v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Forethought Variable Insurance Trust
Entity Central Index Key 0001580353
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
C000165348  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Allocation Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Allocation Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$18
0.34%
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.34%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 55,147,636
Holdings Count | Holding 14
InvestmentCompanyPortfolioTurnover 28.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$55,147,636
Total number of portfolio holdings
14
Period portfolio turnover rate
28%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Exchange Traded Funds - Equity Funds
61.2%
Exchange Traded Funds - Debt Funds
37.9%
Short-Term Investments
0.7%
Other Assets Less Liabilities - Net
0.2%
Total
100.0%
C000165349  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Allocation Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Allocation Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$31
0.59%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.59%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 55,147,636
Holdings Count | Holding 14
InvestmentCompanyPortfolioTurnover 28.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$55,147,636
Total number of portfolio holdings
14
Period portfolio turnover rate
28%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Exchange Traded Funds - Equity Funds
61.2%
Exchange Traded Funds - Debt Funds
37.9%
Short-Term Investments
0.7%
Other Assets Less Liabilities - Net
0.2%
Total
100.0%
C000165363  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Core Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Core Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$27
0.51%
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.51%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 688,728,068
Holdings Count | Holding 270
InvestmentCompanyPortfolioTurnover 47.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$688,728,068
Total number of portfolio holdings
270
Period portfolio turnover rate
47%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
36.8%
Common Stocks - Communications
15.8%
Common Stocks - Financial
11.6%
Common Stocks - Consumer, Non-cyclical
11.6%
Common Stocks - Industrial
9.9%
Common Stocks - Other
12.9%
Short-Term Investments
1.4%
Other Assets Less Liabilities - Net
0.0%Footnote Reference†
Total
100.0%
FootnoteDescription
Footnote†
Represents less than 0.05%.
C000165364  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Core Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Core Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$40
0.76%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.76%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 688,728,068
Holdings Count | Holding 270
InvestmentCompanyPortfolioTurnover 47.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$688,728,068
Total number of portfolio holdings
270
Period portfolio turnover rate
47%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
36.8%
Common Stocks - Communications
15.8%
Common Stocks - Financial
11.6%
Common Stocks - Consumer, Non-cyclical
11.6%
Common Stocks - Industrial
9.9%
Common Stocks - Other
12.9%
Short-Term Investments
1.4%
Other Assets Less Liabilities - Net
0.0%Footnote Reference†
Total
100.0%
FootnoteDescription
Footnote†
Represents less than 0.05%.
C000165366  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Growth Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Growth Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$26
0.50%
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.50%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 103,309,025
Holdings Count | Holding 139
InvestmentCompanyPortfolioTurnover 50.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$103,309,025
Total number of portfolio holdings
139
Period portfolio turnover rate
50%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
47.2%
Common Stocks - Communications
23.1%
Common Stocks - Industrial
11.8%
Common Stocks - Consumer, Non-cyclical
6.5%
Common Stocks - Financial
4.6%
Common Stocks - Other
4.9%
Short-Term Investments
2.4%
Other Assets Less Liabilities - Net
(0.5)%
Total
100.0%
C000165367  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Growth Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Growth Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$39
0.75%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.75%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 103,309,025
Holdings Count | Holding 139
InvestmentCompanyPortfolioTurnover 50.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$103,309,025
Total number of portfolio holdings
139
Period portfolio turnover rate
50%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
47.2%
Common Stocks - Communications
23.1%
Common Stocks - Industrial
11.8%
Common Stocks - Consumer, Non-cyclical
6.5%
Common Stocks - Financial
4.6%
Common Stocks - Other
4.9%
Short-Term Investments
2.4%
Other Assets Less Liabilities - Net
(0.5)%
Total
100.0%
C000165369  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined International Core Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined International Core Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$42
0.79%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.79%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 154,198,687
Holdings Count | Holding 645
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$154,198,687
Total number of portfolio holdings
645
Period portfolio turnover rate
23%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Country
% of Net Assets
United States
15.9%
Japan
13.4%
South Korea
7.8%
Canada
7.3%
United Kingdom
7.2%
China
6.2%
France
5.4%
Germany
5.0%
Other Country
30.1%
Other Assets Less Liabilities - Net
1.7%
Total
100.0%
C000165370  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined International Core Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined International Core Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$55
1.04%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.04%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 154,198,687
Holdings Count | Holding 645
InvestmentCompanyPortfolioTurnover 23.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$154,198,687
Total number of portfolio holdings
645
Period portfolio turnover rate
23%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Country
% of Net Assets
United States
15.9%
Japan
13.4%
South Korea
7.8%
Canada
7.3%
United Kingdom
7.2%
China
6.2%
France
5.4%
Germany
5.0%
Other Country
30.1%
Other Assets Less Liabilities - Net
1.7%
Total
100.0%
C000165372  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Mid Cap Growth Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Mid Cap Growth Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$35
0.67%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.67%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 262,451,553
Holdings Count | Holding 319
InvestmentCompanyPortfolioTurnover 66.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$262,451,553
