Investment Strategy	Sep. 16, 2026
State Street My2036 Corporate Bond ETF
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">The Fund's Principal Investment Strategy</span>
Strategy Narrative [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds. The Fund will provide shareholders with at least sixty (60) days' notice prior to any change in its 80% investment policy. The Fund primarily invests in corporate bonds maturing in the year 2036, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date. The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2036, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity.The Fund primarily invests in U.S. dollar denominated corporate bonds rated investment grade at the time of purchase. Investment grade is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 10% of its net assets in corporate bonds rated below investment grade at the time of purchase (commonly known as “junk” bonds). As of the date of this Prospectus, it is expected that a significant portion of the Fund will comprise securities of companies in the financial, industrial and utilities sectors, although this may change from time to time.The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality. In the Fund's target maturity year, proceeds from corporate bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in corporate bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investment in corporate bonds may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware, top-down approach combined with bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser develops long-term structural and intermediate-term cyclical views by analyzing macroeconomic factors, financial conditions, as well as consumer, industry, and sector trends. Individual securities are then identified for investment through rigorous fundamental research, including financial analysis of the applicable cash flows, capital structure, industry, and issuer-specific fundamentals. The Adviser's analysis also includes an assessment of relative value and liquidity trends, which are supported by the performance of similar instruments through economic and market cycles. The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities. The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in U.S. dollar denominated corporate bonds rated investment grade at the time of purchase. Investment grade is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in corporate bonds maturing in the year 2036, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year.
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds.
State Street My2032 Municipal Bond ETF
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">The Fund's Principal Investment Strategy</span>
Strategy Narrative [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in investments the income of which is exempt from regular federal income tax. Any change to this fundamental 80% investment policy will require shareholder approval. The Fund primarily invests in municipal bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in municipal bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date. The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2032, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity.The Fund primarily invests in U.S. dollar denominated municipal bonds issued by U.S. states, the District of Columbia, or local governments or agencies, the interest of which is exempt from U.S. federal income taxes and the federal alternative minimum tax. The bonds are primarily rated investment grade at the time of purchase, which is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 10% of its net assets in municipal bonds rated below investment grade at the time of purchase (commonly known as “junk” bonds).The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality. In the Fund's target maturity year, proceeds from municipal bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in municipal bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investments the income of which is exempt from federal income tax may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware, top-down approach combined with bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser develops long-term structural and intermediate-term cyclical views by analyzing macroeconomic factors, financial conditions, as well as consumer, industry, and sector trends. Individual securities are then identified for investment through rigorous fundamental research, including financial analysis of the applicable cash flows, capital structure, industry, and issuer-specific fundamentals. The Adviser's analysis also includes an assessment of relative value and liquidity trends, which are supported by the performance of similar instruments through economic and market cycles. The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities. The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in U.S. dollar denominated municipal bonds issued by U.S. states, the District of Columbia, or local governments or agencies, the interest of which is exempt from U.S. federal income taxes and the federal alternative minimum tax. The bonds are primarily rated investment grade at the time of purchase, which is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in municipal bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in municipal bonds with maturity dates within six months prior to or after the Fund's target maturity year.
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in investments the income of which is exempt from regular federal income tax.
State Street My2032 High Yield Corporate Bond ETF
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">The Fund's Principal Investment Strategy</span>
Strategy Narrative [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds rated below investment grade (commonly referred to as “high yield” or “junk” bonds). The Fund will provide shareholders with at least sixty (60) days' notice prior to any change in its 80% investment policy. The Fund primarily invests in high yield corporate bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in high yield corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date.The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2032, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity. The Fund primarily invests in U.S. dollar denominated corporate bonds rated below investment grade at the time of purchase. Below investment grade is defined as bonds rated BB+ or lower by S&P Global Ratings and/or Fitch Ratings Inc., Ba1 or lower by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 20% of its net assets in corporate bonds rated investment grade at the time of purchase. As of the date of this Prospectus, it is expected that a significant portion of the Fund will comprise securities of companies in the financial, industrial and utilities sectors, although this may change from time to time.The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality.In the Fund's target maturity year, proceeds from corporate bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in corporate bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investment in high yield corporate bonds may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware approach focusing on bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser chooses individual securities identified for investment through analyzing relative value, issuer fundamentals, liquidity, price trends and other factors which are supported by the performance of similar instruments through economic and market cycles.The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities.The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.
Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in U.S. dollar denominated corporate bonds rated below investment grade at the time of purchase. Below investment grade is defined as bonds rated BB+ or lower by S&P Global Ratings and/or Fitch Ratings Inc., Ba1 or lower by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.
Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]	The Fund primarily invests in high yield corporate bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in high yield corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year.
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds rated below investment grade (commonly referred to as “high yield” or “junk” bonds).

Investment Strategy

Sep. 16, 2026

The Fund's Principal Investment Strategy

Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds. The Fund will provide shareholders with at least sixty (60) days' notice prior to any change in its 80% investment policy. The Fund primarily invests in corporate bonds maturing in the year 2036, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date. The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2036, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity.The Fund primarily invests in U.S. dollar denominated corporate bonds rated investment grade at the time of purchase. Investment grade is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 10% of its net assets in corporate bonds rated below investment grade at the time of purchase (commonly known as “junk” bonds). As of the date of this Prospectus, it is expected that a significant portion of the Fund will comprise securities of companies in the financial, industrial and utilities sectors, although this may change from time to time.The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality. In the Fund's target maturity year, proceeds from corporate bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in corporate bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investment in corporate bonds may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware, top-down approach combined with bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser develops long-term structural and intermediate-term cyclical views by analyzing macroeconomic factors, financial conditions, as well as consumer, industry, and sector trends. Individual securities are then identified for investment through rigorous fundamental research, including financial analysis of the applicable cash flows, capital structure, industry, and issuer-specific fundamentals. The Adviser's analysis also includes an assessment of relative value and liquidity trends, which are supported by the performance of similar instruments through economic and market cycles. The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities. The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in U.S. dollar denominated corporate bonds rated investment grade at the time of purchase. Investment grade is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.

Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in corporate bonds maturing in the year 2036, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]

State Street My2032 Municipal Bond ETF

Prospectus [Line Items]

Strategy [Heading]

The Fund's Principal Investment Strategy

Strategy Narrative [Text Block]

Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in investments the income of which is exempt from regular federal income tax. Any change to this fundamental 80% investment policy will require shareholder approval. The Fund primarily invests in municipal bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in municipal bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date. The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2032, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity.The Fund primarily invests in U.S. dollar denominated municipal bonds issued by U.S. states, the District of Columbia, or local governments or agencies, the interest of which is exempt from U.S. federal income taxes and the federal alternative minimum tax. The bonds are primarily rated investment grade at the time of purchase, which is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 10% of its net assets in municipal bonds rated below investment grade at the time of purchase (commonly known as “junk” bonds).The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality. In the Fund's target maturity year, proceeds from municipal bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in municipal bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investments the income of which is exempt from federal income tax may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware, top-down approach combined with bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser develops long-term structural and intermediate-term cyclical views by analyzing macroeconomic factors, financial conditions, as well as consumer, industry, and sector trends. Individual securities are then identified for investment through rigorous fundamental research, including financial analysis of the applicable cash flows, capital structure, industry, and issuer-specific fundamentals. The Adviser's analysis also includes an assessment of relative value and liquidity trends, which are supported by the performance of similar instruments through economic and market cycles. The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities. The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in U.S. dollar denominated municipal bonds issued by U.S. states, the District of Columbia, or local governments or agencies, the interest of which is exempt from U.S. federal income taxes and the federal alternative minimum tax. The bonds are primarily rated investment grade at the time of purchase, which is defined as bonds rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings Inc., Baa3 or higher by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.

Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in municipal bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in municipal bonds with maturity dates within six months prior to or after the Fund's target maturity year.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]

State Street My2032 High Yield Corporate Bond ETF

Prospectus [Line Items]

Strategy [Heading]

The Fund's Principal Investment Strategy

Strategy Narrative [Text Block]

Under normal circumstances, SSGA Funds Management, Inc. (the “Adviser” or “SSGA FM”) invests at least 80% of the Fund's net assets (plus borrowings for investment purposes) in corporate bonds rated below investment grade (commonly referred to as “high yield” or “junk” bonds). The Fund will provide shareholders with at least sixty (60) days' notice prior to any change in its 80% investment policy. The Fund primarily invests in high yield corporate bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in high yield corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year. An embedded issuer call option means that the bond's issuer has the right to redeem a bond prior to its designated maturity date.The Fund is part of the MyIncome suite of target maturity bond ETFs and is designed to terminate on or about December 15, 2032, at which point the Fund will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to distribute any predetermined amount at maturity. The Fund primarily invests in U.S. dollar denominated corporate bonds rated below investment grade at the time of purchase. Below investment grade is defined as bonds rated BB+ or lower by S&P Global Ratings and/or Fitch Ratings Inc., Ba1 or lower by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser. The Fund may invest up to 20% of its net assets in corporate bonds rated investment grade at the time of purchase. As of the date of this Prospectus, it is expected that a significant portion of the Fund will comprise securities of companies in the financial, industrial and utilities sectors, although this may change from time to time.The Fund may use derivative instruments (primarily futures contracts, interest rate and credit default swaps, and options on treasury futures) to manage yield, interest rate exposure (also known as duration), weighted average maturity, and exposure to credit quality.In the Fund's target maturity year, proceeds from corporate bonds maturing prior to the Fund's liquidation date may be reinvested in cash and cash equivalents, including, but not limited to, shares of money market funds (including money market funds advised by the Adviser). The Fund seeks to remain fully invested in corporate bonds to the extent possible; however, leading up to the Fund's target maturity date, the Fund's cash and cash equivalents holdings may increase and the Fund's investment in high yield corporate bonds may be less than 80% of the Fund's net assets.The Adviser actively manages the Fund using a risk-aware approach focusing on bottom-up security selection to construct a portfolio that seeks to overweight the most attractive sectors and issuers. The Adviser chooses individual securities identified for investment through analyzing relative value, issuer fundamentals, liquidity, price trends and other factors which are supported by the performance of similar instruments through economic and market cycles.The Adviser may consider selling a security when one of the selection characteristics no longer applies, when the Adviser believes that the valuation has become excessive, or when more attractive alternatives are identified. The Fund may engage in active and frequent trading of its portfolio securities.The Fund should not be confused with a target date fund, which has assets that are managed according to a particular investment strategy that converts fund assets to conservative investments over time.

Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in U.S. dollar denominated corporate bonds rated below investment grade at the time of purchase. Below investment grade is defined as bonds rated BB+ or lower by S&P Global Ratings and/or Fitch Ratings Inc., Ba1 or lower by Moody's Investors Service, Inc., or equivalent ratings by another registered nationally recognized statistical rating organization (“NRSRO”), or, if unrated by an NRSRO, of comparable quality as determined by the Adviser.

Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block]

The Fund primarily invests in high yield corporate bonds maturing in the year 2032, which may include bonds with embedded issuer call options falling within that year. The Fund may also invest in high yield corporate bonds with maturity dates within six months prior to or after the Fund's target maturity year.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]