This semi-annual shareholder report contains important information about the AB Global Dynamic Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

<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; text-align-last: auto; white-space-collapse: preserve-breaks;">https://dfinview.com/BHFT</span>

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$47	0.91%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.91%

^[1]

AssetsNet

$ 1,708,164,776

Holdings Count | Holding

1,801

Advisory Fees Paid, Amount

$ 5,257,611

InvestmentCompanyPortfolioTurnover

7.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,708,164,776
# of Portfolio Investments1,801
Portfolio Turnover Rate7%
Total Advisory Fees Paid$5,257,611

Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	19.9
U.S. Treasury Bonds	9.0
French Republic Government Bonds OAT	1.4
Federal National Mortgage Association	1.2
Italy Buoni Poliennali Del Tesoro	1.1
U.K. Gilts	0.8
Bundesrepublik Deutschland Bundesanleihe	0.6
Japan Government Two Year Bonds	0.6
Spain Government Bonds	0.6
Federal Home Loan Banks	0.4

Top 10 Countries

Table Summary
Value	Value
Switzerland	1.2
Spain	1.3
Netherlands	1.3
Italy	1.6
Australia	1.7
Germany	2.6
United Kingdom	2.8
France	2.9
Japan	6.2
United States	71.1

Asset Allocation

Table Summary
Value	Value
Rights	0.0^{Footnote Reference*}
Investment Companies	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Short-Term Investments	1.3
Foreign Government	8.4
U.S. Treasury & Government Agencies	30.9
Common Stocks	58.1

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	2.7
Apple, Inc.	2.4
Alphabet, Inc.	2.1
Microsoft Corp.	1.5
Amazon.com, Inc.	1.3
Broadcom, Inc.	1.0
Micron Technology, Inc.	0.7
Meta Platforms, Inc.	0.7
Tesla, Inc.	0.7
ASML Holding NV	0.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

<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: justify; text-align-last: left; white-space-collapse: preserve-breaks;">https://dfinview.com/BHFT</span>

C000210967

Shareholder Report [Line Items]

Fund Name

AB International Bond Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the AB International Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$32	0.63%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.63%

^[2]

AssetsNet

$ 394,230,651

Holdings Count | Holding

693

Advisory Fees Paid, Amount

$ 1,021,962

InvestmentCompanyPortfolioTurnover

60.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$394,230,651
# of Portfolio Investments693
Portfolio Turnover Rate60%
Total Advisory Fees Paid$1,021,962

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Asset-Backed Securities	1.8
Non-Agency Mortgage-Backed Securities	1.9
U.S. Treasury & Government Agencies	2.1
Short-Term Investments	3.2
Corporate Bonds & Notes	30.1
Foreign Government	58.6

Top 10 Countries

Table Summary
Value	Value
Turkey	2.9
Brazil	2.9
France	3.8
China	3.9
Mexico	4.4
United Kingdom	5.9
Canada	6.0
Colombia	6.2
Japan	7.5
United States	8.1

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Canada Government Bonds	3.9
China Government Bonds	3.6
Japan Government Five Year Bonds	2.9
U.K. Gilts	2.8
Dominican Republic International Bonds	2.3
Colombia Government International Bonds	2.2
U.S. Treasury Inflation-Indexed Notes	2.1
Ecopetrol SA	2.0
Brazil Notas do Tesouro Nacional	2.0
Turkiye Government International Bonds	1.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000210964

Shareholder Report [Line Items]

Fund Name

AB International Bond Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the AB International Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$44	0.88%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 44

Expense Ratio, Percent

0.88%

^[3]

AssetsNet

$ 394,230,651

Holdings Count | Holding

693

Advisory Fees Paid, Amount

$ 1,021,962

InvestmentCompanyPortfolioTurnover

60.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$394,230,651
# of Portfolio Investments693
Portfolio Turnover Rate60%
Total Advisory Fees Paid$1,021,962

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Asset-Backed Securities	1.8
Non-Agency Mortgage-Backed Securities	1.9
U.S. Treasury & Government Agencies	2.1
Short-Term Investments	3.2
Corporate Bonds & Notes	30.1
Foreign Government	58.6

Top 10 Countries

Table Summary
Value	Value
Turkey	2.9
Brazil	2.9
France	3.8
China	3.9
Mexico	4.4
United Kingdom	5.9
Canada	6.0
Colombia	6.2
Japan	7.5
United States	8.1

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Canada Government Bonds	3.9
China Government Bonds	3.6
Japan Government Five Year Bonds	2.9
U.K. Gilts	2.8
Dominican Republic International Bonds	2.3
Colombia Government International Bonds	2.2
U.S. Treasury Inflation-Indexed Notes	2.1
Ecopetrol SA	2.0
Brazil Notas do Tesouro Nacional	2.0
Turkiye Government International Bonds	1.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030705

Shareholder Report [Line Items]

Fund Name

Allspring Mid Cap Value Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Allspring Mid Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$40	0.75%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.75%

^[4]

AssetsNet

$ 304,838,644

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 995,151

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$304,838,644
# of Portfolio Investments90
Portfolio Turnover Rate21%
Total Advisory Fees Paid$995,151

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	3.2
Consumer Discretionary	5.4
Consumer Staples	6.3
Energy	7.9
Materials	8.0
Utilities	8.3
Health Care	11.8
Financials	12.3
Information Technology	13.6
Industrials	20.6

Top Countries

Table Summary
Value	Value
Ireland	1.8
Canada	2.0
United States	94.5

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
American Electric Power Co., Inc.	3.4
Qnity Electronics, Inc.	3.3
Labcorp Holdings, Inc.	3.2
Keysight Technologies, Inc.	3.2
FirstEnergy Corp.	3.0
Republic Services, Inc.	3.0
Church & Dwight Co., Inc.	2.9
RPM International, Inc.	2.7
Fifth Third Bancorp	2.6
CDW Corp.	2.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030706

Shareholder Report [Line Items]

Fund Name

Allspring Mid Cap Value Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Allspring Mid Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$53	1.00%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 53

Expense Ratio, Percent

1.00%

^[5]

AssetsNet

$ 304,838,644

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 995,151

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$304,838,644
# of Portfolio Investments90
Portfolio Turnover Rate21%
Total Advisory Fees Paid$995,151

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	3.2
Consumer Discretionary	5.4
Consumer Staples	6.3
Energy	7.9
Materials	8.0
Utilities	8.3
Health Care	11.8
Financials	12.3
Information Technology	13.6
Industrials	20.6

Top Countries

Table Summary
Value	Value
Ireland	1.8
Canada	2.0
United States	94.5

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
American Electric Power Co., Inc.	3.4
Qnity Electronics, Inc.	3.3
Labcorp Holdings, Inc.	3.2
Keysight Technologies, Inc.	3.2
FirstEnergy Corp.	3.0
Republic Services, Inc.	3.0
Church & Dwight Co., Inc.	2.9
RPM International, Inc.	2.7
Fifth Third Bancorp	2.6
CDW Corp.	2.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063063

Shareholder Report [Line Items]

Fund Name

American Funds<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Aggressive Allocation Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Aggressive Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$17	0.32%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.32%

^[6]

AssetsNet

$ 2,947,632,777

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 907,887

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,947,632,777
# of Portfolio Investments14
Portfolio Turnover Rate5%
Total Advisory Fees Paid$907,887

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Global Fixed Income	1.4
High Yield Fixed Income	1.9
Emerging Market Equities	3.0
Global Equities	5.1
Investment Grade Fixed Income	6.2
International Developed Market Equities	20.0
U.S. Large Cap Equities	62.5

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds AMCAP Fund, Class R-6	11.6
American Funds Fundamental Investors Fund, Class R-6	11.1
American Funds International Growth & Income Fund, Class R-6	11.0
American Funds Growth Fund, Class 1	10.6
American Funds Growth-Income Fund, Class 1	10.1
American Funds Washington Mutual Investors Fund, Class 1	10.1
American Funds American Mutual Fund, Class R-6	9.0
American Funds EUPAC Fund, Class 1	9.0
American Funds Smallcap World Fund, Inc., Class R-6	5.1
American Funds The Bond Fund of America, Class 1	4.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063064

Shareholder Report [Line Items]

Fund Name

Class Name

Class C

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Aggressive Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$32	0.62%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.62%

^[7]

AssetsNet

$ 2,947,632,777

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 907,887

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,947,632,777
# of Portfolio Investments14
Portfolio Turnover Rate5%
Total Advisory Fees Paid$907,887

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Global Fixed Income	1.4
High Yield Fixed Income	1.9
Emerging Market Equities	3.0
Global Equities	5.1
Investment Grade Fixed Income	6.2
International Developed Market Equities	20.0
U.S. Large Cap Equities	62.5

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds AMCAP Fund, Class R-6	11.6
American Funds Fundamental Investors Fund, Class R-6	11.1
American Funds International Growth & Income Fund, Class R-6	11.0
American Funds Growth Fund, Class 1	10.6
American Funds Growth-Income Fund, Class 1	10.1
American Funds Washington Mutual Investors Fund, Class 1	10.1
American Funds American Mutual Fund, Class R-6	9.0
American Funds EUPAC Fund, Class 1	9.0
American Funds Smallcap World Fund, Inc., Class R-6	5.1
American Funds The Bond Fund of America, Class 1	4.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063060

Shareholder Report [Line Items]

Fund Name

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Balanced Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$16	0.32%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 16

Expense Ratio, Percent

0.32%

^[8]

AssetsNet

$ 4,001,460,998

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 1,173,940

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$4,001,460,998
# of Portfolio Investments14
Portfolio Turnover Rate4%
Total Advisory Fees Paid$1,173,940

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Emerging Market Equities	2.0
Global Fixed Income	2.7
Global Equities	3.1
High Yield Fixed Income	4.4
International Developed Market Equities	15.6
Investment Grade Fixed Income	22.9
U.S. Large Cap Equities	49.4

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds The Bond Fund of America, Class 1	12.8
American Funds U.S. Government Securities Fund, Class R-6	10.1
American Funds Growth-Income Fund, Class 1	9.2
American Funds International Growth & Income Fund, Class R-6	8.8
American Funds Growth Fund, Class 1	8.7
American Funds Fundamental Investors Fund, Class R-6	8.1
American Funds AMCAP Fund, Class R-6	8.1
American Funds Washington Mutual Investors Fund, Class 1	8.1
American Funds American Mutual Fund, Class R-6	7.1
American Funds EUPAC Fund, Class 1	6.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063061

Shareholder Report [Line Items]

Fund Name

Class Name

Class C

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Balanced Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$32	0.62%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.62%

^[9]

AssetsNet

$ 4,001,460,998

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 1,173,940

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$4,001,460,998
# of Portfolio Investments14
Portfolio Turnover Rate4%
Total Advisory Fees Paid$1,173,940

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Emerging Market Equities	2.0
Global Fixed Income	2.7
Global Equities	3.1
High Yield Fixed Income	4.4
International Developed Market Equities	15.6
Investment Grade Fixed Income	22.9
U.S. Large Cap Equities	49.4

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds The Bond Fund of America, Class 1	12.8
American Funds U.S. Government Securities Fund, Class R-6	10.1
American Funds Growth-Income Fund, Class 1	9.2
American Funds International Growth & Income Fund, Class R-6	8.8
American Funds Growth Fund, Class 1	8.7
American Funds Fundamental Investors Fund, Class R-6	8.1
American Funds AMCAP Fund, Class R-6	8.1
American Funds Washington Mutual Investors Fund, Class 1	8.1
American Funds American Mutual Fund, Class R-6	7.1
American Funds EUPAC Fund, Class 1	6.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030657

Shareholder Report [Line Items]

Fund Name

Class Name

Class C

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment. The expense table below reflects the expenses of both the American Funds Growth Portfolio (the "Feeder Fund") and the Master Fund.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$46	0.89%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 46

Expense Ratio, Percent

0.89%

^[10]

AssetsNet

$ 2,031,958,503

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 0

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,031,958,503
# of Portfolio Investments1
Portfolio Turnover Rate5%
Total Advisory Fees Paid$0

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	1.3
Materials	2.0
Energy	2.0
Consumer Staples	2.1
Financials	6.0
Industrials	8.0
Health Care	9.2
Consumer Discretionary	13.2
Communication Services	14.5
Information Technology	39.0

Top 10 Countries

Table Summary
Value	Value
Japan	0.2
Brazil	0.3
Mexico	0.4
France	0.4
United Kingdom	0.8
Netherlands	1.0
Taiwan	1.5
South Korea	1.9
Canada	3.0
United States	87.4

Largest Holdings [Text Block]

Top Equity Holdings

Table Summary
Meta Platforms, Inc.	6.2
Alphabet, Inc.	5.9
Tesla, Inc.	5.5
Micron Technology, Inc.	4.9
Broadcom, Inc.	4.6
NVIDIA Corp.	4.5
Microsoft Corp.	3.0
Visa, Inc.	2.1
Amazon.com, Inc.	2.0
SK hynix, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063057

Shareholder Report [Line Items]

Fund Name

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Moderate Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$17	0.34%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.34%

^[11]

AssetsNet

$ 1,880,175,044

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 654,400

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,880,175,044
# of Portfolio Investments14
Portfolio Turnover Rate4%
Total Advisory Fees Paid$654,400

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Emerging Market Equities	1.0
Global Equities	1.0
Global Fixed Income	3.5
High Yield Fixed Income	6.0
International Developed Market Equities	12.1
Investment Grade Fixed Income	36.9
U.S. Large Cap Equities	39.6

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds U.S. Government Securities Fund, Class R-6	18.7
American Funds The Bond Fund of America, Class 1	18.2
American Funds Growth-Income Fund, Class 1	8.1
American Funds Washington Mutual Investors Fund, Class 1	8.1
American Funds American Mutual Fund, Class R-6	8.1
American Funds International Growth & Income Fund, Class R-6	6.5
American Funds High-Income Trust Fund, Class R-6	6.0
American Funds EUPAC Fund, Class 1	5.6
American Funds Growth Fund, Class 1	5.1
American Funds AMCAP Fund, Class R-6	5.1

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063058

Shareholder Report [Line Items]

Fund Name

Class Name

Class C

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the American Funds^® Moderate Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$33	0.64%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 33

Expense Ratio, Percent

0.64%

^[12]

AssetsNet

$ 1,880,175,044

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 654,400

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,880,175,044
# of Portfolio Investments14
Portfolio Turnover Rate4%
Total Advisory Fees Paid$654,400

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Emerging Market Equities	1.0
Global Equities	1.0
Global Fixed Income	3.5
High Yield Fixed Income	6.0
International Developed Market Equities	12.1
Investment Grade Fixed Income	36.9
U.S. Large Cap Equities	39.6