Total number of portfolio holdings
319
Period portfolio turnover rate
66%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
29.0%
Common Stocks - Industrial
17.4%
Common Stocks - Consumer, Non-cyclical
16.4%
Common Stocks - Consumer, Cyclical
13.8%
Common Stocks - Communications
8.7%
Common Stocks - Other
13.2%
Short-Term Investments
1.3%
Rights
0.0%Footnote Reference†
Other Assets Less Liabilities - Net
0.2%
Total
100.0%
FootnoteDescription
Footnote†
Represents less than 0.05%.
C000165373  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Mid Cap Growth Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Mid Cap Growth Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$48
0.92%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.92%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 262,451,553
Holdings Count | Holding 319
InvestmentCompanyPortfolioTurnover 66.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$262,451,553
Total number of portfolio holdings
319
Period portfolio turnover rate
66%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Technology
29.0%
Common Stocks - Industrial
17.4%
Common Stocks - Consumer, Non-cyclical
16.4%
Common Stocks - Consumer, Cyclical
13.8%
Common Stocks - Communications
8.7%
Common Stocks - Other
13.2%
Short-Term Investments
1.3%
Rights
0.0%Footnote Reference†
Other Assets Less Liabilities - Net
0.2%
Total
100.0%
FootnoteDescription
Footnote†
Represents less than 0.05%.
C000165381  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Value Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Value Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$31
0.58%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.58%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 245,699,099
Holdings Count | Holding 386
InvestmentCompanyPortfolioTurnover 63.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$245,699,099
Total number of portfolio holdings
386
Period portfolio turnover rate
63%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Financial
20.7%
Common Stocks - Consumer, Non-cyclical
17.5%
Common Stocks - Technology
17.3%
Common Stocks - Industrial
12.4%
Common Stocks - Communications
11.1%
Common Stocks - Other
19.6%
Short-Term Investments
1.3%
Other Assets Less Liabilities - Net
0.1%
Total
100.0%
C000165382  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock Disciplined Value Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock Disciplined Value Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$45
0.83%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.83%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 245,699,099
Holdings Count | Holding 386
InvestmentCompanyPortfolioTurnover 63.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$245,699,099
Total number of portfolio holdings
386
Period portfolio turnover rate
63%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Common Stocks - Financial
20.7%
Common Stocks - Consumer, Non-cyclical
17.5%
Common Stocks - Technology
17.3%
Common Stocks - Industrial
12.4%
Common Stocks - Communications
11.1%
Common Stocks - Other
19.6%
Short-Term Investments
1.3%
Other Assets Less Liabilities - Net
0.1%
Total
100.0%
C000165384  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock High Yield Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock High Yield Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$32
0.64%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.64%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 41,586,633
Holdings Count | Holding 419
InvestmentCompanyPortfolioTurnover 37.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$41,586,633
Total number of portfolio holdings
419
Period portfolio turnover rate
37%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Corporate Bonds and Notes - Financial
20.2%
Corporate Bonds and Notes - Communications
19.3%
Corporate Bonds and Notes - Energy
14.2%
Corporate Bonds and Notes - Consumer, Cyclical
13.0%
Corporate Bonds and Notes - Consumer, Non-cyclical
7.8%
Corporate Bonds and Notes - Other
23.9%
Short-Term Investments
0.4%
Other Assets Less Liabilities - Net
1.2%
Total
100.0%
C000165385  
Shareholder Report [Line Items]  
Fund Name Global Atlantic BlackRock High Yield Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic BlackRock High Yield Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class II
$44
0.89%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.89%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 41,586,633
Holdings Count | Holding 419
InvestmentCompanyPortfolioTurnover 37.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$41,586,633
Total number of portfolio holdings
419
Period portfolio turnover rate
37%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Corporate Bonds and Notes - Financial
20.2%
Corporate Bonds and Notes - Communications
19.3%
Corporate Bonds and Notes - Energy
14.2%
Corporate Bonds and Notes - Consumer, Cyclical
13.0%
Corporate Bonds and Notes - Consumer, Non-cyclical
7.8%
Corporate Bonds and Notes - Other
23.9%
Short-Term Investments
0.4%
Other Assets Less Liabilities - Net
1.2%
Total
100.0%
C000165351  
Shareholder Report [Line Items]  
Fund Name Global Atlantic Goldman Sachs Core Fixed Income Portfolio
No Trading Symbol [Flag] true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Global Atlantic Goldman Sachs Core Fixed Income Portfolio (the "Fund" or "Portfolio") for the period of January 1, 2026 to June 30, 2026.
Additional Information [Text Block] You can find additional information about the Fund at https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/. You can also request this information by contacting us at 1⁠ ⁠(877)⁠ ⁠355‑1820.
Additional Information Phone Number 1⁠ ⁠(877)⁠ ⁠355‑1820
Additional Information Website https://globalatlantic.onlineprospectus.net/GlobalAtlantic/portfolios/
Expenses [Text Block]

WHAT WERE THE FUND COSTS FOR THE PERIOD?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class
Costs of a $10,000 investment
Costs paid as a % of a $10,000 investment
Class I
$25
0.50%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.50%
Updated Performance Information Location [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, Fund holdings and proxy voting information, at the website address or contact number included at the beginning of this shareholder report.
AssetsNet $ 55,743,352
Holdings Count | Holding 405
InvestmentCompanyPortfolioTurnover 96.00%
Additional Fund Statistics [Text Block]

KEY FUND STATISTICS

The following table outlines key Fund statistics that you should pay attention to. 

Table Summary
Fund net assets
$55,743,352
Total number of portfolio holdings
405
Period portfolio turnover rate
96%
Holdings [Text Block]

ASSET CLASS ALLOCATION

The table below shows the investment makeup of the Fund.

Table Summary
Asset Class
% of Net Assets
Corporate Bonds and Notes
35.6%
Agency Mortgage Backed Securities
31.6%
Asset Backed and Commercial Backed Securities
22.9%
U.S. Treasury Securities and Agency Bonds
14.1%
Sovereign Debts
1.4%
Other Investments
1.0%
Short-Term Investments
0.5%
Other Assets Less Liabilities - Net
(7.1)%
Total
100.0%