T. Rowe Price Large Cap Value Portfolio Investment Objectives and Goals - T. Rowe Price Large Cap Value Portfolio	Dec. 31, 2025
Prospectus [Line Items]
Risk/Return [Heading]	<span style="color:#000000;font-family:Times New Roman;font-size:22pt;">T. Rowe Price Large Cap Value Portfolio</span>
Objective [Heading]	<span style="color:#000000;font-family:Times New Roman;font-size:11.5pt;font-weight:bold;">Investment Objectives</span>
Objective, Primary [Text Block]	Long-term capital appreciation by investing in common stocks believed to be undervalued.
Objective, Secondary [Text Block]	Income is a secondary objective.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Name:	oef_ObjectivePrimaryTextBlock
Namespace Prefix:	oef_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 2
-Subsection a

Name:	oef_ObjectiveSecondaryTextBlock
Namespace Prefix:	oef_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Section 2
-Name Form N-1A
-Subsection a

Name:	dei_LegalEntityAxis=bhf_S000011088Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: