| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Legg Mason Global Asset Management Trust |
| Entity Central Index Key | 0001474103 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended | |
| Sep. 30, 2024 USD ($) $ / shares | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | Legg Mason Global Asset Management Trust | |
| Entity Central Index Key | 0001474103 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Sep. 30, 2024 | |
| Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | ClearBridge Global Infrastructure Income Fund | |
| Class Name | Class A | |
| Trading Symbol | RGAVX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about ClearBridge Global Infrastructure Income Fund for the period 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://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment * Class A $140 1.23% | [1] |
| Expenses Paid, Amount | $ 140 | |
| Expense Ratio, Percent | 1.23% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended September 30, 2024, Class A shares of ClearBridge Global Infrastructure Income Fund returned 27.54%. The Fund compares its performance to the S&P Global Infrastructure Index, which returned 29.68% for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ North American electric utilities were top contributors due to greater electricity demand expected from artificial intelligence (AI) powered data centers. ↑ Entergy, a regulated electric utility provider, rallied on expectations that the company will be a beneficiary of AI and subsequent power demand as well as a solid storm response to Hurricane Francine. ↑ Constellation Energy, primarily a nuclear generation company, has been benefiting from the AI-driven growth in power demand, as part of which it signed a landmark long-term power agreement deal with Microsoft to supply the tech giant with carbon-free power. Top detractors from performance: ↓ The airports sector was the main laggard for the year, with Paris Aéroport (ADP) the top detractor. Airports lagged with cooling sentiment driven by concerns around passenger traffic slowing amid rising costs of living and aircraft supply chain issues affecting delivery of new aircraft to airlines. ↓ West Japan Railway (JR West), one of Japan’s largest passenger railway operators, was weaker amid a jump in the Japanese 10-year bond yields early in the period; Japan’s traffic recovery also plateaued late in the period, weighing on shares. The Fund exited its position during the period. ↓ Toll roads were also a weaker during the period, with Australian toll road Atlas Arteria a main detractor. The company’s key assets consist of various French and U.S. toll roads concessions including Dulles Greenway in Virginia. Its shares weakened after the company failed to reach an outcome with the state of Virginia. Additionally, French companies lost their appeal in the context of the government’s new concession tax, which also led to a drag on earnings. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended September 30, 2024 1 Year 5 Year Since Inception (3/31/2016) Class A 27.54 7.68 7.56 Class A (with sales charge) 20.50 6.41 6.81 MSCI AC World Net Dividends Index 31.76 12.19 11.36 S&P Global Infrastructure Index 29.68 5.97 6.85 | |
| 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 current month-end performance, please call Franklin Templeton at 877-6LM-FUND/656-3863 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 122,776,336 | |
| Holdings Count | $ / shares | 38 | [2] |
| Advisory Fees Paid, Amount | $ 566,448 | |
| Investment Company Portfolio Turnover | 73% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of September 30, 2024) Total Net Assets $122,776,336 Total Number of Portfolio Holdings * 38 Total Management Fee Paid $566,448 Portfolio Turnover Rate 73% | [2] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | ClearBridge Global Infrastructure Income Fund | |
| Class Name | Class C | |
| Trading Symbol | CBGAX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about ClearBridge Global Infrastructure Income Fund for the period 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://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment * Class C $233 2.06% | [3] |
| Expenses Paid, Amount | $ 233 | |
| Expense Ratio, Percent | 2.06% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended September 30, 2024, Class C shares of ClearBridge Global Infrastructure Income Fund returned 26.54%. The Fund compares its performance to the S&P Global Infrastructure Index, which returned 29.68% for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ North American electric utilities were top contributors due to greater electricity demand expected from artificial intelligence (AI) powered data centers. ↑ Entergy, a regulated electric utility provider, rallied on expectations that the company will be a beneficiary of AI and subsequent power demand as well as a solid storm response to Hurricane Francine. ↑ Constellation Energy, primarily a nuclear generation company, has been benefiting from the AI-driven growth in power demand, as part of which it signed a landmark long-term power agreement deal with Microsoft to supply the