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
American Funds U.S. Government Securities Fund, Class R-6	18.7
American Funds The Bond Fund of America, Class 1	18.2
American Funds Growth-Income Fund, Class 1	8.1
American Funds Washington Mutual Investors Fund, Class 1	8.1
American Funds American Mutual Fund, Class R-6	8.1
American Funds International Growth & Income Fund, Class R-6	6.5
American Funds High-Income Trust Fund, Class R-6	6.0
American Funds EUPAC Fund, Class 1	5.6
American Funds Growth Fund, Class 1	5.1
American Funds AMCAP Fund, Class R-6	5.1

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100078

Shareholder Report [Line Items]

Fund Name

BlackRock Global Tactical Strategies Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the BlackRock Global Tactical Strategies Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$45	0.88%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 45

Expense Ratio, Percent

0.88%

^[13]

AssetsNet

$ 2,825,138,029

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 8,653,587

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,825,138,029
# of Portfolio Investments82
Portfolio Turnover Rate3%
Total Advisory Fees Paid$8,653,587

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Estate Equities	2.0
U.S. Small Cap Equities	2.3
Commodities	4.4
U.S. Large Cap Equities	25.5
International Developed Market Equities	27.2
Investment Grade Fixed Income	31.3

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
iShares Core MSCI EAFE ETF	27.1
Vanguard Total Bond Market ETF	20.6
iShares Core U.S. Aggregate Bond ETF	14.7
iShares Core S&P 500 ETF	14.2
State Street Technology Select Sector SPDR ETF	3.8
iShares U.S. Real Estate ETF	2.0
State Street Financial Select Sector SPDR ETF	1.2
State Street Consumer Discretionary Select Sector SPDR ETF	1.0
State Street Industrial Select Sector SPDR ETF	1.0
State Street Communication Services Select Sector SPDR ETF	1.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030750

Shareholder Report [Line Items]

Fund Name

BlackRock High Yield Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the BlackRock High Yield Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$31	0.62%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 31

Expense Ratio, Percent

0.62%

^[14]

AssetsNet

$ 1,086,721,352

Holdings Count | Holding

1,279

Advisory Fees Paid, Amount

$ 3,040,865

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,086,721,352
# of Portfolio Investments1,279
Portfolio Turnover Rate28%
Total Advisory Fees Paid$3,040,865

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Chemicals	3.5
Pipelines	3.6
Oil & Gas	3.7
Software	3.8
Diversified Financial Services	3.9
Media	4.2
Electric	4.8
Insurance	5.6
Commercial Services	5.8
Telecommunications	10.2

Asset Allocation

Table Summary
Value	Value
Escrow Shares	0.0^{Footnote Reference*}
Warrants	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Convertible Preferred Stocks	0.2
Convertible Bonds	0.4
Common Stocks	0.8
Short-Term Investments	3.1
Floating Rate Loans	6.4
Corporate Bonds & Notes	88.4

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Level 3 Financing, Inc.	2.1
TransDigm, Inc.	1.7
HUB International Ltd.	1.6
Talen Energy Supply LLC	1.5
Beignet Investor LLC	1.4
Venture Global LNG, Inc.	1.3
1261229 BC Ltd.	1.2
Clear Channel Outdoor Holdings, Inc.	1.1
NRG Energy, Inc.	1.1
Meridian Arc Holdco LLC	1.1

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030751

Shareholder Report [Line Items]

Fund Name

BlackRock High Yield Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the BlackRock High Yield Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$44	0.87%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 44

Expense Ratio, Percent

0.87%

^[15]

AssetsNet

$ 1,086,721,352

Holdings Count | Holding

1,279

Advisory Fees Paid, Amount

$ 3,040,865

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,086,721,352
# of Portfolio Investments1,279
Portfolio Turnover Rate28%
Total Advisory Fees Paid$3,040,865

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Chemicals	3.5
Pipelines	3.6
Oil & Gas	3.7
Software	3.8
Diversified Financial Services	3.9
Media	4.2
Electric	4.8
Insurance	5.6
Commercial Services	5.8
Telecommunications	10.2

Asset Allocation

Table Summary
Value	Value
Escrow Shares	0.0^{Footnote Reference*}
Warrants	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Convertible Preferred Stocks	0.2
Convertible Bonds	0.4
Common Stocks	0.8
Short-Term Investments	3.1
Floating Rate Loans	6.4
Corporate Bonds & Notes	88.4

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Level 3 Financing, Inc.	2.1
TransDigm, Inc.	1.7
HUB International Ltd.	1.6
Talen Energy Supply LLC	1.5
Beignet Investor LLC	1.4
Venture Global LNG, Inc.	1.3
1261229 BC Ltd.	1.2
Clear Channel Outdoor Holdings, Inc.	1.1
NRG Energy, Inc.	1.1
Meridian Arc Holdco LLC	1.1

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030680

Shareholder Report [Line Items]

Fund Name

Brighthouse Asset Allocation 100 Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse Asset Allocation 100 Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$4	0.08%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.08%

^[16]

AssetsNet

$ 1,797,995,536

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 624,040

InvestmentCompanyPortfolioTurnover

9.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,797,995,536
# of Portfolio Investments30
Portfolio Turnover Rate9%
Total Advisory Fees Paid$624,040

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Estate Equities	3.0
Global Equities	4.3
U.S. Mid Cap Equities	4.5
Emerging Market Equities	5.6
U.S. Small Cap Equities	9.2
International Developed Market Equities	22.5
U.S. Large Cap Equities	50.9

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
Invesco Comstock Portfolio, Class A	6.3
MFS Value Portfolio, Class A	6.2
T. Rowe Price Large Cap Value Portfolio, Class A	6.1
Jennison Growth Portfolio, Class A	6.0
Loomis Sayles Growth Portfolio, Class A	5.9
State Street Emerging Markets Enhanced Index Portfolio (formerly, SSGA Emerging Markets Enhanced Index Portfolio), Class A	5.6
T. Rowe Price Large Cap Growth Portfolio, Class A	5.5
Harris Oakmark International Portfolio, Class A	5.3
BlackRock Capital Appreciation Portfolio, Class A	5.1
Brighthouse/Wellington Core Equity Opportunities Portfolio, Class A	5.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030681

Shareholder Report [Line Items]

Fund Name

Brighthouse Asset Allocation 100 Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse Asset Allocation 100 Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$17	0.33%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.33%

^[17]

AssetsNet

$ 1,797,995,536

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 624,040

InvestmentCompanyPortfolioTurnover

9.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,797,995,536
# of Portfolio Investments30
Portfolio Turnover Rate9%
Total Advisory Fees Paid$624,040

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Estate Equities	3.0
Global Equities	4.3
U.S. Mid Cap Equities	4.5
Emerging Market Equities	5.6
U.S. Small Cap Equities	9.2
International Developed Market Equities	22.5
U.S. Large Cap Equities	50.9

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
Invesco Comstock Portfolio, Class A	6.3
MFS Value Portfolio, Class A	6.2
T. Rowe Price Large Cap Value Portfolio, Class A	6.1
Jennison Growth Portfolio, Class A	6.0
Loomis Sayles Growth Portfolio, Class A	5.9
State Street Emerging Markets Enhanced Index Portfolio (formerly, SSGA Emerging Markets Enhanced Index Portfolio), Class A	5.6
T. Rowe Price Large Cap Growth Portfolio, Class A	5.5
Harris Oakmark International Portfolio, Class A	5.3
BlackRock Capital Appreciation Portfolio, Class A	5.1
Brighthouse/Wellington Core Equity Opportunities Portfolio, Class A	5.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100083

Shareholder Report [Line Items]

Fund Name

Brighthouse Balanced Plus Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse Balanced Plus Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$31	0.61%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 31

Expense Ratio, Percent

0.61%

^[18]

AssetsNet

$ 4,719,052,788

Holdings Count | Holding

117

Advisory Fees Paid, Amount

$ 5,736,244

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$4,719,052,788
# of Portfolio Investments117
Portfolio Turnover Rate21%
Total Advisory Fees Paid$5,736,244

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Estate Equities	0.9
Emerging Market Equities	1.9
International Fixed Income	2.2
Global Equities	2.3
U.S. Small Cap Equities	5.0
High Yield Fixed Income	5.6
U.S. Mid Cap Equities	5.6
International Developed Market Equities	12.7
U.S. Large Cap Equities	37.1
Investment Grade Fixed Income	68.9

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
U.S. Treasury Bonds	13.0
U.S. Treasury Notes	12.2
BlackRock Bond Income Portfolio, Class A	7.5
TCW Core Fixed Income Portfolio, Class A	6.1
PIMCO Total Return Portfolio, Class A	5.4
JPMorgan Core Bond Portfolio, Class A	4.4
Harris Oakmark International Portfolio, Class A	3.8
Western Asset Management U.S. Government Portfolio, Class A	3.4
Western Asset Management Strategic Bond Opportunities Portfolio, Class A	3.1
Baillie Gifford International Stock Portfolio, Class A	2.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030660

Shareholder Report [Line Items]

Fund Name

Brighthouse Small Cap Value Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse Small Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$41	0.76%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.76%

^[19]

AssetsNet

$ 731,344,946

Holdings Count | Holding

132

Advisory Fees Paid, Amount

$ 2,582,863

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$731,344,946
# of Portfolio Investments132
Portfolio Turnover Rate20%
Total Advisory Fees Paid$2,582,863

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	0.5
Communication Services	0.8
Energy	5.0
Consumer Staples	5.5
Health Care	6.7
Consumer Discretionary	8.5
Information Technology	13.7
Materials	14.4
Financials	20.2
Industrials	24.3

Top Countries

Table Summary
Value	Value
Monaco	0.6
Switzerland	0.6
Japan	0.7
Belgium	0.9
United Kingdom	2.1
United States	94.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Franklin Electric Co., Inc.	3.4
Innospec, Inc.	3.2
UMB Financial Corp.	3.1
Novanta, Inc.	3.0
Hancock Whitney Corp.	2.4
Southstate Bank Corp.	2.3
J&J Snack Foods Corp.	2.2
UFP Industries, Inc.	2.2
Alamo Group, Inc.	2.2
TriMas Corp.	2.1

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030661

Shareholder Report [Line Items]

Fund Name

Brighthouse Small Cap Value Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse Small Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$54	1.01%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 54

Expense Ratio, Percent

1.01%

^[20]

AssetsNet

$ 731,344,946

Holdings Count | Holding

132

Advisory Fees Paid, Amount

$ 2,582,863

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$731,344,946
# of Portfolio Investments132
Portfolio Turnover Rate20%
Total Advisory Fees Paid$2,582,863

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	0.5
Communication Services	0.8
Energy	5.0
Consumer Staples	5.5
Health Care	6.7
Consumer Discretionary	8.5
Information Technology	13.7
Materials	14.4
Financials	20.2
Industrials	24.3

Top Countries

Table Summary
Value	Value
Monaco	0.6
Switzerland	0.6
Japan	0.7
Belgium	0.9
United Kingdom	2.1
United States	94.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Franklin Electric Co., Inc.	3.4
Innospec, Inc.	3.2
UMB Financial Corp.	3.1
Novanta, Inc.	3.0
Hancock Whitney Corp.	2.4
Southstate Bank Corp.	2.3
J&J Snack Foods Corp.	2.2
UFP Industries, Inc.	2.2
Alamo Group, Inc.	2.2
TriMas Corp.	2.1

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000140956

Shareholder Report [Line Items]

Fund Name

Brighthouse/Artisan International Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Artisan International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$43	0.81%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.81%

^[21]

AssetsNet

$ 824,236,576

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,047,044

InvestmentCompanyPortfolioTurnover

52.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$824,236,576
# of Portfolio Investments81
Portfolio Turnover Rate52%
Total Advisory Fees Paid$3,047,044

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	2.4
Consumer Discretionary	2.6
Communication Services	2.8
Materials	3.6
Health Care	4.4
Information Technology	7.6
Consumer Staples	11.2
Utilities	11.4
Financials	23.7
Industrials	27.7

Top 10 Countries

Table Summary
Value	Value
Italy	3.2
Hong Kong	3.5
Taiwan	4.5
Germany	4.7
Switzerland	6.2
China	7.0
South Korea	7.7
Japan	8.2
France	12.0
United Kingdom	25.9

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co. Ltd.	4.5
National Grid PLC	4.4
UBS Group AG	4.3
Contemporary Amperex Technology Co. Ltd.	4.2
Tesco PLC	3.3
Safran SA	3.2
Air Liquide SA	3.0
HSBC Holdings PLC	2.9
British American Tobacco PLC	2.8
Tencent Holdings Ltd.	2.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000140957

Shareholder Report [Line Items]

Fund Name

Brighthouse/Artisan International Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Artisan International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$56	1.06%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 56

Expense Ratio, Percent

1.06%

^[22]

AssetsNet

$ 824,236,576

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,047,044

InvestmentCompanyPortfolioTurnover

52.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$824,236,576
# of Portfolio Investments81
Portfolio Turnover Rate52%
Total Advisory Fees Paid$3,047,044

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	2.4
Consumer Discretionary	2.6
Communication Services	2.8
Materials	3.6
Health Care	4.4
Information Technology	7.6
Consumer Staples	11.2
Utilities	11.4
Financials	23.7
Industrials	27.7

Top 10 Countries

Table Summary
Value	Value
Italy	3.2
Hong Kong	3.5
Taiwan	4.5
Germany	4.7
Switzerland	6.2
China	7.0
South Korea	7.7
Japan	8.2
France	12.0
United Kingdom	25.9

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co. Ltd.	4.5
National Grid PLC	4.4
UBS Group AG	4.3
Contemporary Amperex Technology Co. Ltd.	4.2
Tesco PLC	3.3
Safran SA	3.2
Air Liquide SA	3.0
HSBC Holdings PLC	2.9
British American Tobacco PLC	2.8
Tencent Holdings Ltd.	2.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000088087

Shareholder Report [Line Items]

Fund Name

Brighthouse/Eaton Vance Floating Rate Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Eaton Vance Floating Rate Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$35	0.71%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.71%

^[23]

AssetsNet

$ 507,141,729

Holdings Count | Holding

468

Advisory Fees Paid, Amount

$ 1,490,150

InvestmentCompanyPortfolioTurnover

24.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$507,141,729
# of Portfolio Investments468
Portfolio Turnover Rate24%
Total Advisory Fees Paid$1,490,150

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Retail	2.6
Computers	2.8
Asset-Backed - Other	3.0
Machinery-Diversified	3.3
Entertainment	4.1
Healthcare-Services	4.7
Diversified Financial Services	4.8
Insurance	5.9
Commercial Services	9.1
Software	11.7

Asset Allocation

Table Summary
Value	Value
Convertible Preferred Stocks	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Common Stocks	1.1
Corporate Bonds & Notes	2.9
Asset-Backed Securities	3.0
Short-Term Investments	7.3
Floating Rate Loans	89.1

