| Form N-CSR Cover | 6 Months Ended |
| Jul. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Natixis Funds Trust IV |
| Entity Central Index Key | 0001095726 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| Shareholder Report | 6 Months Ended |
| Jul. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Natixis Funds Trust IV |
| Entity Central Index Key | 0001095726 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jul. 31, 2024 |
| C000021867 | |
| Shareholder Report [Line Items] | |
| Fund Name | AEW Global Focused Real Estate Fund |
| Class Name | Class A |
| Trading Symbol | NRFAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AEW Global Focused Real Estate Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class A $60 1.16% Footnote Description Footnote † Annualized |
| Expenses Paid, Amount | $ 60 |
| Expense Ratio, Percent | 1.16% |
| AssetsNet | $ 35,778,938 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $35,778,938 # of Portfolio Holdings (including overnight repurchase agreements) 59 Portfolio Turnover Rate 26% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 0.9% Hotel & Resort REITs 3.1% Office REITs 5.8% Health Care REITs 8.4% Diversified REITs 9.6% Real Estate Management & Development 10.4% Residential REITs 11.9% Retail REITs 14.6% Specialized REITs 16.5% Industrial REITs 18.8% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes There were no material fund changes during the period. |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B31"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000021869 | |
| Shareholder Report [Line Items] | |
| Fund Name | AEW Global Focused Real Estate Fund |
| Class Name | Class C |
| Trading Symbol | NRCFX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AEW Global Focused Real Estate Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B41"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class C $98 1.91% Footnote Description Footnote † Annualized |
| Expenses Paid, Amount | $ 98 |
| Expense Ratio, Percent | 1.91% |
| AssetsNet | $ 35,778,938 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $35,778,938 # of Portfolio Holdings (including overnight repurchase agreements) 59 Portfolio Turnover Rate 26% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 0.9% Hotel & Resort REITs 3.1% Office REITs 5.8% Health Care REITs 8.4% Diversified REITs 9.6% Real Estate Management & Development 10.4% Residential REITs 11.9% Retail REITs 14.6% Specialized REITs 16.5% Industrial REITs 18.8% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes There were no material fund changes during the period. |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B53"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000128774 | |
| Shareholder Report [Line Items] | |
| Fund Name | AEW Global Focused Real Estate Fund |
| Class Name | Class N |
| Trading Symbol | NRFNX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AEW Global Focused Real Estate Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B63"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $44 0.86% Footnote Description Footnote † Annualized |
| Expenses Paid, Amount | $ 44 |
| Expense Ratio, Percent | 0.86% |
| AssetsNet | $ 35,778,938 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $35,778,938 # of Portfolio Holdings (including overnight repurchase agreements) 59 Portfolio Turnover Rate 26% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 0.9% Hotel & Resort REITs 3.1% Office REITs 5.8% Health Care REITs 8.4% Diversified REITs 9.6% Real Estate Management & Development 10.4% Residential REITs 11.9% Retail REITs 14.6% Specialized REITs 16.5% Industrial REITs 18.8% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes There were no material fund changes during the period. |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B75"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000021870 | |
| Shareholder Report [Line Items] | |
| Fund Name | AEW Global Focused Real Estate Fund |
| Class Name | Class Y |
| Trading Symbol | NRFYX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about AEW Global Focused Real Estate Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B85"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class Y $47 0.91% Footnote Description Footnote † Annualized |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.91% |
| AssetsNet | $ 35,778,938 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $35,778,938 # of Portfolio Holdings (including overnight repurchase agreements) 59 Portfolio Turnover Rate 26% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 0.9% Hotel & Resort REITs 3.1% Office REITs 5.8% Health Care REITs 8.4% Diversified REITs 9.6% Real Estate Management & Development 10.4% Residential REITs 11.9% Retail REITs 14.6% Specialized REITs 16.5% Industrial REITs 18.8% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes There were no material fund changes during the period. |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B97"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179028 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2015 Fund |
| Class Name | Class N |
| Trading Symbol | NSFBX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2015 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B107"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $11 0.22% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 11 |
| Expense Ratio, Percent | 0.22% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 5,817,619 |
| Holdings Count | Holding | 574 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 12% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $5,817,619 # of Portfolio Holdings (including overnight repurchase agreements) 574 Portfolio Turnover Rate 12% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 35.1% Short-Term Investments 2.6% Exchange-Traded Funds 3.3% Banking 2.3% Treasuries 2.8% Mutual Funds 4.7% Mortgage Related 5.8% Affiliated Mutual Funds 43.4% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B124"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179032 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2020 Fund |
| Class Name | Class N |
| Trading Symbol | NSFDX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2020 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B134"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $12 0.24% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 12 |
| Expense Ratio, Percent | 0.24% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 5,848,626 |
| Holdings Count | Holding | 585 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $5,848,626 # of Portfolio Holdings (including overnight repurchase agreements) 585 Portfolio Turnover Rate 25% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 38.3% Short-Term Investments 2.7% Exchange-Traded Funds 4.1% Banking 2.0% Software 2.1% Treasuries 2.6% Mutual Funds 5.6% Mortgage Related 5.8% Affiliated Mutual Funds 36.8% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B151"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179034 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2025 Fund |
| Class Name | Class N |
| Trading Symbol | NSFEX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2025 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B161"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $12 0.24% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 12 |
| Expense Ratio, Percent | 0.24% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 10,255,580 |
| Holdings Count | Holding | 580 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $10,255,580 # of Portfolio Holdings (including overnight repurchase agreements) 580 Portfolio Turnover Rate 18% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 35.5% Short-Term Investments 3.2% Exchange-Traded Funds 4.9% Capital Markets 2.0% Banking 2.0% Banks 2.1% Semiconductors & Semiconductor Equipment 2.1% Treasuries 2.4% Software 2.4% Mortgage Related 5.6% Mutual Funds 7.3% Affiliated Mutual Funds 30.5% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B178"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179036 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2030 Fund |
