N-4

Oct. 28, 2025

Prospectus:

Document Type

N-4

Entity Registrant Name

SEPARATE ACCOUNT VA B

Entity Central Index Key

0000859607

Entity Investment Company Type

N-4

Document Period End Date

Oct. 28, 2025

Amendment Flag

false

Item 17. Investment Options [Line Items]

Investment Options (N-4) [Text Block]

Investment Objective	Underlying Fund Portfolio and (1) Adviser/Sub-adviser			Current Expenses Plus Platform Charges	Average Annual Total Returns (as of 12/31/24)
		Current Expenses	Platform Charges		1 year	5 years	10 years
Seeks capital growth. Current income is a secondary objective.	Putnam VT International Value Fund – Class IB Advised by: Putnam Investment Management, LLC, Subadvised by: Franklin Advisers, Inc.	1.07%	0.15%	1.22%	5.21%	6.81%	5.46%

Variable Option [Line Items]

Portfolio Companies [Table Text Block]

Investment Objective	Underlying Fund Portfolio and (1) Adviser/Sub-adviser			Current Expenses Plus Platform Charges	Average Annual Total Returns (as of 12/31/24)
		Current Expenses	Platform Charges		1 year	5 years	10 years
Seeks capital growth. Current income is a secondary objective.	Putnam VT International Value Fund – Class IB Advised by: Putnam Investment Management, LLC, Subadvised by: Franklin Advisers, Inc.	1.07%	0.15%	1.22%	5.21%	6.81%	5.46%

Putnam VT International Value Fund – Class IB [Member]

Variable Option [Line Items]

Portfolio Company Objective [Text Block]

Seeks capital growth. Current income is a secondary objective.

Portfolio Company Name [Text Block]

Putnam VT International Value Fund – Class IB

Portfolio Company Adviser [Text Block]

Putnam Investment Management, LLC,

Portfolio Company Subadviser [Text Block]

Franklin Advisers, Inc.

Current Expenses [Percent]

1.07%

Platform Charge [Percent]

0.15%

Current Expenses + Platform Charge [Percent]

1.22%

Average Annual Total Returns, 1 Year [Percent]

5.21%

Average Annual Total Returns, 5 Years [Percent]

6.81%

Average Annual Total Returns, 10 Years [Percent]

5.46%