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
TransDigm, Inc.	0.9
UKG, Inc.	0.9
Opal Bidco SAS	0.7
Quikrete Holdings, Inc.	0.7
EOC Borrower LLC	0.7
Brown Group Holding LLC	0.7
Voyager Parent LLC	0.7
AI Aqua Merger Sub, Inc.	0.6
Electronic Arts, Inc.	0.6
Caesars Entertainment, Inc.	0.6

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000088088

Shareholder Report [Line Items]

Fund Name

Brighthouse/Eaton Vance Floating Rate Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Eaton Vance Floating Rate Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$48	0.96%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.96%

^[24]

AssetsNet

$ 507,141,729

Holdings Count | Holding

468

Advisory Fees Paid, Amount

$ 1,490,150

InvestmentCompanyPortfolioTurnover

24.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$507,141,729
# of Portfolio Investments468
Portfolio Turnover Rate24%
Total Advisory Fees Paid$1,490,150

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Retail	2.6
Computers	2.8
Asset-Backed - Other	3.0
Machinery-Diversified	3.3
Entertainment	4.1
Healthcare-Services	4.7
Diversified Financial Services	4.8
Insurance	5.9
Commercial Services	9.1
Software	11.7

Asset Allocation

Table Summary
Value	Value
Convertible Preferred Stocks	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Common Stocks	1.1
Corporate Bonds & Notes	2.9
Asset-Backed Securities	3.0
Short-Term Investments	7.3
Floating Rate Loans	89.1

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
TransDigm, Inc.	0.9
UKG, Inc.	0.9
Opal Bidco SAS	0.7
Quikrete Holdings, Inc.	0.7
EOC Borrower LLC	0.7
Brown Group Holding LLC	0.7
Voyager Parent LLC	0.7
AI Aqua Merger Sub, Inc.	0.6
Electronic Arts, Inc.	0.6
Caesars Entertainment, Inc.	0.6

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100086

Shareholder Report [Line Items]

Fund Name

Brighthouse/Franklin Low Duration Total Return Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Franklin Low Duration Total Return Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$25	0.51%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 25

Expense Ratio, Percent

0.51%

^[25]

AssetsNet

$ 554,347,520

Holdings Count | Holding

680

Advisory Fees Paid, Amount

$ 1,208,223

InvestmentCompanyPortfolioTurnover

36.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$554,347,520
# of Portfolio Investments680
Portfolio Turnover Rate36%
Total Advisory Fees Paid$1,208,223

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Common Stocks	0.0^{Footnote Reference*}
Municipals	0.4
Foreign Government	2.0
Floating Rate Loans	2.3
Short-Term Investments	4.6
Agency Sponsored Mortgage-Backed Securities	9.7
Non-Agency Mortgage-Backed Securities	11.4
Asset-Backed Securities	15.7
U.S. Treasury & Government Agencies	16.5
Corporate Bonds & Notes	37.0

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	16.5
Federal Home Loan Mortgage Corp. REMICS	5.0
Federal National Mortgage Association REMICS	2.2
Morgan Stanley	1.3
Station Place Securitization Trust	1.1
BRAVO Residential Funding Trust	1.0
RR 14 Ltd.	1.0
Bank of America Corp.	0.9
OBX Trust	0.9
Citibank NA	0.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100087

Shareholder Report [Line Items]

Fund Name

Brighthouse/Franklin Low Duration Total Return Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$38	0.76%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.76%

^[26]

AssetsNet

$ 554,347,520

Holdings Count | Holding

680

Advisory Fees Paid, Amount

$ 1,208,223

InvestmentCompanyPortfolioTurnover

36.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$554,347,520
# of Portfolio Investments680
Portfolio Turnover Rate36%
Total Advisory Fees Paid$1,208,223

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Common Stocks	0.0^{Footnote Reference*}
Municipals	0.4
Foreign Government	2.0
Floating Rate Loans	2.3
Short-Term Investments	4.6
Agency Sponsored Mortgage-Backed Securities	9.7
Non-Agency Mortgage-Backed Securities	11.4
Asset-Backed Securities	15.7
U.S. Treasury & Government Agencies	16.5
Corporate Bonds & Notes	37.0

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	16.5
Federal Home Loan Mortgage Corp. REMICS	5.0
Federal National Mortgage Association REMICS	2.2
Morgan Stanley	1.3
Station Place Securitization Trust	1.1
BRAVO Residential Funding Trust	1.0
RR 14 Ltd.	1.0
Bank of America Corp.	0.9
OBX Trust	0.9
Citibank NA	0.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000075557

Shareholder Report [Line Items]

Fund Name

Brighthouse/Templeton International Bond Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Templeton International Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$35	0.70%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.70%

^[27]

AssetsNet

$ 343,646,911

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 964,381

InvestmentCompanyPortfolioTurnover

0.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$343,646,911
# of Portfolio Investments88
Portfolio Turnover Rate0%
Total Advisory Fees Paid$964,381

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Corporate Bonds & Notes	4.3
Short-Term Investments	14.8
Foreign Government	79.4

Top 10 Countries

Table Summary
Value	Value
Mexico	4.0
Spain	4.5
Panama	4.7
Norway	4.8
India	6.0
Egypt	6.7
South Africa	8.0
Brazil	8.4
Malaysia	9.2
Australia	10.8

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Malaysia Government Bonds	9.2
Brazil Notas do Tesouro Nacional	8.4
Republic of South Africa Government Bonds	8.0
India Government Bonds	6.0
Norway Government Bonds	4.8
Panama Government International Bonds	4.7
Spain Government Bonds	4.5
International Bank for Reconstruction & Development	4.3
Mexico Bonos	4.0
Queensland Treasury Corp.	4.0

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000075558

Shareholder Report [Line Items]

Fund Name

Brighthouse/Templeton International Bond Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Templeton International Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$48	0.95%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.95%

^[28]

AssetsNet

$ 343,646,911

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 964,381

InvestmentCompanyPortfolioTurnover

0.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$343,646,911
# of Portfolio Investments88
Portfolio Turnover Rate0%
Total Advisory Fees Paid$964,381

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Corporate Bonds & Notes	4.3
Short-Term Investments	14.8
Foreign Government	79.4

Top 10 Countries

Table Summary
Value	Value
Mexico	4.0
Spain	4.5
Panama	4.7
Norway	4.8
India	6.0
Egypt	6.7
South Africa	8.0
Brazil	8.4
Malaysia	9.2
Australia	10.8

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Malaysia Government Bonds	9.2
Brazil Notas do Tesouro Nacional	8.4
Republic of South Africa Government Bonds	8.0
India Government Bonds	6.0
Norway Government Bonds	4.8
Panama Government International Bonds	4.7
Spain Government Bonds	4.5
International Bank for Reconstruction & Development	4.3
Mexico Bonos	4.0
Queensland Treasury Corp.	4.0

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030760

Shareholder Report [Line Items]

Fund Name

Brighthouse/Wellington Large Cap Research Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Wellington Large Cap Research Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$27	0.51%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 27

Expense Ratio, Percent

0.51%

^[29]

AssetsNet

$ 2,573,848,935

Holdings Count | Holding

200

Advisory Fees Paid, Amount

$ 6,001,811

InvestmentCompanyPortfolioTurnover

47.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,573,848,935
# of Portfolio Investments200
Portfolio Turnover Rate47%
Total Advisory Fees Paid$6,001,811

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Materials	2.3
Utilities	2.7
Energy	3.7
Consumer Staples	5.7
Industrials	8.0
Communication Services	8.2
Health Care	10.1
Consumer Discretionary	10.9
Financials	11.2
Information Technology	35.9

Top Countries

Table Summary
Value	Value
Israel	0.1
Belgium	0.1
Bermuda	0.1
United Kingdom	1.0
United States	98.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	8.5
Apple, Inc.	5.4
Amazon.com, Inc.	5.1
Alphabet, Inc.	4.9
Microsoft Corp.	4.3
Broadcom, Inc.	3.5
Micron Technology, Inc.	2.8
Advanced Micro Devices, Inc.	2.0
Goldman Sachs Group, Inc.	1.8
Eli Lilly & Co.	1.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030761

Shareholder Report [Line Items]

Fund Name

Brighthouse/Wellington Large Cap Research Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Wellington Large Cap Research Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$40	0.76%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.76%

^[30]

AssetsNet

$ 2,573,848,935

Holdings Count | Holding

200

Advisory Fees Paid, Amount

$ 6,001,811

InvestmentCompanyPortfolioTurnover

47.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,573,848,935
# of Portfolio Investments200
Portfolio Turnover Rate47%
Total Advisory Fees Paid$6,001,811

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Materials	2.3
Utilities	2.7
Energy	3.7
Consumer Staples	5.7
Industrials	8.0
Communication Services	8.2
Health Care	10.1
Consumer Discretionary	10.9
Financials	11.2
Information Technology	35.9

Top Countries

Table Summary
Value	Value
Israel	0.1
Belgium	0.1
Bermuda	0.1
United Kingdom	1.0
United States	98.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	8.5
Apple, Inc.	5.4
Amazon.com, Inc.	5.1
Alphabet, Inc.	4.9
Microsoft Corp.	4.3
Broadcom, Inc.	3.5
Micron Technology, Inc.	2.8
Advanced Micro Devices, Inc.	2.0
Goldman Sachs Group, Inc.	1.8
Eli Lilly & Co.	1.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030763

Shareholder Report [Line Items]

Fund Name

Brighthouse/Wellington Large Cap Research Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Brighthouse/Wellington Large Cap Research Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$34	0.66%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.66%

^[31]

AssetsNet

$ 2,573,848,935

Holdings Count | Holding

200

Advisory Fees Paid, Amount

$ 6,001,811

InvestmentCompanyPortfolioTurnover

47.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,573,848,935
# of Portfolio Investments200
Portfolio Turnover Rate47%
Total Advisory Fees Paid$6,001,811

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Materials	2.3
Utilities	2.7
Energy	3.7
Consumer Staples	5.7
Industrials	8.0
Communication Services	8.2
Health Care	10.1
Consumer Discretionary	10.9
Financials	11.2
Information Technology	35.9

Top Countries

Table Summary
Value	Value
Israel	0.1
Belgium	0.1
Bermuda	0.1
United Kingdom	1.0
United States	98.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	8.5
Apple, Inc.	5.4
Amazon.com, Inc.	5.1
Alphabet, Inc.	4.9
Microsoft Corp.	4.3
Broadcom, Inc.	3.5
Micron Technology, Inc.	2.8
Advanced Micro Devices, Inc.	2.0
Goldman Sachs Group, Inc.	1.8
Eli Lilly & Co.	1.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030620

Shareholder Report [Line Items]

Fund Name

CBRE Global Real Estate Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the CBRE Global Real Estate Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$34	0.66%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.66%

^[32]

AssetsNet

$ 829,993,047

Holdings Count | Holding

101

Advisory Fees Paid, Amount

$ 2,568,937

InvestmentCompanyPortfolioTurnover

44.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$829,993,047
# of Portfolio Investments101
Portfolio Turnover Rate44%
Total Advisory Fees Paid$2,568,937

Holdings [Text Block]

Top 10 Industries

Table Summary
Value	Value
Hotels, Restaurants & Leisure	1.4
Hotel & Resort REITs	1.9
Office REITs	3.7
Real Estate Management & Development	7.3
Diversified REITs	8.2
Residential REITs	9.7
Health Care REITs	15.3
Industrial REITs	16.8
Retail REITs	17.1
Specialized REITs	17.3

Top 10 Countries

Table Summary
Value	Value
Canada	1.1
Sweden	1.2
Belgium	1.2
Singapore	2.6
Hong Kong	3.2
United Kingdom	3.9
France	4.3
Japan	6.8
Australia	7.0
United States	65.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Welltower, Inc.	10.0
Equinix, Inc.	7.1
Prologis, Inc.	3.8
Iron Mountain, Inc.	3.0
Ventas, Inc.	3.0
Simon Property Group, Inc.	2.9
Goodman Group	2.6
VICI Properties, Inc.	2.6
UDR, Inc.	2.4
Unibail-Rodamco-Westfield	2.3

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030621

Shareholder Report [Line Items]

Fund Name

CBRE Global Real Estate Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the CBRE Global Real Estate Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$47	0.91%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.91%

^[33]

AssetsNet

$ 829,993,047

Holdings Count | Holding

101

Advisory Fees Paid, Amount

$ 2,568,937

InvestmentCompanyPortfolioTurnover

44.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$829,993,047
# of Portfolio Investments101
Portfolio Turnover Rate44%
Total Advisory Fees Paid$2,568,937

Holdings [Text Block]

Top 10 Industries

Table Summary
Value	Value
Hotels, Restaurants & Leisure	1.4
Hotel & Resort REITs	1.9
Office REITs	3.7
Real Estate Management & Development	7.3
Diversified REITs	8.2
Residential REITs	9.7
Health Care REITs	15.3
Industrial REITs	16.8
Retail REITs	17.1
Specialized REITs	17.3

Top 10 Countries

Table Summary
Value	Value
Canada	1.1
Sweden	1.2
Belgium	1.2
Singapore	2.6
Hong Kong	3.2
United Kingdom	3.9
France	4.3
Japan	6.8
Australia	7.0
United States	65.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Welltower, Inc.	10.0
Equinix, Inc.	7.1
Prologis, Inc.	3.8
Iron Mountain, Inc.	3.0
Ventas, Inc.	3.0
Simon Property Group, Inc.	2.9
Goodman Group	2.6
VICI Properties, Inc.	2.6
UDR, Inc.	2.4
Unibail-Rodamco-Westfield	2.3

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030623

Shareholder Report [Line Items]

Fund Name

CBRE Global Real Estate Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the CBRE Global Real Estate Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$42	0.81%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 42

Expense Ratio, Percent

0.81%

^[34]

AssetsNet

$ 829,993,047

Holdings Count | Holding

101

Advisory Fees Paid, Amount

$ 2,568,937

InvestmentCompanyPortfolioTurnover

44.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$829,993,047
# of Portfolio Investments101
Portfolio Turnover Rate44%
Total Advisory Fees Paid$2,568,937

Holdings [Text Block]

Top 10 Industries

Table Summary
Value	Value
Hotels, Restaurants & Leisure	1.4
Hotel & Resort REITs	1.9
Office REITs	3.7
Real Estate Management & Development	7.3
Diversified REITs	8.2
Residential REITs	9.7
Health Care REITs	15.3
Industrial REITs	16.8
Retail REITs	17.1
Specialized REITs	17.3

Top 10 Countries

Table Summary
Value	Value
Canada	1.1
Sweden	1.2
Belgium	1.2
Singapore	2.6
Hong Kong	3.2
United Kingdom	3.9
France	4.3
Japan	6.8
Australia	7.0
United States	65.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Welltower, Inc.	10.0
Equinix, Inc.	7.1
Prologis, Inc.	3.8
Iron Mountain, Inc.	3.0
Ventas, Inc.	3.0
Simon Property Group, Inc.	2.9
Goodman Group	2.6
VICI Properties, Inc.	2.6
UDR, Inc.	2.4
Unibail-Rodamco-Westfield	2.3