| Class Name | Class N |
| Trading Symbol | NSFFX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2030 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B188"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $12 0.24% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 12 |
| Expense Ratio, Percent | 0.24% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 21,041,817 |
| Holdings Count | Holding | 590 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $21,041,817 # of Portfolio Holdings (including overnight repurchase agreements) 590 Portfolio Turnover Rate 11% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 40.5% Short-Term Investments 3.2% Exchange-Traded Funds 5.7% Treasuries 2.2% Capital Markets 2.2% Banks 2.4% Semiconductors & Semiconductor Equipment 2.5% Software 2.8% Mortgage Related 4.4% Mutual Funds 9.1% Affiliated Mutual Funds 25.0% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B205"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179039 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2035 Fund |
| Class Name | Class N |
| Trading Symbol | NSFGX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2035 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B215"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $13 0.26% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 13 |
| Expense Ratio, Percent | 0.26% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 21,858,097 |
| Holdings Count | Holding | 590 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 11% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $21,858,097 # of Portfolio Holdings (including overnight repurchase agreements) 590 Portfolio Turnover Rate 11% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 40.0% Short-Term Investments 3.2% Exchange-Traded Funds 6.4% Interactive Media & Services 2.2% Oil, Gas & Consumable Fuels 2.2% Capital Markets 2.6% Banks 2.8% Semiconductors & Semiconductor Equipment 2.9% Software 3.2% Mortgage Related 3.3% Mutual Funds 9.9% Affiliated Mutual Funds 21.3% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B232"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179040 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2040 Fund |
| Class Name | Class N |
| Trading Symbol | NSFHX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2040 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B242"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $14 0.27% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.27% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 25,538,637 |
| Holdings Count | Holding | 590 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $25,538,637 # of Portfolio Holdings (including overnight repurchase agreements) 590 Portfolio Turnover Rate 10% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 39.3% Short-Term Investments 3.3% Exchange-Traded Funds 6.9% Financial Services 2.1% Mortgage Related 2.2% Interactive Media & Services 2.5% Oil, Gas & Consumable Fuels 2.6% Capital Markets 3.0% Banks 3.2% Semiconductors & Semiconductor Equipment 3.3% Software 3.5% Mutual Funds 10.7% Affiliated Mutual Funds 17.4% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B259"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179042 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2045 Fund |
| Class Name | Class N |
| Trading Symbol | NSFJX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2045 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B269"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $13 0.25% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 13 |
| Expense Ratio, Percent | 0.25% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 24,955,200 |
| Holdings Count | Holding | 586 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $24,955,200 # of Portfolio Holdings (including overnight repurchase agreements) 586 Portfolio Turnover Rate 9% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 42.0% Short-Term Investments 3.3% Exchange-Traded Funds 7.4% Financial Services 2.1% Interactive Media & Services 2.5% Oil, Gas & Consumable Fuels 2.6% Capital Markets 3.0% Banks 3.2% Semiconductors & Semiconductor Equipment 3.3% Software 3.6% Mutual Funds 12.1% Affiliated Mutual Funds 14.9% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B286"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179044 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2050 Fund |
| Class Name | Class N |
| Trading Symbol | NSFKX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2050 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B296"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $14 0.27% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.27% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 24,719,983 |
| Holdings Count | Holding | 591 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 8% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $24,719,983 # of Portfolio Holdings (including overnight repurchase agreements) 591 Portfolio Turnover Rate 8% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 39.4% Short-Term Investments 3.8% Exchange-Traded Funds 8.4% Insurance 2.0% Financial Services 2.3% Interactive Media & Services 2.7% Oil, Gas & Consumable Fuels 2.8% Capital Markets 3.3% Banks 3.5% Semiconductors & Semiconductor Equipment 3.6% Software 3.9% Affiliated Mutual Funds 11.1% Mutual Funds 13.2% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B313"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179046 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2055 Fund |
| Class Name | Class N |
| Trading Symbol | NSFLX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2055 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B323"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $14 0.26% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.26% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 19,799,524 |
| Holdings Count | Holding | 581 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 10% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $19,799,524 # of Portfolio Holdings (including overnight repurchase agreements) 581 Portfolio Turnover Rate 10% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 38.1% Short-Term Investments 3.5% Exchange-Traded Funds 9.0% Insurance 2.0% Financial Services 2.3% Interactive Media & Services 2.8% Oil, Gas & Consumable Fuels 2.9% Capital Markets 3.3% Banks 3.6% Semiconductors & Semiconductor Equipment 3.7% Software 4.0% Affiliated Mutual Funds 10.5% Mutual Funds 14.3% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B340"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000179030 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2060 Fund |
| Class Name | Class N |
| Trading Symbol | NSFMX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2060 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B350"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $14 0.26% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.26% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 16,389,934 |
| Holdings Count | Holding | 583 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 8% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $16,389,934 # of Portfolio Holdings (including overnight repurchase agreements) 583 Portfolio Turnover Rate 8% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 38.3% Short-Term Investments 3.7% Exchange-Traded Funds 8.9% Insurance 2.0% Financial Services 2.3% Interactive Media & Services 2.7% Oil, Gas & Consumable Fuels 2.9% Capital Markets 3.3% Banks 3.6% Semiconductors & Semiconductor Equipment 3.6% Software 4.0% Affiliated Mutual Funds 10.5% Mutual Funds 14.2% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B367"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| C000232882 | |
