S000031359 [Member] Expense Example - Columbia Capital Allocation Conservative Portfolio	Jan. 31, 2026 USD ($)
Columbia Capital Allocation Conservative Portfolio Class A
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 567
Expense Example, with Redemption, 3 Years	765
Expense Example, with Redemption, 5 Years	980
Expense Example, with Redemption, 10 Years	1,596
Columbia Capital Allocation Conservative Portfolio Class C
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	273
Expense Example, with Redemption, 3 Years	538
Expense Example, with Redemption, 5 Years	927
Expense Example, with Redemption, 10 Years	1,820
Columbia Capital Allocation Conservative Portfolio Institutional Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	72
Expense Example, with Redemption, 3 Years	226
Expense Example, with Redemption, 5 Years	394
Expense Example, with Redemption, 10 Years	$ 882

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