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030710

Shareholder Report [Line Items]

Fund Name

Harris Oakmark International Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Harris Oakmark International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$36	0.72%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 36

Expense Ratio, Percent

0.72%

^[35]

AssetsNet

$ 1,941,221,026

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,731,872

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,941,221,026
# of Portfolio Investments76
Portfolio Turnover Rate28%
Total Advisory Fees Paid$6,731,872

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Communication Services	1.6
Materials	7.0
Health Care	7.0
Information Technology	11.5
Consumer Staples	13.1
Financials	13.9
Industrials	19.4
Consumer Discretionary	23.1

Top 10 Countries

Table Summary
Value	Value
Sweden	2.4
Denmark	2.5
China	3.7
South Korea	4.7
Japan	5.5
Netherlands	5.6
United States	5.9
United Kingdom	13.8
France	21.6
Germany	22.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
BNP Paribas SA	3.5
adidas AG	3.1
Compass Group PLC	3.0
Symrise AG	2.8
Sunbelt Rentals Holdings, Inc.	2.8
Accor SA	2.7
Reckitt Benckiser Group PLC	2.6
LVMH Moet Hennessy Louis Vuitton SE	2.6
DSV AS	2.5
Hexagon AB	2.4

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030711

Shareholder Report [Line Items]

Fund Name

Harris Oakmark International Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Harris Oakmark International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$48	0.97%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.97%

^[36]

AssetsNet

$ 1,941,221,026

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,731,872

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,941,221,026
# of Portfolio Investments76
Portfolio Turnover Rate28%
Total Advisory Fees Paid$6,731,872

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Communication Services	1.6
Materials	7.0
Health Care	7.0
Information Technology	11.5
Consumer Staples	13.1
Financials	13.9
Industrials	19.4
Consumer Discretionary	23.1

Top 10 Countries

Table Summary
Value	Value
Sweden	2.4
Denmark	2.5
China	3.7
South Korea	4.7
Japan	5.5
Netherlands	5.6
United States	5.9
United Kingdom	13.8
France	21.6
Germany	22.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
BNP Paribas SA	3.5
adidas AG	3.1
Compass Group PLC	3.0
Symrise AG	2.8
Sunbelt Rentals Holdings, Inc.	2.8
Accor SA	2.7
Reckitt Benckiser Group PLC	2.6
LVMH Moet Hennessy Louis Vuitton SE	2.6
DSV AS	2.5
Hexagon AB	2.4

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030713

Shareholder Report [Line Items]

Fund Name

Harris Oakmark International Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Harris Oakmark International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$43	0.87%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.87%

^[37]

AssetsNet

$ 1,941,221,026

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 6,731,872

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,941,221,026
# of Portfolio Investments76
Portfolio Turnover Rate28%
Total Advisory Fees Paid$6,731,872

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Communication Services	1.6
Materials	7.0
Health Care	7.0
Information Technology	11.5
Consumer Staples	13.1
Financials	13.9
Industrials	19.4
Consumer Discretionary	23.1

Top 10 Countries

Table Summary
Value	Value
Sweden	2.4
Denmark	2.5
China	3.7
South Korea	4.7
Japan	5.5
Netherlands	5.6
United States	5.9
United Kingdom	13.8
France	21.6
Germany	22.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
BNP Paribas SA	3.5
adidas AG	3.1
Compass Group PLC	3.0
Symrise AG	2.8
Sunbelt Rentals Holdings, Inc.	2.8
Accor SA	2.7
Reckitt Benckiser Group PLC	2.6
LVMH Moet Hennessy Louis Vuitton SE	2.6
DSV AS	2.5
Hexagon AB	2.4

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000112664

Shareholder Report [Line Items]

Fund Name

Invesco Balanced-Risk Allocation Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Balanced-Risk Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$48	0.92%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 48

Expense Ratio, Percent

0.92%

^[38]

AssetsNet

$ 745,100,686

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,283,306

InvestmentCompanyPortfolioTurnover

26.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$745,100,686
# of Portfolio Investments53
Portfolio Turnover Rate26%
Total Advisory Fees Paid$2,283,306

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
U.S. Large Cap Equities	4.5
Emerging Market Equities	6.2
U.S. Small Cap Equities	6.8
International Developed Market Equities	20.2
Commodities	33.3
Global Developed Bonds	72.5

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030670

Shareholder Report [Line Items]

Fund Name

Invesco Comstock Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Comstock Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$29	0.56%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.56%

^[39]

AssetsNet

$ 1,956,902,686

Holdings Count | Holding

105

Advisory Fees Paid, Amount

$ 5,066,228

InvestmentCompanyPortfolioTurnover

19.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,956,902,686
# of Portfolio Investments105
Portfolio Turnover Rate19%
Total Advisory Fees Paid$5,066,228

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Materials	2.7
Utilities	4.2
Consumer Discretionary	5.4
Consumer Staples	6.7
Communication Services	6.8
Energy	8.6
Industrials	12.7
Information Technology	12.9
Health Care	18.1
Financials	18.8

Top Countries

Table Summary
Value	Value
Denmark	0.8
Belgium	1.1
Netherlands	2.2
Canada	2.4
United Kingdom	2.4
United States	89.4

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Alphabet, Inc.	3.9
Bank of America Corp.	3.4
Cisco Systems, Inc.	3.1
Wells Fargo & Co.	2.6
CVS Health Corp.	2.5
Merck & Co., Inc.	2.3
Microsoft Corp.	2.3
State Street Corp.	2.0
Chevron Corp.	1.9
Caterpillar, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030671

Shareholder Report [Line Items]

Fund Name

Invesco Comstock Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Comstock Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$42	0.81%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 42

Expense Ratio, Percent

0.81%

^[40]

AssetsNet

$ 1,956,902,686

Holdings Count | Holding

105

Advisory Fees Paid, Amount

$ 5,066,228

InvestmentCompanyPortfolioTurnover

19.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,956,902,686
# of Portfolio Investments105
Portfolio Turnover Rate19%
Total Advisory Fees Paid$5,066,228

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Materials	2.7
Utilities	4.2
Consumer Discretionary	5.4
Consumer Staples	6.7
Communication Services	6.8
Energy	8.6
Industrials	12.7
Information Technology	12.9
Health Care	18.1
Financials	18.8

Top Countries

Table Summary
Value	Value
Denmark	0.8
Belgium	1.1
Netherlands	2.2
Canada	2.4
United Kingdom	2.4
United States	89.4

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Alphabet, Inc.	3.9
Bank of America Corp.	3.4
Cisco Systems, Inc.	3.1
Wells Fargo & Co.	2.6
CVS Health Corp.	2.5
Merck & Co., Inc.	2.3
Microsoft Corp.	2.3
State Street Corp.	2.0
Chevron Corp.	1.9
Caterpillar, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063051

Shareholder Report [Line Items]

Fund Name

Invesco Global Equity Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Global Equity Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$30	0.57%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 30

Expense Ratio, Percent

0.57%

^[41]

AssetsNet

$ 1,131,898,106

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,854,868

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,131,898,106
# of Portfolio Investments78
Portfolio Turnover Rate8%
Total Advisory Fees Paid$2,854,868

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Materials	1.0
Real Estate	2.2
Industrials	2.9
Consumer Discretionary	8.3
Financials	9.9
Health Care	10.9
Communication Services	16.0
Information Technology	48.6

Top 10 Countries

Table Summary
Value	Value
South Korea	1.7
Germany	1.7
Japan	1.9
Canada	1.9
Switzerland	2.1
France	2.4
Netherlands	3.1
India	3.3
Taiwan	7.5
United States	70.5

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Alphabet, Inc.	9.3
Lam Research Corp.	8.5
Taiwan Semiconductor Manufacturing Co. Ltd.	7.4
NVIDIA Corp.	5.6
Marvell Technology, Inc.	4.4
Meta Platforms, Inc.	4.2
Broadcom, Inc.	3.9
Analog Devices, Inc.	3.6
Eli Lilly & Co.	3.4
Visa, Inc.	3.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063048

Shareholder Report [Line Items]

Fund Name

Invesco Global Equity Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Global Equity Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$43	0.82%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.82%

^[42]

AssetsNet

$ 1,131,898,106

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,854,868

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,131,898,106
# of Portfolio Investments78
Portfolio Turnover Rate8%
Total Advisory Fees Paid$2,854,868

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Materials	1.0
Real Estate	2.2
Industrials	2.9
Consumer Discretionary	8.3
Financials	9.9
Health Care	10.9
Communication Services	16.0
Information Technology	48.6

Top 10 Countries

Table Summary
Value	Value
South Korea	1.7
Germany	1.7
Japan	1.9
Canada	1.9
Switzerland	2.1
France	2.4
Netherlands	3.1
India	3.3
Taiwan	7.5
United States	70.5

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Alphabet, Inc.	9.3
Lam Research Corp.	8.5
Taiwan Semiconductor Manufacturing Co. Ltd.	7.4
NVIDIA Corp.	5.6
Marvell Technology, Inc.	4.4
Meta Platforms, Inc.	4.2
Broadcom, Inc.	3.9
Analog Devices, Inc.	3.6
Eli Lilly & Co.	3.4
Visa, Inc.	3.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000063050

Shareholder Report [Line Items]

Fund Name

Invesco Global Equity Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Global Equity Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$37	0.72%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 37

Expense Ratio, Percent

0.72%

^[43]

AssetsNet

$ 1,131,898,106

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,854,868

InvestmentCompanyPortfolioTurnover

8.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,131,898,106
# of Portfolio Investments78
Portfolio Turnover Rate8%
Total Advisory Fees Paid$2,854,868

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Materials	1.0
Real Estate	2.2
Industrials	2.9
Consumer Discretionary	8.3
Financials	9.9
Health Care	10.9
Communication Services	16.0
Information Technology	48.6

Top 10 Countries

Table Summary
Value	Value
South Korea	1.7
Germany	1.7
Japan	1.9
Canada	1.9
Switzerland	2.1
France	2.4
Netherlands	3.1
India	3.3
Taiwan	7.5
United States	70.5

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Alphabet, Inc.	9.3
Lam Research Corp.	8.5
Taiwan Semiconductor Manufacturing Co. Ltd.	7.4
NVIDIA Corp.	5.6
Marvell Technology, Inc.	4.4
Meta Platforms, Inc.	4.2
Broadcom, Inc.	3.9
Analog Devices, Inc.	3.6
Eli Lilly & Co.	3.4
Visa, Inc.	3.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030546

Shareholder Report [Line Items]

Fund Name

Invesco Small Cap Growth Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Small Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$41	0.73%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.73%

^[44]

AssetsNet

$ 860,196,877

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 2,862,864

InvestmentCompanyPortfolioTurnover

54.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$860,196,877
# of Portfolio Investments118
Portfolio Turnover Rate54%
Total Advisory Fees Paid$2,862,864

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Communication Services	0.5
Consumer Staples	1.3
Utilities	1.4
Materials	3.2
Energy	4.7
Financials	5.7
Consumer Discretionary	6.2
Health Care	23.0
Industrials	24.4
Information Technology	27.9

Top Countries

Table Summary
Value	Value
Cayman Islands	0.3
United Kingdom	0.8
Denmark	0.8
Brazil	0.9
Canada	1.1
Taiwan	1.6
Israel	1.9
Japan	2.7
United States	88.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
MKS, Inc.	3.1
Allegro MicroSystems, Inc.	2.7
BrightSpring Health Services, Inc.	2.7
ESCO Technologies, Inc.	2.2
Sterling Infrastructure, Inc.	2.1
Lattice Semiconductor Corp.	2.1
Onto Innovation, Inc.	2.0
Axsome Therapeutics, Inc.	2.0
Sanmina Corp.	2.0
TTM Technologies, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030547

Shareholder Report [Line Items]

Fund Name

Invesco Small Cap Growth Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Small Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$56	0.98%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 56

Expense Ratio, Percent

0.98%

^[45]

AssetsNet

$ 860,196,877

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 2,862,864

InvestmentCompanyPortfolioTurnover

54.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$860,196,877
# of Portfolio Investments118
Portfolio Turnover Rate54%
Total Advisory Fees Paid$2,862,864

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Communication Services	0.5
Consumer Staples	1.3
Utilities	1.4
Materials	3.2
Energy	4.7
Financials	5.7
Consumer Discretionary	6.2
Health Care	23.0
Industrials	24.4
Information Technology	27.9

Top Countries

Table Summary
Value	Value
Cayman Islands	0.3
United Kingdom	0.8
Denmark	0.8
Brazil	0.9
Canada	1.1
Taiwan	1.6
Israel	1.9
Japan	2.7
United States	88.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
MKS, Inc.	3.1
Allegro MicroSystems, Inc.	2.7
BrightSpring Health Services, Inc.	2.7
ESCO Technologies, Inc.	2.2
Sterling Infrastructure, Inc.	2.1
Lattice Semiconductor Corp.	2.1
Onto Innovation, Inc.	2.0
Axsome Therapeutics, Inc.	2.0
Sanmina Corp.	2.0
TTM Technologies, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030549

Shareholder Report [Line Items]

Fund Name

Invesco Small Cap Growth Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Invesco Small Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$50	0.88%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

0.88%

^[46]

AssetsNet

$ 860,196,877

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 2,862,864

InvestmentCompanyPortfolioTurnover

54.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$860,196,877
# of Portfolio Investments118
Portfolio Turnover Rate54%
Total Advisory Fees Paid$2,862,864

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Communication Services	0.5
Consumer Staples	1.3
Utilities	1.4
Materials	3.2
Energy	4.7
Financials	5.7
Consumer Discretionary	6.2
Health Care	23.0
Industrials	24.4
Information Technology	27.9

Top Countries

Table Summary
Value	Value
Cayman Islands	0.3
United Kingdom	0.8
Denmark	0.8
Brazil	0.9
Canada	1.1
Taiwan	1.6
Israel	1.9
Japan	2.7
United States	88.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
MKS, Inc.	3.1
Allegro MicroSystems, Inc.	2.7
BrightSpring Health Services, Inc.	2.7
ESCO Technologies, Inc.	2.2
Sterling Infrastructure, Inc.	2.1
Lattice Semiconductor Corp.	2.1
Onto Innovation, Inc.	2.0
Axsome Therapeutics, Inc.	2.0
Sanmina Corp.	2.0
TTM Technologies, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030600

Shareholder Report [Line Items]

Fund Name

JPMorgan Core Bond Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the JPMorgan Core Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$22	0.45%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 22

Expense Ratio, Percent

0.45%

^[47]