| Shareholder Report [Line Items] | |
| Fund Name | Natixis Target Retirement 2065 Fund |
| Class Name | Class N |
| Trading Symbol | NSFOX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Natixis Target Retirement 2065 Fund for the period of February 1, 2024 to July 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments |
| Additional Information Phone Number | 800-225-5478 |
| Additional Information Website | im.natixis.com/funddocuments</span>" id="sjs-B377"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Footnote Reference Class N $14 0.27% Footnote Description Footnote † Annualized Costs do not include the expenses of the underlying funds in which the Fund invests. |
| Expenses Paid, Amount | $ 14 |
| Expense Ratio, Percent | 0.27% |
| Material Change Description [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Material Change Date | Jul. 01, 2024 |
| AssetsNet | $ 3,802,211 |
| Holdings Count | Holding | 534 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Total Net Assets $3,802,211 # of Portfolio Holdings (including overnight repurchase agreements) 534 Portfolio Turnover Rate 9% Total Advisory Fees Paid (after waiver/reimbursement) $0 |
| Holdings [Text Block] | Investment Summary Value Value Other investments less than 2% of net assets Footnote Reference 38.4% Short-Term Investments 3.5% Exchange-Traded Funds 9.0% Insurance 2.0% Financial Services 2.3% Oil, Gas & Consumable Fuels 2.8% Interactive Media & Services 2.9% Capital Markets 3.3% Banks 3.5% Semiconductors & Semiconductor Equipment 3.8% Software 4.1% Affiliated Mutual Funds 10.3% Mutual Funds 14.1% Footnote Description Footnote * Net of other assets less liabilities |
| Material Fund Change [Text Block] | Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Name Change: Expenses: |
| Material Fund Change Name [Text Block] | Name Change: |
| Material Fund Change Expenses [Text Block] | Expenses: |
| Summary of Change Legend [Text Block] | Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments |
| Updated Prospectus Phone Number | 800-225-5478 |
| Updated Prospectus Email Address | secretaryofthefunds@natixis.com</span>" id="sjs-B394"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span> |
| Shareholder Report, Holdings (Details) | Jul. 31, 2024 |
| C000021867 | Prologis, Inc.FR_74340W103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000021867 | Welltower, Inc.FR_95040Q104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000021867 | Equinix, Inc.FR_29444U700 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000021867 | AvalonBay Communities, Inc.FR_053484101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000021867 | Regency Centers Corp.FR_758849103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000021867 | Realty Income Corp.FR_756109104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000021867 | UDR, Inc.FR_902653104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000021867 | Extra Space Storage, Inc.FR_30225T102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000021867 | Broadstone Net Lease, Inc.FR_11135E203 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000021867 | Simon Property Group, Inc.FR_828806109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021867 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000021867 | SectorHotel & Resort REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021867 | SectorOffice REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000021867 | SectorHealth Care REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000021867 | SectorDiversified REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000021867 | SectorReal Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000021867 | SectorResidential REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.90% |
| C000021867 | SectorRetail REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000021867 | SectorSpecialized REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000021867 | SectorIndustrial REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000021867 | Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000021867 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000021867 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000021867 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000021867 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66% |
| C000021869 | Prologis, Inc.FR_74340W103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000021869 | Welltower, Inc.FR_95040Q104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000021869 | Equinix, Inc.FR_29444U700 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000021869 | AvalonBay Communities, Inc.FR_053484101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000021869 | Regency Centers Corp.FR_758849103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000021869 | Realty Income Corp.FR_756109104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000021869 | UDR, Inc.FR_902653104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000021869 | Extra Space Storage, Inc.FR_30225T102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000021869 | Broadstone Net Lease, Inc.FR_11135E203 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000021869 | Simon Property Group, Inc.FR_828806109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021869 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000021869 | SectorHotel & Resort REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021869 | SectorOffice REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000021869 | SectorHealth Care REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000021869 | SectorDiversified REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000021869 | SectorReal Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000021869 | SectorResidential REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.90% |
| C000021869 | SectorRetail REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000021869 | SectorSpecialized REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000021869 | SectorIndustrial REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000021869 | Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000021869 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000021869 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000021869 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000021869 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66% |
| C000128774 | Prologis, Inc.FR_74340W103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000128774 | Welltower, Inc.FR_95040Q104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000128774 | Equinix, Inc.FR_29444U700 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000128774 | AvalonBay Communities, Inc.FR_053484101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000128774 | Regency Centers Corp.FR_758849103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000128774 | Realty Income Corp.FR_756109104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000128774 | UDR, Inc.FR_902653104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000128774 | Extra Space Storage, Inc.FR_30225T102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000128774 | Broadstone Net Lease, Inc.FR_11135E203 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000128774 | Simon Property Group, Inc.FR_828806109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000128774 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000128774 | SectorHotel & Resort REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000128774 | SectorOffice REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000128774 | SectorHealth Care REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000128774 | SectorDiversified REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000128774 | SectorReal Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000128774 | SectorResidential REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.90% |
