| Form N-CSR Cover | 12 Months Ended |
| May 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AMG Funds III |
| Entity Central Index Key | 0000720309 |
| Document Period End Date | May 31, 2024 |
| Shareholder Report | 12 Months Ended |
| May 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | AMG Funds III |
| Entity Central Index Key | 0000720309 |
| Document Period End Date | May 31, 2024 |
| C000091187 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K International Small Cap Fund |
| Class Name | Class N |
| Trading Symbol | MECAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG GW&K International Small Cap Fund (the “Fund”) for the period of June 1, 2023 to May 31, 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 GW&K International Small Cap Fund $ 1.14 % |
| Expenses Paid, Amount | $ 120 |
| Expense Ratio, Percent | 1.14% |
| 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 May 31, 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. Performance for other share classes will vary. 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 N 10.99 % (0.39%) 5.34 % MSCI World ex USA Index 18.48 % 8.15 % 4.59 % MSCI World ex USA Small Cap Index 14.36 % 6.25 % 4.58 % |
| 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. |
| Performance Table Market Index Changed [Text Block] | Effective May 31, 2024, the MSCI World ex USA Index was added as a broad measure of market performance in accordance with recent changes to regulatory disclosure requirements. The Fund continues to use the MSCI World ex USA Small Cap Index, its legacy primary benchmark, as an additional benchmark that reflects the market segment(s) in which the Fund invests. |
| Updated Performance Information Location [Text Block] | For updated Fund performance information, please visit: https://wealth.amg.com/ |
| Net Assets | $ 40,201,503 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 114,252 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Total advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of May 31, 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 Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % |
| C000091188 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K International Small Cap Fund |
| Class Name | Class I |
| Trading Symbol | MECIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG GW&K International Small Cap Fund (the “Fund”) for the period of June 1, 2023 to May 31, 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 GW&K International Small Cap Fund $ 0.99 % |
| Expenses Paid, Amount | $ 105 |
| Expense Ratio, Percent | 0.99% |
| 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 May 31, 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. Performance for other share classes will vary. 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 11.15 % (0.24%) 5.52 % MSCI World ex USA Index 18.48 % 8.15 % 4.59 % MSCI World ex USA Small Cap Index 14.36 % 6.25 % 4.58 % |
| 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. |
| Performance Table Market Index Changed [Text Block] | Effective May 31, 2024, the MSCI World ex USA Index was added as a broad measure of market performance in accordance with recent changes to regulatory disclosure requirements. The Fund continues to use the MSCI World ex USA Small Cap Index, its legacy primary benchmark, as an additional benchmark that reflects the market segment(s) in which the Fund invests. |
| Updated Performance Information Location [Text Block] | For updated Fund performance information, please visit: https://wealth.amg.com/ |
| Net Assets | $ 40,201,503 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 114,252 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Total advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of May 31, 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 Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % |
| C000188985 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | AMG GW&K International Small Cap Fund |
| Class Name | Class Z |
| Trading Symbol | MECZX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about AMG GW&K International Small Cap Fund (the “Fund”) for the period of June 1, 2023 to May 31, 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 GW&K International Small Cap Fund $ 0.89 % |
| Expenses Paid, Amount | $ 94 |
| Expense Ratio, Percent | 0.89% |
| 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 since inception in the class of shares noted, 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 since inception periods ended as of May 31, 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. Performance for other share classes will vary. 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 Since Inception Class Z 11.27 % (0.15%) 1.99 % MSCI World ex USA Index 18.48 % 8.15 % 6.12 % MSCI World ex USA Small Cap Index 14.36 % 6.25 % 4.53 % |
| 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. |
| Performance Table Market Index Changed [Text Block] | Effective May 31, 2024, the MSCI World ex USA Index was added as a broad measure of market performance in accordance with recent changes to regulatory disclosure requirements. The Fund continues to use the MSCI World ex USA Small Cap Index, its legacy primary benchmark, as an additional benchmark that reflects the market segment(s) in which the Fund invests. |
| Updated Performance Information Location [Text Block] | For updated Fund performance information, please visit: https://wealth.amg.com/ |
| Net Assets | $ 40,201,503 |
| Holdings Count | Holding | 75 |
| Advisory Fees Paid, Amount | $ 114,252 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of Fund net assets $ % Total number of portfolio holdings $ % Total advisory fees paid $ % Portfolio turnover rate as of the end of the reporting period $ % |
| Holdings [Text Block] | Graphical Representation of Holdings (as of May 31, 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 Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % Portfolio Breakdown Country Allocation |
| Largest Holdings [Text Block] | Top Ten Holdings Senshu Electric Co., Ltd. (Japan) 2.9 % DMG Mori Co., Ltd. (Japan) 2.9 % Vidrala, S.A. (Spain) 2.3 % Gift Holdings, Inc. (Japan) 2.1 % Hill & Smith PLC (United Kingdom) 2.1 % Rheinmetall AG (Germany) 2.1 % Howden Joinery Group PLC (United Kingdom) 2.0 % Kitron A.S.A. (Norway) 2.0 % ADENTRA, Inc. (Canada) 1.9 % Sarantis, S.A. (Greece) 1.8 % Top Ten as a Group 22.1 % |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 60 Months Ended | 84 Months Ended | 120 Months Ended | ||||||||||
| May 31, 2024 | May 31, 2024 | May 31, 2024 | May 31, 2024 | May 31, 2023 | May 31, 2022 | May 31, 2021 | May 31, 2020 | May 31, 2019 | May 31, 2018 | May 31, 2017 | May 31, 2016 | May 31, 2015 | May 31, 2014 | |
| C000091187 [Member] | ||||||||||||||
| Account Value [Line Items] | ||||||||||||||
| Line Graph and Table Measure Name | Class N | |||||||||||||
| Account Value | $ 16,823 | $ 16,823 | $ 16,823 | $ 16,823 | $ 15,160 | $ 15,215 | $ 19,361 | $ 14,870 | $ 17,160 | $ 19,264 | $ 14,906 | $ 11,837 | $ 11,495 | $ 10,000 |
| Average Annual Return, Percent | 10.99% | (0.39%) | 5.34% | |||||||||||
| C000091188 [Member] | ||||||||||||||
| Account Value [Line Items] | ||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||
| Account Value | $ 17,112 | $ 17,112 | 17,112 | $ 17,112 | 15,396 | 15,426 | 19,603 | 15,033 | 17,323 | 19,424 | 15,012 | 11,894 | 11,527 | 10,000 |
| Average Annual Return, Percent | 11.15% | (0.24%) | 5.52% | |||||||||||
| C000188985 [Member] | ||||||||||||||
| Account Value [Line Items] | ||||||||||||||
| Line Graph and Table Measure Name | Class Z | |||||||||||||
| Account Value | $ 11,473 | $ 11,473 | $ 11,473 | $ 11,473 | 10,315 | 10,328 | 13,109 | 10,044 | 11,562 | 12,951 | 10,000 | |||
| Average Annual Return, Percent | 11.27% | (0.15%) | 1.99% | |||||||||||
| MSCI World ex USA Small Cap Index [Member] | ||||||||||||||
| Account Value [Line Items] | ||||||||||||||
| Line Graph and Table Measure Name | MSCI World ex USA Small Cap Index | |||||||||||||
| Account Value | $ 15,651 | $ 15,651 | $ 15,651 | $ 15,651 | 13,685 | 14,430 | 16,910 | 11,493 | 11,559 | 13,106 | 11,476 | 9,933 | 9,969 | 10,000 |