AssetsNet

$ 1,180,655,393

Holdings Count | Holding

986

Advisory Fees Paid, Amount

$ 2,427,588

InvestmentCompanyPortfolioTurnover

26.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,180,655,393
# of Portfolio Investments986
Portfolio Turnover Rate26%
Total Advisory Fees Paid$2,427,588

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Municipals	0.1
Foreign Government	0.7
Non-Agency Mortgage-Backed Securities	2.8
Short-Term Investments	2.9
Asset-Backed Securities	10.9
Corporate Bonds & Notes	24.5
Agency Sponsored Mortgage-Backed Securities	28.1
U.S. Treasury & Government Agencies	30.0

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	14.3
Federal National Mortgage Association	13.1
U.S. Treasury Bonds	12.0
Government National Mortgage Association	3.8
U.S. Treasury STRIPS Coupon	3.4
Federal National Mortgage Association-ACES	3.0
Federal Home Loan Mortgage Corp.	2.9
Federal Home Loan Mortgage Corp. Seasoned Credit Risk Transfer Trust	1.4
Federal Home Loan Mortgage Corp. Multifamily Structured Pass-Through Certificates	1.1
FMC GMSR Issuer Trust	1.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030601

Shareholder Report [Line Items]

Fund Name

JPMorgan Core Bond Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the JPMorgan Core Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$35	0.70%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.70%

^[48]

AssetsNet

$ 1,180,655,393

Holdings Count | Holding

986

Advisory Fees Paid, Amount

$ 2,427,588

InvestmentCompanyPortfolioTurnover

26.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,180,655,393
# of Portfolio Investments986
Portfolio Turnover Rate26%
Total Advisory Fees Paid$2,427,588

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Municipals	0.1
Foreign Government	0.7
Non-Agency Mortgage-Backed Securities	2.8
Short-Term Investments	2.9
Asset-Backed Securities	10.9
Corporate Bonds & Notes	24.5
Agency Sponsored Mortgage-Backed Securities	28.1
U.S. Treasury & Government Agencies	30.0

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	14.3
Federal National Mortgage Association	13.1
U.S. Treasury Bonds	12.0
Government National Mortgage Association	3.8
U.S. Treasury STRIPS Coupon	3.4
Federal National Mortgage Association-ACES	3.0
Federal Home Loan Mortgage Corp.	2.9
Federal Home Loan Mortgage Corp. Seasoned Credit Risk Transfer Trust	1.4
Federal Home Loan Mortgage Corp. Multifamily Structured Pass-Through Certificates	1.1
FMC GMSR Issuer Trust	1.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000112668

Shareholder Report [Line Items]

Fund Name

JPMorgan Global Active Allocation Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the JPMorgan Global Active Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$50	0.98%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

0.98%

^[49]

AssetsNet

$ 936,285,905

Holdings Count | Holding

1,443

Advisory Fees Paid, Amount

$ 4,165,359

InvestmentCompanyPortfolioTurnover

40.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$936,285,905
# of Portfolio Investments1,443
Portfolio Turnover Rate40%
Total Advisory Fees Paid$4,165,359

Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	3.9
Federal National Mortgage Association	2.1
U.S. Treasury Bonds	2.1
Government National Mortgage Association	0.9
Goldman Sachs Group, Inc.	0.7
Bank of America Corp.	0.7
Morgan Stanley	0.6
Wells Fargo & Co.	0.5
Citigroup, Inc.	0.5
HSBC Holdings PLC	0.4

Top 10 Countries

Table Summary
Value	Value
Spain	0.9
Netherlands	1.2
China	1.3
Germany	1.6
France	2.1
South Korea	2.2
Taiwan	2.4
United Kingdom	2.5
Japan	3.7
United States	55.1

Asset Allocation

Table Summary
Value	Value
Municipals	0.0^{Footnote Reference*}
Foreign Government	0.0^{Footnote Reference*}
Preferred Stocks	0.2
Non-Agency Mortgage-Backed Securities	0.6
Asset-Backed Securities	1.6
Agency Sponsored Mortgage-Backed Securities	4.4
U.S. Treasury & Government Agencies	6.2
Short-Term Investments	17.2
Corporate Bonds & Notes	18.7
Common Stocks	49.5

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	1.8
Taiwan Semiconductor Manufacturing Co. Ltd.	1.7
Alphabet, Inc.	1.6
Apple, Inc.	1.1
Amazon.com, Inc.	1.1
SK Hynix, Inc.	1.1
Samsung Electronics Co. Ltd.	1.0
ASML Holding NV	0.9
Microsoft Corp.	0.7
Broadcom, Inc.	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030725

Shareholder Report [Line Items]

Fund Name

JPMorgan Small Cap Value Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the JPMorgan Small Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$44	0.79%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 44

Expense Ratio, Percent

0.79%

^[50]

AssetsNet

$ 326,145,796

Holdings Count | Holding

503

Advisory Fees Paid, Amount

$ 1,102,168

InvestmentCompanyPortfolioTurnover

47.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$326,145,796
# of Portfolio Investments503
Portfolio Turnover Rate47%
Total Advisory Fees Paid$1,102,168

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Communication Services	2.9
Materials	3.8
Utilities	5.0
Energy	6.3
Information Technology	8.6
Industrials	9.3
Real Estate	9.6
Health Care	9.8
Consumer Discretionary	10.0
Financials	28.0

Top 10 Countries

Table Summary
Value	Value
South Korea	0.1
Panama	0.1
Norway	0.3
United Kingdom	0.4
Puerto Rico	0.4
Monaco	0.9
Switzerland	0.9
Canada	0.9
Bermuda	1.1
United States	90.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
New Jersey Resources Corp.	1.2
Southwest Gas Holdings, Inc.	0.8
Banc of California, Inc.	0.7
Essential Properties Realty Trust, Inc.	0.7
Garrett Motion, Inc.	0.7
Old National Bancorp	0.7
Bank of NT Butterfield & Son Ltd.	0.7
NMI Holdings, Inc.	0.7
Encore Capital Group, Inc.	0.6
Walker & Dunlop, Inc.	0.6

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030726

Shareholder Report [Line Items]

Fund Name

JPMorgan Small Cap Value Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the JPMorgan Small Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$57	1.04%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 57

Expense Ratio, Percent

1.04%

^[51]

AssetsNet

$ 326,145,796

Holdings Count | Holding

503

Advisory Fees Paid, Amount

$ 1,102,168

InvestmentCompanyPortfolioTurnover

47.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$326,145,796
# of Portfolio Investments503
Portfolio Turnover Rate47%
Total Advisory Fees Paid$1,102,168

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Communication Services	2.9
Materials	3.8
Utilities	5.0
Energy	6.3
Information Technology	8.6
Industrials	9.3
Real Estate	9.6
Health Care	9.8
Consumer Discretionary	10.0
Financials	28.0

Top 10 Countries

Table Summary
Value	Value
South Korea	0.1
Panama	0.1
Norway	0.3
United Kingdom	0.4
Puerto Rico	0.4
Monaco	0.9
Switzerland	0.9
Canada	0.9
Bermuda	1.1
United States	90.7

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
New Jersey Resources Corp.	1.2
Southwest Gas Holdings, Inc.	0.8
Banc of California, Inc.	0.7
Essential Properties Realty Trust, Inc.	0.7
Garrett Motion, Inc.	0.7
Old National Bancorp	0.7
Bank of NT Butterfield & Son Ltd.	0.7
NMI Holdings, Inc.	0.7
Encore Capital Group, Inc.	0.6
Walker & Dunlop, Inc.	0.6

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030755

Shareholder Report [Line Items]

Fund Name

Loomis Sayles Global Allocation Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Loomis Sayles Global Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$41	0.80%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.80%

^[52]

AssetsNet

$ 364,330,932

Holdings Count | Holding

458

Advisory Fees Paid, Amount

$ 1,239,364

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$364,330,932
# of Portfolio Investments458
Portfolio Turnover Rate25%
Total Advisory Fees Paid$1,239,364

Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	2.4
Australia Government Bonds	1.0
EchoStar Corp.	1.0
Glencore Funding LLC	0.8
New Zealand Government Bonds	0.8
Boeing Co.	0.7
U.K. Gilts	0.7
Teva Pharmaceutical Finance Netherlands III BV	0.6
Mexico Bonos	0.6
CSC Holdings LLC	0.4

Top 10 Countries

Table Summary
Value	Value
Israel	1.0
Mexico	1.2
Sweden	1.6
Canada	1.6
Australia	2.0
Japan	2.3
United Kingdom	2.3
Netherlands	3.5
Taiwan	3.6
United States	69.6

Asset Allocation

Table Summary
Value	Value
Convertible Bonds	0.0^{Footnote Reference*}
Municipals	0.1
Floating Rate Loans	1.5
Short-Term Investments	2.2
U.S. Treasury & Government Agencies	2.9
Foreign Government	9.1
Corporate Bonds & Notes	16.6
Common Stocks	67.6

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	5.7
Booking Holdings, Inc.	5.1
Taiwan Semiconductor Manufacturing Co. Ltd.	3.6
ASML Holding NV	3.4
Alphabet, Inc.	3.2
Amazon.com, Inc.	3.2
Mastercard, Inc.	3.1
S&P Global, Inc.	2.9
Broadcom, Inc.	2.8
Trane Technologies PLC	2.3

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030756

Shareholder Report [Line Items]

Fund Name

Loomis Sayles Global Allocation Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Loomis Sayles Global Allocation Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$54	1.05%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 54

Expense Ratio, Percent

1.05%

^[53]

AssetsNet

$ 364,330,932

Holdings Count | Holding

458

Advisory Fees Paid, Amount

$ 1,239,364

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$364,330,932
# of Portfolio Investments458
Portfolio Turnover Rate25%
Total Advisory Fees Paid$1,239,364

Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	2.4
Australia Government Bonds	1.0
EchoStar Corp.	1.0
Glencore Funding LLC	0.8
New Zealand Government Bonds	0.8
Boeing Co.	0.7
U.K. Gilts	0.7
Teva Pharmaceutical Finance Netherlands III BV	0.6
Mexico Bonos	0.6
CSC Holdings LLC	0.4

Top 10 Countries

Table Summary
Value	Value
Israel	1.0
Mexico	1.2
Sweden	1.6
Canada	1.6
Australia	2.0
Japan	2.3
United Kingdom	2.3
Netherlands	3.5
Taiwan	3.6
United States	69.6

Asset Allocation

Table Summary
Value	Value
Convertible Bonds	0.0^{Footnote Reference*}
Municipals	0.1
Floating Rate Loans	1.5
Short-Term Investments	2.2
U.S. Treasury & Government Agencies	2.9
Foreign Government	9.1
Corporate Bonds & Notes	16.6
Common Stocks	67.6

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	5.7
Booking Holdings, Inc.	5.1
Taiwan Semiconductor Manufacturing Co. Ltd.	3.6
ASML Holding NV	3.4
Alphabet, Inc.	3.2
Amazon.com, Inc.	3.2
Mastercard, Inc.	3.1
S&P Global, Inc.	2.9
Broadcom, Inc.	2.8
Trane Technologies PLC	2.3

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030551

Shareholder Report [Line Items]

Fund Name

Loomis Sayles Growth Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Loomis Sayles Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$27	0.55%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 27

Expense Ratio, Percent

0.55%

^[54]

AssetsNet

$ 2,895,663,497

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,801,593

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,895,663,497
# of Portfolio Investments53
Portfolio Turnover Rate4%
Total Advisory Fees Paid$7,801,593

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	3.7
Financials	7.4
Industrials	7.5
Health Care	11.5
Consumer Discretionary	17.4
Communication Services	23.4
Information Technology	27.1

Top Countries

Table Summary
Value	Value
China	0.1
Denmark	1.5
Canada	2.4
United States	95.0

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	12.6
Alphabet, Inc.	10.6
Tesla, Inc.	8.4
Meta Platforms, Inc.	6.4
Amazon.com, Inc.	6.0
Visa, Inc.	4.9
Boeing Co.	4.8
Microsoft Corp.	4.5
Netflix, Inc.	4.2
Monster Beverage Corp.	3.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030552

Shareholder Report [Line Items]

Fund Name

Loomis Sayles Growth Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Loomis Sayles Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$39	0.80%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 39

Expense Ratio, Percent

0.80%

^[55]

AssetsNet

$ 2,895,663,497

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,801,593

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,895,663,497
# of Portfolio Investments53
Portfolio Turnover Rate4%
Total Advisory Fees Paid$7,801,593

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	3.7
Financials	7.4
Industrials	7.5
Health Care	11.5
Consumer Discretionary	17.4
Communication Services	23.4
Information Technology	27.1

Top Countries

Table Summary
Value	Value
China	0.1
Denmark	1.5
Canada	2.4
United States	95.0

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	12.6
Alphabet, Inc.	10.6
Tesla, Inc.	8.4
Meta Platforms, Inc.	6.4
Amazon.com, Inc.	6.0
Visa, Inc.	4.9
Boeing Co.	4.8
Microsoft Corp.	4.5
Netflix, Inc.	4.2
Monster Beverage Corp.	3.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030554

Shareholder Report [Line Items]

Fund Name

Loomis Sayles Growth Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Loomis Sayles Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$34	0.70%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.70%

^[56]

AssetsNet

$ 2,895,663,497

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 7,801,593

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,895,663,497
# of Portfolio Investments53
Portfolio Turnover Rate4%
Total Advisory Fees Paid$7,801,593

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	3.7
Financials	7.4
Industrials	7.5
Health Care	11.5
Consumer Discretionary	17.4
Communication Services	23.4
Information Technology	27.1

Top Countries

Table Summary
Value	Value
China	0.1
Denmark	1.5
Canada	2.4
United States	95.0

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	12.6
Alphabet, Inc.	10.6
Tesla, Inc.	8.4
Meta Platforms, Inc.	6.4
Amazon.com, Inc.	6.0
Visa, Inc.	4.9
Boeing Co.	4.8
Microsoft Corp.	4.5
Netflix, Inc.	4.2
Monster Beverage Corp.	3.7

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000119619

Shareholder Report [Line Items]

Fund Name

MetLife Multi-Index Targeted Risk Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the MetLife Multi-Index Targeted Risk Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$21	0.41%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 21

Expense Ratio, Percent

0.41%

^[57]

AssetsNet

$ 5,421,300,219

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,998,877

InvestmentCompanyPortfolioTurnover

9.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$5,421,300,219
# of Portfolio Investments33
Portfolio Turnover Rate9%
Total Advisory Fees Paid$3,998,877

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
U.S. Small Cap Equities	5.2
U.S. Mid Cap Equities	9.3
International Developed Market Equities	21.7
U.S. Large Cap Equities	32.2
Investment Grade Fixed Income	39.8

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030615

Shareholder Report [Line Items]

Fund Name

MFS<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Research International Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the MFS^® Research International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$29	0.56%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.56%

^[58]