| C000128774 | SectorRetail REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000128774 | SectorSpecialized REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000128774 | SectorIndustrial REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000128774 | Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000128774 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000128774 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000128774 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000128774 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66% |
| C000021870 | Prologis, Inc.FR_74340W103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000021870 | Welltower, Inc.FR_95040Q104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000021870 | Equinix, Inc.FR_29444U700 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000021870 | AvalonBay Communities, Inc.FR_053484101 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000021870 | Regency Centers Corp.FR_758849103 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000021870 | Realty Income Corp.FR_756109104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000021870 | UDR, Inc.FR_902653104 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000021870 | Extra Space Storage, Inc.FR_30225T102 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000021870 | Broadstone Net Lease, Inc.FR_11135E203 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000021870 | Simon Property Group, Inc.FR_828806109 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021870 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000021870 | SectorHotel & Resort REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000021870 | SectorOffice REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000021870 | SectorHealth Care REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000021870 | SectorDiversified REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000021870 | SectorReal Estate Management & Development | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000021870 | SectorResidential REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.90% |
| C000021870 | SectorRetail REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000021870 | SectorSpecialized REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.50% |
| C000021870 | SectorIndustrial REITs | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000021870 | Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000021870 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000021870 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000021870 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000021870 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66% |
| C000179028 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.60% |
| C000179028 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.40% |
| C000179028 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179028 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.10% |
| C000179028 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000179028 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179028 | SectorBanking | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000179028 | SectorTreasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179028 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000179028 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000179028 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.40% |
| C000179028 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA Int Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179028 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000179028 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179028 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000179028 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000179028 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000179028 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179028 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000179028 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179028 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.50% |
| C000179028 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.80% |
| C000179028 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000179028 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.10% |
| C000179032 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 45.60% |
| C000179032 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 52.40% |
| C000179032 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179032 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.30% |
| C000179032 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000179032 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179032 | SectorBanking | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179032 | SectorTreasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000179032 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000179032 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000179032 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.80% |
| C000179032 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179032 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000179032 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000179032 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| C000179032 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| C000179032 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000179032 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179032 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000179032 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179032 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000179032 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000179032 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.20% |
| C000179032 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000179032 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179034 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 51.60% |
| C000179034 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.30% |
| C000179034 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179034 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.50% |
| C000179034 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179034 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000179034 | SectorBanking | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179034 | SectorTreasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000179034 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| C000179034 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000179034 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.50% |
| C000179034 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000179034 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179034 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179034 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179034 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000179034 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000179034 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000179034 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000179034 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| C000179034 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000179034 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000179034 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000179034 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000179034 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000179034 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000179034 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000179034 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000179036 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.70% |
