3.25.3 html 2 10 1 false 1 0 false 1 false false R1.htm 010004 - Disclosure - N-4 Sheet http://xbrl.sec.gov/vip/role/N4 N-4 Cover 1 false false All Reports Book All Reports tasavab-20251028.htm tasavab-20251028.xsd tasavab-20251028_def.xml tasavab-20251028_lab.xml tasavab-20251028_pre.xml http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/vip/2025 true false