AssetsNet

$ 1,426,723,610

Holdings Count | Holding

134

Advisory Fees Paid, Amount

$ 3,620,192

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,426,723,610
# of Portfolio Investments134
Portfolio Turnover Rate13%
Total Advisory Fees Paid$3,620,192

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	2.6
Communication Services	3.5
Energy	4.1
Consumer Staples	5.0
Consumer Discretionary	7.3
Materials	8.0
Health Care	10.6
Information Technology	13.5
Industrials	17.1
Financials	26.9

Top 10 Countries

Table Summary
Value	Value
Taiwan	2.3
Italy	3.1
Switzerland	3.1
Australia	3.9
Germany	5.3
Netherlands	5.8
France	8.3
United Kingdom	13.1
United States	14.3
Japan	23.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Mizuho Financial Group, Inc.	3.0
Schneider Electric SE	2.8
Tokyo Electron Ltd.	2.8
ASML Holding NV	2.7
Taiwan Semiconductor Manufacturing Co. Ltd.	2.2
Novartis AG	2.2
Hitachi Ltd.	2.1
TotalEnergies SE	1.8
Linde PLC	1.8
AstraZeneca PLC	1.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030616

Shareholder Report [Line Items]

Fund Name

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the MFS^® Research International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$42	0.81%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 42

Expense Ratio, Percent

0.81%

^[59]

AssetsNet

$ 1,426,723,610

Holdings Count | Holding

134

Advisory Fees Paid, Amount

$ 3,620,192

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,426,723,610
# of Portfolio Investments134
Portfolio Turnover Rate13%
Total Advisory Fees Paid$3,620,192

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	2.6
Communication Services	3.5
Energy	4.1
Consumer Staples	5.0
Consumer Discretionary	7.3
Materials	8.0
Health Care	10.6
Information Technology	13.5
Industrials	17.1
Financials	26.9

Top 10 Countries

Table Summary
Value	Value
Taiwan	2.3
Italy	3.1
Switzerland	3.1
Australia	3.9
Germany	5.3
Netherlands	5.8
France	8.3
United Kingdom	13.1
United States	14.3
Japan	23.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Mizuho Financial Group, Inc.	3.0
Schneider Electric SE	2.8
Tokyo Electron Ltd.	2.8
ASML Holding NV	2.7
Taiwan Semiconductor Manufacturing Co. Ltd.	2.2
Novartis AG	2.2
Hitachi Ltd.	2.1
TotalEnergies SE	1.8
Linde PLC	1.8
AstraZeneca PLC	1.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030618

Shareholder Report [Line Items]

Fund Name

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the MFS^® Research International Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$37	0.71%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 37

Expense Ratio, Percent

0.71%

^[60]

AssetsNet

$ 1,426,723,610

Holdings Count | Holding

134

Advisory Fees Paid, Amount

$ 3,620,192

InvestmentCompanyPortfolioTurnover

13.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,426,723,610
# of Portfolio Investments134
Portfolio Turnover Rate13%
Total Advisory Fees Paid$3,620,192

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	2.6
Communication Services	3.5
Energy	4.1
Consumer Staples	5.0
Consumer Discretionary	7.3
Materials	8.0
Health Care	10.6
Information Technology	13.5
Industrials	17.1
Financials	26.9

Top 10 Countries

Table Summary
Value	Value
Taiwan	2.3
Italy	3.1
Switzerland	3.1
Australia	3.9
Germany	5.3
Netherlands	5.8
France	8.3
United Kingdom	13.1
United States	14.3
Japan	23.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Mizuho Financial Group, Inc.	3.0
Schneider Electric SE	2.8
Tokyo Electron Ltd.	2.8
ASML Holding NV	2.7
Taiwan Semiconductor Manufacturing Co. Ltd.	2.2
Novartis AG	2.2
Hitachi Ltd.	2.1
TotalEnergies SE	1.8
Linde PLC	1.8
AstraZeneca PLC	1.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030581

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Discovery Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Morgan Stanley Discovery Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$33	0.66%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 33

Expense Ratio, Percent

0.66%

^[61]

AssetsNet

$ 1,251,005,792

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,740,355

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,251,005,792
# of Portfolio Investments88
Portfolio Turnover Rate35%
Total Advisory Fees Paid$3,740,355

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	2.9
Consumer Discretionary	3.1
Real Estate	3.5
Communication Services	4.3
Industrials	10.8
Financials	11.0
Health Care	21.6
Information Technology	39.5

Top Countries

Table Summary
Value	Value
Israel	1.4
United States	95.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Cloudflare, Inc.	13.6
Royalty Pharma PLC	8.5
Affirm Holdings, Inc.	7.2
Aurora Innovation, Inc.	6.8
IonQ, Inc.	5.9
Roivant Sciences Ltd.	5.4
Databricks, Inc.	5.0
QXO, Inc.	4.5
ROBLOX Corp.	4.0
Opendoor Technologies, Inc.	3.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030582

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Discovery Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Morgan Stanley Discovery Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$46	0.91%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 46

Expense Ratio, Percent

0.91%

^[62]

AssetsNet

$ 1,251,005,792

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,740,355

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,251,005,792
# of Portfolio Investments88
Portfolio Turnover Rate35%
Total Advisory Fees Paid$3,740,355

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	2.9
Consumer Discretionary	3.1
Real Estate	3.5
Communication Services	4.3
Industrials	10.8
Financials	11.0
Health Care	21.6
Information Technology	39.5

Top Countries

Table Summary
Value	Value
Israel	1.4
United States	95.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Cloudflare, Inc.	13.6
Royalty Pharma PLC	8.5
Affirm Holdings, Inc.	7.2
Aurora Innovation, Inc.	6.8
IonQ, Inc.	5.9
Roivant Sciences Ltd.	5.4
Databricks, Inc.	5.0
QXO, Inc.	4.5
ROBLOX Corp.	4.0
Opendoor Technologies, Inc.	3.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030584

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Discovery Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Morgan Stanley Discovery Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$41	0.81%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.81%

^[63]

AssetsNet

$ 1,251,005,792

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 3,740,355

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,251,005,792
# of Portfolio Investments88
Portfolio Turnover Rate35%
Total Advisory Fees Paid$3,740,355

Holdings [Text Block]

Top Sectors

Table Summary
Value	Value
Consumer Staples	2.9
Consumer Discretionary	3.1
Real Estate	3.5
Communication Services	4.3
Industrials	10.8
Financials	11.0
Health Care	21.6
Information Technology	39.5

Top Countries

Table Summary
Value	Value
Israel	1.4
United States	95.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Cloudflare, Inc.	13.6
Royalty Pharma PLC	8.5
Affirm Holdings, Inc.	7.2
Aurora Innovation, Inc.	6.8
IonQ, Inc.	5.9
Roivant Sciences Ltd.	5.4
Databricks, Inc.	5.0
QXO, Inc.	4.5
ROBLOX Corp.	4.0
Opendoor Technologies, Inc.	3.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100071

Shareholder Report [Line Items]

Fund Name

PanAgora Global Diversified Risk Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PanAgora Global Diversified Risk Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$47	0.92%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.92%

^[64]

AssetsNet

$ 1,241,286,848

Holdings Count | Holding

370

Advisory Fees Paid, Amount

$ 3,970,152

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,241,286,848
# of Portfolio Investments370
Portfolio Turnover Rate25%
Total Advisory Fees Paid$3,970,152

Holdings [Text Block]

Top Fixed Income Issuers

Table Summary
U.S. Treasury Inflation-Indexed Notes	11.2
U.S. Treasury Inflation-Indexed Bonds	1.6

Regional Exposure

Table Summary
Value	Value
Japan Equity	3.3
European Equity	9.3
Asia Fixed Income	11.8
European Fixed Income	14.1
Americas Equity	34.0
Americas Fixed Income	58.2

Asset Allocation

Table Summary
Value	Value
Global Developed Inflation-Linked	3.9
International Developed Equities	6.3
U.S. Small Cap Equities	12.5
Emerging Market Equities	13.3
U.S. Large Cap Equities	13.7
Commodities	41.8
Global Developed Bonds	80.2

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Ameren Corp.	0.3
Tokyo Electron Ltd.	0.3
Amcor PLC	0.2
Duke Energy Corp.	0.2
Corteva, Inc.	0.2
Packaging Corp. of America	0.2
Next PLC	0.2
Advantest Corp.	0.2
ASML Holding NV	0.2
Constellation Energy Corp.	0.2

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030630

Shareholder Report [Line Items]

Fund Name

PIMCO Inflation Protected Bond Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Inflation Protected Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$64	1.28%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 64

Expense Ratio, Percent

1.28%

^[65]

AssetsNet

$ 1,388,544,669

Holdings Count | Holding

657

Advisory Fees Paid, Amount

$ 3,390,151

InvestmentCompanyPortfolioTurnover

90.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,388,544,669
# of Portfolio Investments657
Portfolio Turnover Rate90%
Total Advisory Fees Paid$3,390,151

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Convertible Preferred Stocks	0.1
Corporate Bonds & Notes	1.4
Non-Agency Mortgage-Backed Securities	1.5
Asset-Backed Securities	6.4
Foreign Government	9.2
Agency Sponsored Mortgage-Backed Securities	18.4
Short-Term Investments	59.5
U.S. Treasury & Government Agencies	95.2

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Inflation-Indexed Notes	65.0
U.S. Treasury Inflation-Indexed Bonds	30.1
Uniform Mortgage-Backed Security, TBA	10.9
Italy Buoni Poliennali Del Tesoro	2.5
Japan Government CPI-Linked Bonds	2.4
Government National Mortgage Association	2.2
U.K. Gilts	2.1
Government National Mortgage Association REMICS	2.1
Federal Home Loan Mortgage Corp. REMICS	1.2
French Republic Government Bonds OAT	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030631

Shareholder Report [Line Items]

Fund Name

PIMCO Inflation Protected Bond Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Inflation Protected Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$76	1.53%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 76

Expense Ratio, Percent

1.53%

^[66]

AssetsNet

$ 1,388,544,669

Holdings Count | Holding

657

Advisory Fees Paid, Amount

$ 3,390,151

InvestmentCompanyPortfolioTurnover

90.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,388,544,669
# of Portfolio Investments657
Portfolio Turnover Rate90%
Total Advisory Fees Paid$3,390,151

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Convertible Preferred Stocks	0.1
Corporate Bonds & Notes	1.4
Non-Agency Mortgage-Backed Securities	1.5
Asset-Backed Securities	6.4
Foreign Government	9.2
Agency Sponsored Mortgage-Backed Securities	18.4
Short-Term Investments	59.5
U.S. Treasury & Government Agencies	95.2

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Inflation-Indexed Notes	65.0
U.S. Treasury Inflation-Indexed Bonds	30.1
Uniform Mortgage-Backed Security, TBA	10.9
Italy Buoni Poliennali Del Tesoro	2.5
Japan Government CPI-Linked Bonds	2.4
Government National Mortgage Association	2.2
U.K. Gilts	2.1
Government National Mortgage Association REMICS	2.1
Federal Home Loan Mortgage Corp. REMICS	1.2
French Republic Government Bonds OAT	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030633

Shareholder Report [Line Items]

Fund Name

PIMCO Inflation Protected Bond Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Inflation Protected Bond Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$71	1.43%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 71

Expense Ratio, Percent

1.43%

^[67]

AssetsNet

$ 1,388,544,669

Holdings Count | Holding

657

Advisory Fees Paid, Amount

$ 3,390,151

InvestmentCompanyPortfolioTurnover

90.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,388,544,669
# of Portfolio Investments657
Portfolio Turnover Rate90%
Total Advisory Fees Paid$3,390,151

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Convertible Preferred Stocks	0.1
Corporate Bonds & Notes	1.4
Non-Agency Mortgage-Backed Securities	1.5
Asset-Backed Securities	6.4
Foreign Government	9.2
Agency Sponsored Mortgage-Backed Securities	18.4
Short-Term Investments	59.5
U.S. Treasury & Government Agencies	95.2

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Inflation-Indexed Notes	65.0
U.S. Treasury Inflation-Indexed Bonds	30.1
Uniform Mortgage-Backed Security, TBA	10.9
Italy Buoni Poliennali Del Tesoro	2.5
Japan Government CPI-Linked Bonds	2.4
Government National Mortgage Association	2.2
U.K. Gilts	2.1
Government National Mortgage Association REMICS	2.1
Federal Home Loan Mortgage Corp. REMICS	1.2
French Republic Government Bonds OAT	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030635

Shareholder Report [Line Items]

Fund Name

PIMCO Total Return Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Total Return Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$31	0.62%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 31

Expense Ratio, Percent

0.62%

^[68]

AssetsNet

$ 3,421,109,516

Holdings Count | Holding

1,679

Advisory Fees Paid, Amount

$ 7,808,351

InvestmentCompanyPortfolioTurnover

248.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$3,421,109,516
# of Portfolio Investments1,679
Portfolio Turnover Rate248%
Total Advisory Fees Paid$7,808,351

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Floating Rate Loans	0.3
Municipals	0.8
Short-Term Investments	2.2
Asset-Backed Securities	6.4
Foreign Government	9.9
Non-Agency Mortgage-Backed Securities	10.4
U.S. Treasury & Government Agencies	24.1
Corporate Bonds & Notes	40.8
Agency Sponsored Mortgage-Backed Securities	44.8

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Uniform Mortgage-Backed Security, TBA	31.0
U.S. Treasury Bonds	16.6
Government National Mortgage Association, TBA	5.6
U.S. Treasury Notes	4.9
Federal National Mortgage Association	2.7
U.S. Treasury Inflation-Indexed Bonds	2.3
Federal Home Loan Mortgage Corp.	1.9
Government National Mortgage Association REMICS	1.8
Benchmark Mortgage Trust	1.4
Government National Mortgage Association	1.1

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030636

Shareholder Report [Line Items]

Fund Name

PIMCO Total Return Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Total Return Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$43	0.87%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.87%

^[69]

AssetsNet

$ 3,421,109,516

Holdings Count | Holding

1,679

Advisory Fees Paid, Amount

$ 7,808,351

InvestmentCompanyPortfolioTurnover

248.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$3,421,109,516
# of Portfolio Investments1,679
Portfolio Turnover Rate248%
Total Advisory Fees Paid$7,808,351

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Floating Rate Loans	0.3
Municipals	0.8
Short-Term Investments	2.2
Asset-Backed Securities	6.4
Foreign Government	9.9
Non-Agency Mortgage-Backed Securities	10.4
U.S. Treasury & Government Agencies	24.1
Corporate Bonds & Notes	40.8
Agency Sponsored Mortgage-Backed Securities	44.8

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Uniform Mortgage-Backed Security, TBA	31.0
U.S. Treasury Bonds	16.6
Government National Mortgage Association, TBA	5.6
U.S. Treasury Notes	4.9
Federal National Mortgage Association	2.7
U.S. Treasury Inflation-Indexed Bonds	2.3
Federal Home Loan Mortgage Corp.	1.9
Government National Mortgage Association REMICS	1.8
Benchmark Mortgage Trust	1.4
Government National Mortgage Association	1.1