| C000179036 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.40% |
| C000179036 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000179036 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.50% |
| C000179036 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179036 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000179036 | SectorTreasuries | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000179036 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000179036 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000179036 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25% |
| C000179036 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179036 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000179036 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000179036 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000179036 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000179036 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000179036 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000179036 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000179036 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000179036 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000179036 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000179036 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000179036 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.10% |
| C000179036 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000179036 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000179036 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000179036 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000179039 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 70.50% |
| C000179039 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.50% |
| C000179039 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179039 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40% |
| C000179039 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179039 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000179039 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000179039 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179039 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000179039 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179039 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000179039 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179039 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000179039 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000179039 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000179039 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.20% |
| C000179039 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000179039 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000179039 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.60% |
| C000179039 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000179039 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| C000179039 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000179039 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000179039 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000179039 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000179039 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000179039 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000179039 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000179040 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 79.10% |
| C000179040 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.90% |
| C000179040 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179040 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.30% |
| C000179040 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179040 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000179040 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.70% |
| C000179040 | SectorMortgage Related | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000179040 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000179040 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000179040 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000179040 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179040 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179040 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000179040 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000179040 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179040 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| C000179040 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000179040 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| C000179040 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000179040 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.60% |
| C000179040 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000179040 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000179040 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000179040 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000179040 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000179040 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179040 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179040 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000179042 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 85.70% |
| C000179042 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000179042 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179042 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42% |
| C000179042 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179042 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000179042 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| C000179042 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
| C000179042 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000179042 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000179042 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000179042 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179042 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000179042 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000179042 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000179042 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000179042 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| C000179042 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000179042 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| C000179042 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.30% |
| C000179042 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000179042 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000179042 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000179042 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000179042 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000179042 | Loomis Sayles Limited Term Government and Agency FundFR_TSR_AT_ Loomis Sayles Limited Term Government and Agency Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000179042 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000179042 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000179044 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 89.80% |
| C000179044 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000179044 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179044 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.40% |
| C000179044 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000179044 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000179044 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.20% |
