Company Portfolio Turnover | 33% |
Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ Total number of portfolio holdings 35 Net advisory fees paid $ Portfolio turnover rate as of the end of the reporting period 33 % |
Holdings [Text Block] | Graphical Representation of Holdings (as of September 30, 2024) Top ten holdings and portfolio breakdown are shown as a percentage of net assets of the Fund and country allocation is shown as a percentage of total long-term investments of the Fund. Top Ten Holdings Amazon.com, Inc. (United States) 6.6 % Alphabet, Inc., Class A (United States) 6.1 % Diageo PLC (United Kingdom) 5.1 % Aon PLC, Class A (United States) 4.7 % UnitedHealth Group, Inc. (United States) 4.7 % Canadian Pacific Kansas City, Ltd. (Canada) 4.6 % Unilever PLC (United Kingdom) 4.4 % Microsoft Corp. (United States) 4.2 % Airbus SE (France) 4.0 % Vinci, S.A. (France) 3.9 % Top Ten as a Group 48.3 % Portfolio Breakdown Country Allocation |
Largest Holdings [Text Block] | Top Ten Holdings Amazon.com, Inc. (United States) 6.6 % Alphabet, Inc., Class A (United States) 6.1 % Diageo PLC (United Kingdom) 5.1 % Aon PLC, Class A (United States) 4.7 % UnitedHealth Group, Inc. (United States) 4.7 % Canadian Pacific Kansas City, Ltd. (Canada) 4.6 % Unilever PLC (United Kingdom) 4.4 % Microsoft Corp. (United States) 4.2 % Airbus SE (France) 4.0 % Vinci, S.A. (France) 3.9 % Top Ten as a Group 48.3 % |
C000248366 [Member] | |
Shareholder Report [Line Items] | |
Fund Name | AMG Systematica Managed Futures Strategy Fund |
Class Name | Class N |
Trading Symbol | SMFNX |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG Systematica Managed Futures Strategy Fund (the “Fund”) for the period of May 1, 2024 (commencement of operations) |
Shareholder Report Annual or Semi-Annual | annual shareholder report |
Additional Information [Text Block] | You can find additional information about the Fund at https://wealth.amg.com/resources/order-literature |
Additional Information Phone Number | 800-548-4539 |
Additional Information Website | https://wealth.amg.com/resources/order-literature |
Expenses [Text Block] | Fund Expenses What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Systematica Managed Futures Strategy Fund $ 1.40 % Costs of a $10,000 investment would have been higher for a full reporting period. |
Expenses Paid, Amount | $ 57 |
Expense Ratio, Percent | 1.40% |
Net Assets | $ 6,033,843 |
Holdings Count | Holding | 230 |
Advisory Fees Paid, Amount | $ 0 |
Investment Company Portfolio Turnover | 0% |
Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ Total number of portfolio holdings 230 Net advisory fees paid $ Portfolio turnover rate as of the end of the reporting period 0 % |
Holdings [Text Block] | Graphical Representation of Holdings (as of September 30, 2024) The portfolio breakdown is shown as a percentage of net assets of the Fund and notional allocation is shown as a percentage of total notional value of the Fund's derivatives holdings. The portfolio breakdown and notional allocation are inclusive of the Fund's wholly-owned subsidiary. Portfolio Breakdown Notional Allocation |
C000248367 [Member] | |
Shareholder Report [Line Items] | |
Fund Name | AMG Systematica Managed Futures Strategy Fund |
Class Name | Class I |
Trading Symbol | SMFIX |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG Systematica Managed Futures Strategy Fund (the “Fund”) for the period of May 1, 2024 (commencement of operations) to September 30, 2024. |
Shareholder Report Annual or Semi-Annual | annual shareholder report |
Additional Information [Text Block] | You can find additional information about the Fund at https://wealth.amg.com/resources/order-literature |
Additional Information Phone Number | 800-548-4539 |
Additional Information Website | https://wealth.amg.com/resources/order-literature |
Expenses [Text Block] | Fund Expenses What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Systematica Managed Futures Strategy Fund $ 1.40 % Costs of a $10,000 investment would have been higher for a full reporting period. |
Expenses Paid, Amount | $ 57 |
Expense Ratio, Percent | 1.40% |
Net Assets | $ 6,033,843 |
Holdings Count | Holding | 230 |
Advisory Fees Paid, Amount | $ 0 |
Investment Company Portfolio Turnover | 0% |
Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ Total number of portfolio holdings 230 Net advisory fees paid $ Portfolio turnover rate as of the end of the reporting period 0 % |
Holdings [Text Block] | Graphical Representation of Holdings (as of September 30, 2024) The portfolio breakdown is shown as a percentage of net assets of the Fund and notional allocation is shown as a percentage of total notional value of the Fund's derivatives holdings. The portfolio breakdown and notional allocation are inclusive of the Fund's wholly-owned subsidiary. Portfolio Breakdown Notional Allocation |
C000248365 [Member] | |
Shareholder Report [Line Items] | |
Fund Name | AMG Systematica Managed Futures Strategy Fund |
Class Name | Class Z |
Trading Symbol | SMFZX |
Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG Systematica Managed Futures Strategy Fund (the “Fund”) for the period of May 1, 2024 (commencement of operations) to September 30, 2024. |
Shareholder Report Annual or Semi-Annual | annual shareholder report |
Additional Information [Text Block] | You can find additional information about the Fund at https://wealth.amg.com/resources/order-literature |
Additional Information Phone Number | 800-548-4539 |
Additional Information Website | https://wealth.amg.com/resources/order-literature |
Expenses [Text Block] | Fund Expenses What were the Fund costs for the last year? (Based on a hypothetical $10,000 investment) Fund (Class) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment AMG Systematica Managed Futures Strategy Fund $ 1.40 % Costs of a $10,000 investment would have been higher for a full reporting period. |
Expenses Paid, Amount | $ 57 |
Expense Ratio, Percent | 1.40% |
Net Assets | $ 6,033,843 |
Holdings Count | Holding | 230 |
Advisory Fees Paid, Amount | $ 0 |
Investment Company Portfolio Turnover | 0% |
Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ Total number of portfolio holdings 230 Net advisory fees paid $ Portfolio turnover rate as of the end of the reporting period 0 % |
Holdings [Text Block] | Graphical Representation of Holdings (as of September 30, 2024) The portfolio breakdown is shown as a percentage of net assets of the Fund and notional allocation is shown as a percentage of total notional value of the Fund's derivatives holdings. The portfolio breakdown and notional allocation are inclusive of the Fund's wholly-owned subsidiary. Portfolio Breakdown Notional Allocation |