tech giant with carbon-free power. Top detractors from performance: ↓ The airports sector was the main laggard for the year, with Paris Aéroport (ADP) the top detractor. Airports lagged with cooling sentiment driven by concerns around passenger traffic slowing amid rising costs of living and aircraft supply chain issues affecting delivery of new aircraft to airlines. ↓ West Japan Railway (JR West), one of Japan’s largest passenger railway operators, was weaker amid a jump in the Japanese 10-year bond yields early in the period; Japan’s traffic recovery also plateaued late in the period, weighing on shares. The Fund exited its position during the period. ↓ Toll roads were also a weaker during the period, with Australian toll road Atlas Arteria a main detractor. The company’s key assets consist of various French and U.S. toll roads concessions including Dulles Greenway in Virginia. Its shares weakened after the company failed to reach an outcome with the state of Virginia. Additionally, French companies lost their appeal in the context of the government’s new concession tax, which also led to a drag on earnings. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended September 30, 2024 1 Year Since Inception (10/14/2022) Class C 26.54 13.90 Class C (with sales charge) 25.54 13.90 MSCI AC World Net Dividends Index 31.76 26.82 S&P Global Infrastructure Index 29.68 18.79 | |
| 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 current month-end performance, please call Franklin Templeton at 877-6LM-FUND/656-3863 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 122,776,336 | |
| Holdings Count | $ / shares | 38 | [4] |
| Advisory Fees Paid, Amount | $ 566,448 | |
| Investment Company Portfolio Turnover | 73% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of September 30, 2024) Total Net Assets $122,776,336 Total Number of Portfolio Holdings * 38 Total Management Fee Paid $566,448 Portfolio Turnover Rate 73% | [4] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | ClearBridge Global Infrastructure Income Fund | |
| Class Name | Class I | |
| Trading Symbol | RGIVX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about ClearBridge Global Infrastructure Income Fund for the period 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://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment * Class I $109 0.96% | [5] |
| Expenses Paid, Amount | $ 109 | |
| Expense Ratio, Percent | 0.96% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended September 30, 2024, Class I shares of ClearBridge Global Infrastructure Income Fund returned 27.92%. The Fund compares its performance to the S&P Global Infrastructure Index, which returned 29.68% for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ North American electric utilities were top contributors due to greater electricity demand expected from artificial intelligence (AI) powered data centers. ↑ Entergy, a regulated electric utility provider, rallied on expectations that the company will be a beneficiary of AI and subsequent power demand as well as a solid storm response to Hurricane Francine. ↑ Constellation Energy, primarily a nuclear generation company, has been benefiting from the AI-driven growth in power demand, as part of which it signed a landmark long-term power agreement deal with Microsoft to supply the tech giant with carbon-free power. Top detractors from performance: ↓ The airports sector was the main laggard for the year, with Paris Aéroport (ADP) the top detractor. Airports lagged with cooling sentiment driven by concerns around passenger traffic slowing amid rising costs of living and aircraft supply chain issues affecting delivery of new aircraft to airlines. ↓ West Japan Railway (JR West), one of Japan’s largest passenger railway operators, was weaker amid a jump in the Japanese 10-year bond yields early in the period; Japan’s traffic recovery also plateaued late in the period, weighing on shares. The Fund exited its position during the period. ↓ Toll roads were also a weaker during the period, with Australian toll road Atlas Arteria a main detractor. The company’s key assets consist of various French and U.S. toll roads concessions including Dulles Greenway in Virginia. Its shares weakened after the company failed to reach an outcome with the state of Virginia. Additionally, French companies lost their appeal in the context of the government’s new concession tax, which also led to a drag on earnings. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended September 30, 2024 1 Year 5 Year Since Inception (3/31/2016) Class I 27.92 8.02 7.89 MSCI AC World Net Dividends Index 31.76 12.19 11.36 S&P Global Infrastructure Index 29.68 5.97 6.85 | |
| 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 current month-end performance, please call Franklin Templeton at 877-6LM-FUND/656-3863 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 122,776,336 | |
| Holdings Count | $ / shares | 38 | [6] |
| Advisory Fees Paid, Amount | $ 566,448 | |
| Investment Company Portfolio Turnover | 73% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of September 30, 2024) Total Net Assets $122,776,336 Total Number of Portfolio Holdings * 38 Total Management Fee Paid $566,448 Portfolio Turnover Rate 73% | [6] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class IS | ||