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030638

Shareholder Report [Line Items]

Fund Name

PIMCO Total Return Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the PIMCO Total Return Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$38	0.77%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 38

Expense Ratio, Percent

0.77%

^[70]

AssetsNet

$ 3,421,109,516

Holdings Count | Holding

1,679

Advisory Fees Paid, Amount

$ 7,808,351

InvestmentCompanyPortfolioTurnover

248.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$3,421,109,516
# of Portfolio Investments1,679
Portfolio Turnover Rate248%
Total Advisory Fees Paid$7,808,351

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Floating Rate Loans	0.3
Municipals	0.8
Short-Term Investments	2.2
Asset-Backed Securities	6.4
Foreign Government	9.9
Non-Agency Mortgage-Backed Securities	10.4
U.S. Treasury & Government Agencies	24.1
Corporate Bonds & Notes	40.8
Agency Sponsored Mortgage-Backed Securities	44.8

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Uniform Mortgage-Backed Security, TBA	31.0
U.S. Treasury Bonds	16.6
Government National Mortgage Association, TBA	5.6
U.S. Treasury Notes	4.9
Federal National Mortgage Association	2.7
U.S. Treasury Inflation-Indexed Bonds	2.3
Federal Home Loan Mortgage Corp.	1.9
Government National Mortgage Association REMICS	1.8
Benchmark Mortgage Trust	1.4
Government National Mortgage Association	1.1

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000112671

Shareholder Report [Line Items]

Fund Name

Schroders Global Multi-Asset Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Schroders Global Multi-Asset Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$50	0.98%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

0.98%

^[71]

AssetsNet

$ 573,174,360

Holdings Count | Holding

1,188

Advisory Fees Paid, Amount

$ 1,818,749

InvestmentCompanyPortfolioTurnover

32.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$573,174,360
# of Portfolio Investments1,188
Portfolio Turnover Rate32%
Total Advisory Fees Paid$1,818,749

Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
Wells Fargo & Co.	1.1
Bank of America Corp.	1.0
Dell International LLC/EMC Corp.	0.8
Oracle Corp.	0.8
Morgan Stanley	0.8
AT&T, Inc.	0.8
UBS Group AG	0.7
General Motors Financial Co., Inc.	0.7
Space Exploration Technologies Corp.	0.7
M&T Bank Corp.	0.6

Top 10 Countries

Table Summary
Value	Value
Australia	1.0
Netherlands	1.2
Germany	1.3
Italy	1.3
Switzerland	1.4
France	1.5
Canada	1.5
United Kingdom	1.9
Japan	2.3
United States	72.6

Asset Allocation

Table Summary
Value	Value
Rights	0.0^{Footnote Reference*}
Preferred Stocks	0.0^{Footnote Reference*}
Investment Companies	0.3
Short-Term Investments	6.8
Corporate Bonds & Notes	39.0
Common Stocks	50.1

Footnote	Description
Footnote^*	Amount rounds to less than 0.1%

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
NVIDIA Corp.	2.9
Alphabet, Inc.	2.6
Apple, Inc.	2.4
Microsoft Corp.	1.7
Amazon.com, Inc.	1.4
Broadcom, Inc.	1.2
Meta Platforms, Inc.	0.8
Advanced Micro Devices, Inc.	0.7
JPMorgan Chase & Co.	0.7
Eli Lilly & Co.	0.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000210971

Shareholder Report [Line Items]

Fund Name

State Street Emerging Markets Enhanced Index Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the State Street Emerging Markets Enhanced Index Portfolio (the "Portfolio") (formerly, SSGA Emerging Markets Enhanced Index Portfolio)for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$30	0.53%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 30

Expense Ratio, Percent

0.53%

^[72]

AssetsNet

$ 1,171,620,036

Holdings Count | Holding

589

Advisory Fees Paid, Amount

$ 2,614,492

InvestmentCompanyPortfolioTurnover

9.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,171,620,036
# of Portfolio Investments589
Portfolio Turnover Rate9%
Total Advisory Fees Paid$2,614,492

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	2.0
Consumer Staples	2.4
Health Care	2.4
Energy	3.1
Materials	5.3
Communication Services	5.6
Industrials	6.6
Consumer Discretionary	6.8
Financials	17.4
Information Technology	44.1

Top 10 Countries

Table Summary
Value	Value
Poland	0.9
United Arab Emirates	1.1
Mexico	1.6
Saudi Arabia	2.2
South Africa	2.5
Brazil	3.6
India	10.6
China	17.9
South Korea	23.5
Taiwan	26.8

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co. Ltd.	14.8
Samsung Electronics Co. Ltd.	9.1
SK Hynix, Inc.	7.7
Tencent Holdings Ltd.	2.8
MediaTek, Inc.	1.7
Alibaba Group Holding Ltd.	1.5
Delta Electronics, Inc.	1.1
Hon Hai Precision Industry Co. Ltd.	1.0
SK Square Co. Ltd.	0.8
ASE Technology Holding Co. Ltd.	0.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000210968

Shareholder Report [Line Items]

Fund Name

State Street Emerging Markets Enhanced Index Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$45	0.79%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 45

Expense Ratio, Percent

0.79%

^[73]

AssetsNet

$ 1,171,620,036

Holdings Count | Holding

589

Advisory Fees Paid, Amount

$ 2,614,492

InvestmentCompanyPortfolioTurnover

9.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,171,620,036
# of Portfolio Investments589
Portfolio Turnover Rate9%
Total Advisory Fees Paid$2,614,492

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	2.0
Consumer Staples	2.4
Health Care	2.4
Energy	3.1
Materials	5.3
Communication Services	5.6
Industrials	6.6
Consumer Discretionary	6.8
Financials	17.4
Information Technology	44.1

Top 10 Countries

Table Summary
Value	Value
Poland	0.9
United Arab Emirates	1.1
Mexico	1.6
Saudi Arabia	2.2
South Africa	2.5
Brazil	3.6
India	10.6
China	17.9
South Korea	23.5
Taiwan	26.8

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co. Ltd.	14.8
Samsung Electronics Co. Ltd.	9.1
SK Hynix, Inc.	7.7
Tencent Holdings Ltd.	2.8
MediaTek, Inc.	1.7
Alibaba Group Holding Ltd.	1.5
Delta Electronics, Inc.	1.1
Hon Hai Precision Industry Co. Ltd.	1.0
SK Square Co. Ltd.	0.8
ASE Technology Holding Co. Ltd.	0.8

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030695

Shareholder Report [Line Items]

Fund Name

State Street Moderate ETF Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the State Street Moderate ETF Portfolio (the "Portfolio") (formerly, SSGA Growth and Income ETF Portfolio) for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$17	0.33%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.33%

^[74]

AssetsNet

$ 1,666,330,873

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,569,963

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,666,330,873
# of Portfolio Investments54
Portfolio Turnover Rate25%
Total Advisory Fees Paid$2,569,963

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
U.S. Mid Cap Equities	3.2
U.S. Small Cap Equities	4.3
Commodities	7.9
International Developed Market Equities	9.5
Emerging Market Equities	10.0
High Yield Fixed Income	12.3
Investment Grade Fixed Income	16.6
U.S. Large Cap Equities	35.1

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	20.9
iShares Core S&P 500 ETF	14.2
iShares Core MSCI Emerging Markets ETF	10.0
State Street SPDR Portfolio Developed World ex-U.S. ETF	7.6
Vanguard Total Bond Market ETF	7.3
State Street SPDR Bloomberg High Yield Bond ETF	7.2
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	4.4
iShares Core S&P Small-Cap ETF	4.3
iShares 0-5 Year TIPS Bond ETF	4.1
SPDR Gold Shares	3.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030696

Shareholder Report [Line Items]

Fund Name

State Street Moderate ETF Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$30	0.58%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 30

Expense Ratio, Percent

0.58%

^[75]

AssetsNet

$ 1,666,330,873

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,569,963

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,666,330,873
# of Portfolio Investments54
Portfolio Turnover Rate25%
Total Advisory Fees Paid$2,569,963

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
U.S. Mid Cap Equities	3.2
U.S. Small Cap Equities	4.3
Commodities	7.9
International Developed Market Equities	9.5
Emerging Market Equities	10.0
High Yield Fixed Income	12.3
Investment Grade Fixed Income	16.6
U.S. Large Cap Equities	35.1

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	20.9
iShares Core S&P 500 ETF	14.2
iShares Core MSCI Emerging Markets ETF	10.0
State Street SPDR Portfolio Developed World ex-U.S. ETF	7.6
Vanguard Total Bond Market ETF	7.3
State Street SPDR Bloomberg High Yield Bond ETF	7.2
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	4.4
iShares Core S&P Small-Cap ETF	4.3
iShares 0-5 Year TIPS Bond ETF	4.1
SPDR Gold Shares	3.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030698

Shareholder Report [Line Items]

Fund Name

State Street Moderate ETF Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$25	0.48%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 25

Expense Ratio, Percent

0.48%

^[76]

AssetsNet

$ 1,666,330,873

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,569,963

InvestmentCompanyPortfolioTurnover

25.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,666,330,873
# of Portfolio Investments54
Portfolio Turnover Rate25%
Total Advisory Fees Paid$2,569,963

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
U.S. Mid Cap Equities	3.2
U.S. Small Cap Equities	4.3
Commodities	7.9
International Developed Market Equities	9.5
Emerging Market Equities	10.0
High Yield Fixed Income	12.3
Investment Grade Fixed Income	16.6
U.S. Large Cap Equities	35.1

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	20.9
iShares Core S&P 500 ETF	14.2
iShares Core MSCI Emerging Markets ETF	10.0
State Street SPDR Portfolio Developed World ex-U.S. ETF	7.6
Vanguard Total Bond Market ETF	7.3
State Street SPDR Bloomberg High Yield Bond ETF	7.2
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	4.4
iShares Core S&P Small-Cap ETF	4.3
iShares 0-5 Year TIPS Bond ETF	4.1
SPDR Gold Shares	3.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030700

Shareholder Report [Line Items]

Fund Name

State Street Moderately Aggressive ETF Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the State Street Moderately Aggressive ETF Portfolio (the "Portfolio") (formerly, SSGA Growth ETF Portfolio) for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$19	0.36%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 19

Expense Ratio, Percent

0.36%

^[77]

AssetsNet

$ 778,965,044

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 1,225,426

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$778,965,044
# of Portfolio Investments40
Portfolio Turnover Rate18%
Total Advisory Fees Paid$1,225,426

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Eastate Equities	1.0
Investment Grade Fixed Income	2.7
U.S. Mid Cap Equities	4.7
U.S. Small Cap Equities	6.0
High Yield Fixed Income	6.2
Commodities	8.3
Emerging Market Equities	12.5
International Developed Market Equities	15.1
U.S. Large Cap Equities	42.2

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	24.4
iShares Core S&P 500 ETF	17.7
iShares Core MSCI Emerging Markets ETF	12.5
State Street SPDR Portfolio Developed World ex-U.S. ETF	12.1
iShares Core S&P Small-Cap ETF	6.0
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	5.1
iShares Core S&P Mid-Cap ETF	4.7
SPDR Gold Shares	3.2
State Street SPDR Bloomberg High Yield Bond ETF	3.1
Schwab International Small-Cap Equity ETF	3.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030701

Shareholder Report [Line Items]

Fund Name

State Street Moderately Aggressive ETF Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$32	0.61%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.61%

^[78]

AssetsNet

$ 778,965,044

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 1,225,426

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$778,965,044
# of Portfolio Investments40
Portfolio Turnover Rate18%
Total Advisory Fees Paid$1,225,426

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Eastate Equities	1.0
Investment Grade Fixed Income	2.7
U.S. Mid Cap Equities	4.7
U.S. Small Cap Equities	6.0
High Yield Fixed Income	6.2
Commodities	8.3
Emerging Market Equities	12.5
International Developed Market Equities	15.1
U.S. Large Cap Equities	42.2

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	24.4
iShares Core S&P 500 ETF	17.7
iShares Core MSCI Emerging Markets ETF	12.5
State Street SPDR Portfolio Developed World ex-U.S. ETF	12.1
iShares Core S&P Small-Cap ETF	6.0
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	5.1
iShares Core S&P Mid-Cap ETF	4.7
SPDR Gold Shares	3.2
State Street SPDR Bloomberg High Yield Bond ETF	3.1
Schwab International Small-Cap Equity ETF	3.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030703

Shareholder Report [Line Items]

Fund Name

State Street Moderately Aggressive ETF Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$27	0.51%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 27

Expense Ratio, Percent

0.51%

^[79]

AssetsNet

$ 778,965,044

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 1,225,426

InvestmentCompanyPortfolioTurnover

18.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$778,965,044
# of Portfolio Investments40
Portfolio Turnover Rate18%
Total Advisory Fees Paid$1,225,426

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Real Eastate Equities	1.0
Investment Grade Fixed Income	2.7
U.S. Mid Cap Equities	4.7
U.S. Small Cap Equities	6.0
High Yield Fixed Income	6.2
Commodities	8.3
Emerging Market Equities	12.5
International Developed Market Equities	15.1
U.S. Large Cap Equities	42.2

Largest Holdings [Text Block]

Top 10 Holdings

Table Summary
State Street SPDR S&P 500 ETF Trust	24.4
iShares Core S&P 500 ETF	17.7
iShares Core MSCI Emerging Markets ETF	12.5
State Street SPDR Portfolio Developed World ex-U.S. ETF	12.1
iShares Core S&P Small-Cap ETF	6.0
Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF	5.1
iShares Core S&P Mid-Cap ETF	4.7
SPDR Gold Shares	3.2
State Street SPDR Bloomberg High Yield Bond ETF	3.1
Schwab International Small-Cap Equity ETF	3.0

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030576

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Large Cap Value Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Large Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$28	0.52%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 28

Expense Ratio, Percent

0.52%

^[80]

AssetsNet

$ 2,599,621,643

Holdings Count | Holding

113

Advisory Fees Paid, Amount

$ 6,282,484

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,599,621,643
# of Portfolio Investments113
Portfolio Turnover Rate30%
Total Advisory Fees Paid$6,282,484

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	2.4
Materials	4.2
Utilities	4.3
Consumer Staples	6.4
Energy	7.1
Consumer Discretionary	9.2
Industrials	11.6
Health Care	14.2
Financials	17.9
Information Technology	20.1

Top Countries

Table Summary
Value	Value
Germany	0.5
Switzerland	0.7
United Kingdom	0.8
France	1.2
United States	96.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Amazon.com, Inc.	6.4
Apple, Inc.	5.4
Microsoft Corp.	4.1
Bank of America Corp.	3.5
CSX Corp.	2.6
ConocoPhillips	2.4
Chubb Ltd.	2.4
Charles Schwab Corp.	2.4
Procter & Gamble Co.	2.2
Colgate-Palmolive Co.	2.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030577