| Average Annual Return, Percent | 14.36% | 6.25% | 4.53% | 4.58% | ||||||||||
| MSCI World ex USA Index [Member] | ||||||||||||||
| Account Value [Line Items] | ||||||||||||||
| Line Graph and Table Measure Name | MSCI World ex USA Index | |||||||||||||
| Account Value | $ 15,672 | $ 15,672 | $ 15,672 | $ 15,672 | $ 13,228 | $ 13,028 | $ 14,323 | $ 10,261 | $ 10,591 | $ 11,201 | $ 10,339 | $ 8,932 | $ 9,887 | $ 10,000 |
| Average Annual Return, Percent | 18.48% | 8.15% | 6.12% | 4.59% |
| Shareholder Report, Holdings (Details) | May 31, 2024 |
| C000091187 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.10% |
| C000091187 [Member] | DMG Mori Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000091187 [Member] | Gift Holdings Inc Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091187 [Member] | Rheinmetall AG Germany [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091187 [Member] | ADENTRA Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000091187 [Member] | Kitron A S A Norway [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000091187 [Member] | Senshu Electric Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000091187 [Member] | Hill And Smith PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091187 [Member] | Howden Joinery Group PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000091187 [Member] | Sarantis S A Greece [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000091187 [Member] | Vidrala S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000091187 [Member] | All Other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 26.20% |
| C000091187 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000091187 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000091187 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000091187 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| C000091187 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000091187 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000091187 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000091187 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000091187 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000091187 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000091187 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091187 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.20% |
| C000091187 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091187 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000091187 [Member] | ITALY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091187 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.90% |
| C000091187 [Member] | NORWAY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000091187 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 34.20% |
| C000091187 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000091187 [Member] | Other Assets Less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.10%) |
| C000091187 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000091188 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.10% |
| C000091188 [Member] | DMG Mori Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000091188 [Member] | Gift Holdings Inc Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091188 [Member] | Rheinmetall AG Germany [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091188 [Member] | ADENTRA Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000091188 [Member] | Kitron A S A Norway [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000091188 [Member] | Senshu Electric Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000091188 [Member] | Hill And Smith PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000091188 [Member] | Howden Joinery Group PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000091188 [Member] | Sarantis S A Greece [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000091188 [Member] | Vidrala S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000091188 [Member] | All Other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 26.20% |
| C000091188 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000091188 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000091188 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000091188 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| C000091188 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000091188 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000091188 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000091188 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000091188 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000091188 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000091188 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091188 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.20% |
| C000091188 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091188 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000091188 [Member] | ITALY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000091188 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.90% |
| C000091188 [Member] | NORWAY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000091188 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 34.20% |
| C000091188 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000091188 [Member] | Other Assets Less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.10%) |
| C000091188 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000188985 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.10% |
| C000188985 [Member] | DMG Mori Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000188985 [Member] | Gift Holdings Inc Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000188985 [Member] | Rheinmetall AG Germany [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000188985 [Member] | ADENTRA Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000188985 [Member] | Kitron A S A Norway [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000188985 [Member] | Senshu Electric Co Ltd Japan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000188985 [Member] | Hill And Smith PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000188985 [Member] | Howden Joinery Group PLC United Kingdom [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000188985 [Member] | Sarantis S A Greece [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000188985 [Member] | Vidrala S A Spain [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000188985 [Member] | All Other [Member] | |
| Holdings [Line Items] | |
| Percent of Total Investments | 26.20% |
| C000188985 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000188985 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000188985 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000188985 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| C000188985 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000188985 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000188985 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| C000188985 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000188985 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000188985 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000188985 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000188985 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 12.20% |
| C000188985 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000188985 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000188985 [Member] | ITALY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.30% |
| C000188985 [Member] | FINLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.90% |
| C000188985 [Member] | NORWAY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000188985 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 34.20% |
| C000188985 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000188985 [Member] | Other Assets Less Liabilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.10%) |
| C000188985 [Member] | Short-Term Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