| Shareholder Report [Line Items] | ||
| Fund Name | ClearBridge Global Infrastructure Income Fund | |
| Class Name | Class IS | |
| Trading Symbol | RGSVX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about ClearBridge Global Infrastructure Income Fund for the period 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://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment * Class IS $98 0.86% | [7] |
| Expenses Paid, Amount | $ 98 | |
| Expense Ratio, Percent | 0.86% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended September 30, 2024, Class IS shares of ClearBridge Global Infrastructure Income Fund returned 28.09%. The Fund compares its performance to the S&P Global Infrastructure Index, which returned 29.68% for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ North American electric utilities were top contributors due to greater electricity demand expected from artificial intelligence (AI) powered data centers. ↑ Entergy, a regulated electric utility provider, rallied on expectations that the company will be a beneficiary of AI and subsequent power demand as well as a solid storm response to Hurricane Francine. ↑ Constellation Energy, primarily a nuclear generation company, has been benefiting from the AI-driven growth in power demand, as part of which it signed a landmark long-term power agreement deal with Microsoft to supply the tech giant with carbon-free power. Top detractors from performance: ↓ The airports sector was the main laggard for the year, with Paris Aéroport (ADP) the top detractor. Airports lagged with cooling sentiment driven by concerns around passenger traffic slowing amid rising costs of living and aircraft supply chain issues affecting delivery of new aircraft to airlines. ↓ West Japan Railway (JR West), one of Japan’s largest passenger railway operators, was weaker amid a jump in the Japanese 10-year bond yields early in the period; Japan’s traffic recovery also plateaued late in the period, weighing on shares. The Fund exited its position during the period. ↓ Toll roads were also a weaker during the period, with Australian toll road Atlas Arteria a main detractor. The company’s key assets consist of various French and U.S. toll roads concessions including Dulles Greenway in Virginia. Its shares weakened after the company failed to reach an outcome with the state of Virginia. Additionally, French companies lost their appeal in the context of the government’s new concession tax, which also led to a drag on earnings. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended September 30, 2024 1 Year 5 Year Since Inception (3/31/2016) Class IS 28.09 8.11 7.99 MSCI AC World Net Dividends Index 31.76 12.19 11.36 S&P Global Infrastructure Index 29.68 5.97 6.85 | |
| 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 current month-end performance, please call Franklin Templeton at 877-6LM-FUND/656-3863 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 122,776,336 | |
| Holdings Count | $ / shares | 38 | [8] |
| Advisory Fees Paid, Amount | $ 566,448 | |
| Investment Company Portfolio Turnover | 73% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of September 30, 2024) Total Net Assets $122,776,336 Total Number of Portfolio Holdings * 38 Total Management Fee Paid $566,448 Portfolio Turnover Rate 73% | [8] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| [1] * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. * Does not include derivatives, except purchased options, if any. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. * Does not include derivatives, except purchased options, if any. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. * Does not include derivatives, except purchased options, if any. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. * Does not include derivatives, except purchased options, if any. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||
| Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | |
| Class A | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Class A (with sales charge) | ||||||||
| Account Value | $ 17,513 | $ 13,732 | $ 13,837 | $ 14,914 | $ 12,713 | $ 12,100 | $ 10,899 | $ 11,375 | $ 9,945 |
| Class C | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Class C (with sales charge) | ||||||||
| Account Value | $ 12,910 | 10,202 | |||||||
| Class I | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Class I | ||||||||
| Account Value | $ 1,906,571 | 1,490,443 | 1,497,727 | 1,610,726 | 1,368,058 | 1,296,463 | 1,164,501 | 1,210,900 | 1,056,332 |
| Class IS | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Class IS | ||||||||
| Account Value | $ 1,922,735 | 1,501,113 | 1,507,387 | 1,619,775 | 1,374,129 | 1,302,184 | 1,166,556 | 1,213,237 | 1,056,446 |
| MSCI AC World Net Dividends Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | ||||||||
| Account Value | $ 24,957 | 18,942 | 15,680 | 19,763 | 15,508 | 14,042 | 13,851 | 12,617 | 10,634 |
| MSCI AC World Net Dividends Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | ||||||||
