Expense Example	Dec. 31, 2024 USD ($)
Transamerica BlackRock iShares Tactical - Balanced VP \| Initial
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 60
Expense Example, with Redemption, 3 Years	206
Expense Example, with Redemption, 5 Years	365
Expense Example, with Redemption, 10 Years	827
Transamerica BlackRock iShares Tactical - Balanced VP \| Service
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	86
Expense Example, with Redemption, 3 Years	285
Expense Example, with Redemption, 5 Years	501
Expense Example, with Redemption, 10 Years	1,124
Transamerica BlackRock iShares Tactical - Conservative VP \| Initial
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	61
Expense Example, with Redemption, 3 Years	212
Expense Example, with Redemption, 5 Years	375
Expense Example, with Redemption, 10 Years	850
Transamerica BlackRock iShares Tactical - Conservative VP \| Service
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	87
Expense Example, with Redemption, 3 Years	291
Expense Example, with Redemption, 5 Years	511
Expense Example, with Redemption, 10 Years	$ 1,146

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