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Large Cap Value Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Large Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$41	0.77%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 41

Expense Ratio, Percent

0.77%

^[81]

AssetsNet

$ 2,599,621,643

Holdings Count | Holding

113

Advisory Fees Paid, Amount

$ 6,282,484

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,599,621,643
# of Portfolio Investments113
Portfolio Turnover Rate30%
Total Advisory Fees Paid$6,282,484

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	2.4
Materials	4.2
Utilities	4.3
Consumer Staples	6.4
Energy	7.1
Consumer Discretionary	9.2
Industrials	11.6
Health Care	14.2
Financials	17.9
Information Technology	20.1

Top Countries

Table Summary
Value	Value
Germany	0.5
Switzerland	0.7
United Kingdom	0.8
France	1.2
United States	96.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Amazon.com, Inc.	6.4
Apple, Inc.	5.4
Microsoft Corp.	4.1
Bank of America Corp.	3.5
CSX Corp.	2.6
ConocoPhillips	2.4
Chubb Ltd.	2.4
Charles Schwab Corp.	2.4
Procter & Gamble Co.	2.2
Colgate-Palmolive Co.	2.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030579

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Large Cap Value Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Large Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$36	0.67%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 36

Expense Ratio, Percent

0.67%

^[82]

AssetsNet

$ 2,599,621,643

Holdings Count | Holding

113

Advisory Fees Paid, Amount

$ 6,282,484

InvestmentCompanyPortfolioTurnover

30.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$2,599,621,643
# of Portfolio Investments113
Portfolio Turnover Rate30%
Total Advisory Fees Paid$6,282,484

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Real Estate	2.4
Materials	4.2
Utilities	4.3
Consumer Staples	6.4
Energy	7.1
Consumer Discretionary	9.2
Industrials	11.6
Health Care	14.2
Financials	17.9
Information Technology	20.1

Top Countries

Table Summary
Value	Value
Germany	0.5
Switzerland	0.7
United Kingdom	0.8
France	1.2
United States	96.6

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Amazon.com, Inc.	6.4
Apple, Inc.	5.4
Microsoft Corp.	4.1
Bank of America Corp.	3.5
CSX Corp.	2.6
ConocoPhillips	2.4
Chubb Ltd.	2.4
Charles Schwab Corp.	2.4
Procter & Gamble Co.	2.2
Colgate-Palmolive Co.	2.2

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030650

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Mid Cap Growth Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Mid Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$34	0.67%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.67%

^[83]

AssetsNet

$ 1,122,008,595

Holdings Count | Holding

175

Advisory Fees Paid, Amount

$ 3,450,656

InvestmentCompanyPortfolioTurnover

37.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,122,008,595
# of Portfolio Investments175
Portfolio Turnover Rate37%
Total Advisory Fees Paid$3,450,656

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	0.9
Materials	1.5
Communication Services	3.2
Consumer Staples	3.4
Energy	3.9
Financials	6.6
Consumer Discretionary	13.5
Health Care	18.4
Industrials	19.5
Information Technology	27.0

Top Countries

Table Summary
Value	Value
Cayman Islands	0.1
Netherlands	0.5
Switzerland	0.6
Denmark	0.7
Thailand	0.9
Germany	1.2
United Kingdom	1.2
Canada	1.9
United States	90.8

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Agilent Technologies, Inc.	2.4
Keysight Technologies, Inc.	2.1
Mettler-Toledo International, Inc.	2.0
Teradyne, Inc.	2.0
MACOM Technology Solutions Holdings, Inc.	2.0
Datadog, Inc.	1.9
Yum! Brands, Inc.	1.8
Burlington Stores, Inc.	1.7
Lattice Semiconductor Corp.	1.7
Assurant, Inc.	1.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030651

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Mid Cap Growth Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Mid Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$47	0.92%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.92%

^[84]

AssetsNet

$ 1,122,008,595

Holdings Count | Holding

175

Advisory Fees Paid, Amount

$ 3,450,656

InvestmentCompanyPortfolioTurnover

37.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,122,008,595
# of Portfolio Investments175
Portfolio Turnover Rate37%
Total Advisory Fees Paid$3,450,656

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	0.9
Materials	1.5
Communication Services	3.2
Consumer Staples	3.4
Energy	3.9
Financials	6.6
Consumer Discretionary	13.5
Health Care	18.4
Industrials	19.5
Information Technology	27.0

Top Countries

Table Summary
Value	Value
Cayman Islands	0.1
Netherlands	0.5
Switzerland	0.6
Denmark	0.7
Thailand	0.9
Germany	1.2
United Kingdom	1.2
Canada	1.9
United States	90.8

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Agilent Technologies, Inc.	2.4
Keysight Technologies, Inc.	2.1
Mettler-Toledo International, Inc.	2.0
Teradyne, Inc.	2.0
MACOM Technology Solutions Holdings, Inc.	2.0
Datadog, Inc.	1.9
Yum! Brands, Inc.	1.8
Burlington Stores, Inc.	1.7
Lattice Semiconductor Corp.	1.7
Assurant, Inc.	1.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030653

Shareholder Report [Line Items]

Fund Name

T. Rowe Price Mid Cap Growth Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the T. Rowe Price Mid Cap Growth Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$42	0.82%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 42

Expense Ratio, Percent

0.82%

^[85]

AssetsNet

$ 1,122,008,595

Holdings Count | Holding

175

Advisory Fees Paid, Amount

$ 3,450,656

InvestmentCompanyPortfolioTurnover

37.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,122,008,595
# of Portfolio Investments175
Portfolio Turnover Rate37%
Total Advisory Fees Paid$3,450,656

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Utilities	0.9
Materials	1.5
Communication Services	3.2
Consumer Staples	3.4
Energy	3.9
Financials	6.6
Consumer Discretionary	13.5
Health Care	18.4
Industrials	19.5
Information Technology	27.0

Top Countries

Table Summary
Value	Value
Cayman Islands	0.1
Netherlands	0.5
Switzerland	0.6
Denmark	0.7
Thailand	0.9
Germany	1.2
United Kingdom	1.2
Canada	1.9
United States	90.8

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Agilent Technologies, Inc.	2.4
Keysight Technologies, Inc.	2.1
Mettler-Toledo International, Inc.	2.0
Teradyne, Inc.	2.0
MACOM Technology Solutions Holdings, Inc.	2.0
Datadog, Inc.	1.9
Yum! Brands, Inc.	1.8
Burlington Stores, Inc.	1.7
Lattice Semiconductor Corp.	1.7
Assurant, Inc.	1.5

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000154912

Shareholder Report [Line Items]

Fund Name

TCW Core Fixed Income Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the TCW Core Fixed Income Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$23	0.46%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.46%

^[86]

AssetsNet

$ 1,265,355,440

Holdings Count | Holding

410

Advisory Fees Paid, Amount

$ 2,740,198

InvestmentCompanyPortfolioTurnover

255.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,265,355,440
# of Portfolio Investments410
Portfolio Turnover Rate255%
Total Advisory Fees Paid$2,740,198

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Foreign Government	0.3
Short-Term Investments	6.4
Non-Agency Mortgage-Backed Securities	10.0
Asset-Backed Securities	11.7
Corporate Bonds & Notes	14.4
Agency Sponsored Mortgage-Backed Securities	35.7
U.S. Treasury & Government Agencies	37.3

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	30.1
Uniform Mortgage-Backed Security, TBA	11.0
Federal National Mortgage Association	11.0
U.S. Treasury Bonds	7.2
Federal Home Loan Mortgage Corp.	6.0
Government National Mortgage Association, TBA	4.2
Government National Mortgage Association	2.1
JP Morgan Mortgage Trust	1.0
SLM Student Loan Trust	0.8
CIM Trust	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000154913

Shareholder Report [Line Items]

Fund Name

TCW Core Fixed Income Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the TCW Core Fixed Income Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$35	0.71%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.71%

^[87]

AssetsNet

$ 1,265,355,440

Holdings Count | Holding

410

Advisory Fees Paid, Amount

$ 2,740,198

InvestmentCompanyPortfolioTurnover

255.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$1,265,355,440
# of Portfolio Investments410
Portfolio Turnover Rate255%
Total Advisory Fees Paid$2,740,198

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Foreign Government	0.3
Short-Term Investments	6.4
Non-Agency Mortgage-Backed Securities	10.0
Asset-Backed Securities	11.7
Corporate Bonds & Notes	14.4
Agency Sponsored Mortgage-Backed Securities	35.7
U.S. Treasury & Government Agencies	37.3

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Notes	30.1
Uniform Mortgage-Backed Security, TBA	11.0
Federal National Mortgage Association	11.0
U.S. Treasury Bonds	7.2
Federal Home Loan Mortgage Corp.	6.0
Government National Mortgage Association, TBA	4.2
Government National Mortgage Association	2.1
JP Morgan Mortgage Trust	1.0
SLM Student Loan Trust	0.8
CIM Trust	0.7

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030586

Shareholder Report [Line Items]

Fund Name

Victory Sycamore Mid Cap Value Portfolio

Class Name

Class A

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Victory Sycamore Mid Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$32	0.60%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.60%

^[88]

AssetsNet

$ 883,085,116

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,398,721

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$883,085,116
# of Portfolio Investments98
Portfolio Turnover Rate35%
Total Advisory Fees Paid$2,398,721

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Consumer Staples	4.8
Utilities	5.5
Real Estate	6.1
Energy	6.7
Financials	7.6
Health Care	8.8
Materials	10.1
Information Technology	11.5
Consumer Discretionary	12.6
Industrials	23.6

Top Countries

Table Summary
Value	Value
United States	97.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Labcorp Holdings, Inc.	2.6
U.S. Foods Holding Corp.	2.3
Molina Healthcare, Inc.	2.1
Alliant Energy Corp.	2.1
Microchip Technology, Inc.	2.0
Packaging Corp. of America	2.0
RPM International, Inc.	1.9
Keysight Technologies, Inc.	1.9
Truist Financial Corp.	1.9
Hubbell, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030587

Shareholder Report [Line Items]

Fund Name

Victory Sycamore Mid Cap Value Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Victory Sycamore Mid Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$45	0.85%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 45

Expense Ratio, Percent

0.85%

^[89]

AssetsNet

$ 883,085,116

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,398,721

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$883,085,116
# of Portfolio Investments98
Portfolio Turnover Rate35%
Total Advisory Fees Paid$2,398,721

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Consumer Staples	4.8
Utilities	5.5
Real Estate	6.1
Energy	6.7
Financials	7.6
Health Care	8.8
Materials	10.1
Information Technology	11.5
Consumer Discretionary	12.6
Industrials	23.6

Top Countries

Table Summary
Value	Value
United States	97.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Labcorp Holdings, Inc.	2.6
U.S. Foods Holding Corp.	2.3
Molina Healthcare, Inc.	2.1
Alliant Energy Corp.	2.1
Microchip Technology, Inc.	2.0
Packaging Corp. of America	2.0
RPM International, Inc.	1.9
Keysight Technologies, Inc.	1.9
Truist Financial Corp.	1.9
Hubbell, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000030589

Shareholder Report [Line Items]

Fund Name

Victory Sycamore Mid Cap Value Portfolio

Class Name

Class E

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Victory Sycamore Mid Cap Value Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class E	$40	0.75%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 40

Expense Ratio, Percent

0.75%

^[90]

AssetsNet

$ 883,085,116

Holdings Count | Holding

Advisory Fees Paid, Amount

$ 2,398,721

InvestmentCompanyPortfolioTurnover

35.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$883,085,116
# of Portfolio Investments98
Portfolio Turnover Rate35%
Total Advisory Fees Paid$2,398,721

Holdings [Text Block]

Top 10 Sectors

Table Summary
Value	Value
Consumer Staples	4.8
Utilities	5.5
Real Estate	6.1
Energy	6.7
Financials	7.6
Health Care	8.8
Materials	10.1
Information Technology	11.5
Consumer Discretionary	12.6
Industrials	23.6

Top Countries

Table Summary
Value	Value
United States	97.3

Largest Holdings [Text Block]

Top 10 Equity Holdings

Table Summary
Labcorp Holdings, Inc.	2.6
U.S. Foods Holding Corp.	2.3
Molina Healthcare, Inc.	2.1
Alliant Energy Corp.	2.1
Microchip Technology, Inc.	2.0
Packaging Corp. of America	2.0
RPM International, Inc.	1.9
Keysight Technologies, Inc.	1.9
Truist Financial Corp.	1.9
Hubbell, Inc.	1.9

Material Fund Change [Text Block]

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

C000100091

Shareholder Report [Line Items]

Fund Name

Western Asset Management Government Income Portfolio

Class Name

Class B

No Trading Symbol [Flag]

true

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about the Western Asset Management Government Income Portfolio (the "Portfolio") for the period of January 1, 2026 to June 30, 2026.

Additional Information [Text Block]

You can find additional information about the Portfolio at https://dfinview.com/BHFT. You can also request this information by contacting us at 1-888-243-1956.

Additional Information Phone Number

1-888-243-1956

Additional Information Website

Expenses [Text Block]

What were the Portfolio costs for last six months?

This example shows the expenses you would have paid over the reporting period based on a hypothetical $10,000 investment.

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class B	$37	0.75%^{Footnote Reference*}

Footnote	Description
Footnote^*	Annualized.

Expenses Paid, Amount

$ 37

Expense Ratio, Percent

0.75%

^[91]

AssetsNet

$ 452,947,944

Holdings Count | Holding

450

Advisory Fees Paid, Amount

$ 947,068

InvestmentCompanyPortfolioTurnover

77.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Total Net Assets$452,947,944
# of Portfolio Investments450
Portfolio Turnover Rate77%
Total Advisory Fees Paid$947,068

Holdings [Text Block]

Asset Allocation

Table Summary
Value	Value
Non-Agency Mortgage-Backed Securities	1.7
Short-Term Investments	2.1
Foreign Government	5.9
Agency Sponsored Mortgage-Backed Securities	36.2
U.S. Treasury & Government Agencies	59.4

Largest Holdings [Text Block]

Top 10 Fixed Income Issuers

Table Summary
U.S. Treasury Bonds	16.5
Federal Home Loan Mortgage Corp.	16.4
Resolution Funding Corp. Principal STRIPS	13.3
Federal National Mortgage Association	11.8
Federal Farm Credit Banks Funding Corp.	8.3
U.S. Treasury Notes	4.2
Government National Mortgage Association	3.8
Uniform Mortgage-Backed Security	3.2
Federal Home Loan Mortgage Corp. STRIPS	2.9
Government National Mortgage Association, TBA	2.6

Updated Prospectus Phone Number

1-888-243-1956

Updated Prospectus Web Address

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