| Account Value | $ 15,916 | 12,080 | |||||||
| MSCI AC World Net Dividends Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | ||||||||
| Account Value | $ 2,495,688 | 1,894,178 | 1,567,996 | 1,976,289 | 1,550,814 | 1,404,174 | 1,385,069 | 1,261,740 | 1,063,431 |
| MSCI AC World Net Dividends Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | ||||||||
| Account Value | $ 2,495,688 | 1,894,178 | 1,567,996 | 1,976,289 | 1,550,814 | 1,404,174 | 1,385,069 | 1,261,740 | 1,063,431 |
| S&P Global Infrastructure Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | ||||||||
| Account Value | $ 17,559 | 13,541 | 12,787 | 13,707 | 11,224 | 13,141 | 11,581 | 12,036 | 10,731 |
| S&P Global Infrastructure Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | ||||||||
| Account Value | $ 13,732 | 10,590 | |||||||
| S&P Global Infrastructure Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | ||||||||
| Account Value | $ 1,755,898 | 1,354,075 | 1,278,687 | 1,370,747 | 1,122,396 | 1,314,148 | 1,158,114 | 1,203,638 | 1,073,147 |
| S&P Global Infrastructure Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | ||||||||
| Account Value | $ 1,755,898 | $ 1,354,075 | $ 1,278,687 | $ 1,370,747 | $ 1,122,396 | $ 1,314,148 | $ 1,158,114 | $ 1,203,638 | $ 1,073,147 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 24 Months Ended | 60 Months Ended | 102 Months Ended |
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | |
| Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A (with sales charge) | |||
| Average Annual Return, Percent | 20.50% | 6.41% | 6.81% | |
| Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C (with sales charge) | |||
| Average Annual Return, Percent | 25.54% | 13.90% | ||
| Class I | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class I | |||
| Average Annual Return, Percent | 27.92% | 8.02% | 7.89% | |
| Class IS | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class IS | |||
| Average Annual Return, Percent | 28.09% | 8.11% | 7.99% | |
| Without Sales Load [Member] | Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| Average Annual Return, Percent | 27.54% | 7.68% | 7.56% | |
| Without Sales Load [Member] | Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C | |||
| Average Annual Return, Percent | 26.54% | 13.90% | ||
| MSCI AC World Net Dividends Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | |||
| Average Annual Return, Percent | 31.76% | 12.19% | 11.36% | |
| MSCI AC World Net Dividends Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | |||
| Average Annual Return, Percent | 31.76% | 26.82% | ||
| MSCI AC World Net Dividends Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | |||
| Average Annual Return, Percent | 31.76% | 12.19% | 11.36% | |
| MSCI AC World Net Dividends Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | MSCI AC World Net Dividends Index | |||
| Average Annual Return, Percent | 31.76% | 12.19% | 11.36% | |
| S&P Global Infrastructure Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | |||
| Average Annual Return, Percent | 29.68% | 5.97% | 6.85% | |
| S&P Global Infrastructure Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | |||
| Average Annual Return, Percent | 29.68% | 18.79% | ||
| S&P Global Infrastructure Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | |||
| Average Annual Return, Percent | 29.68% | 5.97% | 6.85% | |
| S&P Global Infrastructure Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P Global Infrastructure Index | |||
| Average Annual Return, Percent | 29.68% | 5.97% | 6.85% |
| Label | Element | Value |
| Class A | Utilities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 66.50% |
| Class A | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.40% |
| Class A | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.10% |
| Class A | Real Estate [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.70% |
| Class A | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1.30% |
| Label | Element | Value |
| Class C | Utilities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 66.50% |
| Class C | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.40% |
| Class C | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.10% |
| Class C | Real Estate [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.70% |
| Class C | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1.30% |
| Label | Element | Value |
| Class I | Utilities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 66.50% |
| Class I | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.40% |
| Class I | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.10% |
| Class I | Real Estate [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.70% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1.30% |
| Label | Element | Value |
| Class IS | Utilities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 66.50% |
| Class IS | Industrials [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.40% |
| Class IS | Energy [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.10% |
| Class IS | Real Estate [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.70% |
| Class IS | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1.30% |