| C000179044 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.10% |
| C000179044 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000179044 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179044 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000179044 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000179044 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000179044 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179044 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000179044 | SectorInsurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179044 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000179044 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000179044 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000179044 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000179044 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000179044 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000179044 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000179044 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000179044 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000179044 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000179044 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000179044 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000179046 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.40% |
| C000179046 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000179046 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000179046 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.10% |
| C000179046 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000179046 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9% |
| C000179046 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.30% |
| C000179046 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000179046 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000179046 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179046 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000179046 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000179046 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000179046 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000179046 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000179046 | SectorInsurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179046 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.60% |
| C000179046 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000179046 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000179046 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| C000179046 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| C000179046 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179046 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000179046 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179046 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000179046 | Loomis Sayles Inflation Protected Securities FundFR_TSR_AT_ Loomis Sayles Inflation Protected Securities Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000179046 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000179046 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179030 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.50% |
| C000179030 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000179030 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179030 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.30% |
| C000179030 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000179030 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179030 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.20% |
| C000179030 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000179030 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000179030 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000179030 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000179030 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000179030 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000179030 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000179030 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000179030 | SectorInsurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000179030 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.50% |
| C000179030 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.70% |
| C000179030 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000179030 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
| C000179030 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| C000179030 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179030 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000179030 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000179030 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000179030 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000179030 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000232882 | Equity | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.60% |
| C000232882 | Fixed Income | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000232882 | Cash | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000232882 | Sector Other Net Line | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.40% |
| C000232882 | SectorShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000232882 | SectorExchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9% |
| C000232882 | SectorMutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| C000232882 | SectorAffiliated Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.30% |
| C000232882 | SectorSoftware | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000232882 | SectorCapital Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000232882 | SectorBanks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000232882 | SectorSemiconductors & Semiconductor Equipment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000232882 | SectorInteractive Media & Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000232882 | SectorOil, Gas & Consumable Fuels | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000232882 | SectorFinancial Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000232882 | SectorInsurance | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000232882 | AIA U.S. Large Cap Core ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Core ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000232882 | AIA U.S. Large Cap Value ESG SegmentFR_TSR_AT_ AIA U.S. Large Cap Value ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000232882 | AIA U.S. Small/Mid Cap ESG SegmentFR_TSR_AT_ AIA U.S. Small/Mid Cap ESG Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000232882 | Harris Associates Large Cap Value SegmentFR_TSR_AT_ Harris Associates Large Cap Value Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| C000232882 | Loomis Sayles All Cap Growth SegmentFR_TSR_AT_ Loomis Sayles All Cap Growth Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.50% |
| C000232882 | Mirova International Sustainable Equity FundFR_TSR_AT_ Mirova International Sustainable Equity Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000232882 | WCM Focused Emerging Markets FundFR_TSR_AT_ WCM Focused Emerging Markets Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000232882 | WCM Focused International Growth FundFR_TSR_AT_ WCM Focused International Growth Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000232882 | Loomis Sayles Core Fixed Income SegmentFR_TSR_AT_ Loomis Sayles Core Fixed Income Segment | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000232882 | Mirova Global Green Bond FundFR_TSR_AT_ Mirova Global Green Bond Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000232882 | AIA International Developed Markets Equity ESG SegmentFR_TSR_AT_ AIA International Developed Markets | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
