Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Document Type

dei_DocumentType

Other

Document Period End Date

dei_DocumentPeriodEndDate

Jan. 31, 2012

Registrant Name

dei_EntityRegistrantName

COLUMBIA FUNDS SERIES TRUST

Central Index Key

dei_EntityCentralIndexKey

0001097519

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Jan. 02, 2013

Document Effective Date

dei_DocumentEffectiveDate

Jan. 02, 2013

Prospectus Date

rr_ProspectusDate

Jan. 02, 2013

Supplement - [Text Block]

columbia_SupplementTextBlock_03

COLUMBIA FUNDS SERIES TRUST

COLUMBIA CAPITAL ALLOCATION MODERATE AGGRESSIVE PORTFOLIO

COLUMBIA CAPITAL ALLOCATION MODERATE CONSERVATIVE PORTFOLIO

(each a “Fund,” together the “Funds”)

Supplement dated January 2, 2013 to the

Funds’ prospectuses dated June 1, 2012 and November 8, 2012, as supplemented

(Columbia Capital Allocation Moderate Aggressive Portfolio)

Risk/Return:

rr_RiskReturnAbstract

Strategy Narrative - Supplement [Text Block]

columbia_SupplementTextBlock

Effective immediately, the section of each prospectus for Columbia Capital Allocation Moderate Aggressive Portfolio entitled "Principal Investment Strategies" is modified by deleting the table entitled "Asset Class Exposures" and replacing it with the following:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Asset Class Exposures

	Equity	Fixed Income	Cash/Cash Equivalents	Alternatives
Columbia Capital Allocation Moderate Aggressive Portfolio	20-85%*	15-60%*	0-40%*	0-40%*

*As a percent of Fund net assets. Ranges include the net notional amounts of the Fund’s direct investments in derivative instruments. Market appreciation or depreciation may cause the Fund to be temporarily outside the ranges identified in the table. The Investment Manager may modify the target allocation ranges only with the approval of the Fund’s Board.

(Columbia Capital Allocation Moderate Conservative Portfolio)

Risk/Return:

rr_RiskReturnAbstract

Strategy Narrative - Supplement [Text Block]

columbia_SupplementTextBlock

Effective immediately, the section of each prospectus for Columbia Capital Allocation Moderate Conservative Portfolio entitled "Principal Investment Strategies" is modified by deleting the table entitled "Asset Class Exposures" and replacing it with the following:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Asset Class Exposures

	Equity	Fixed Income	Cash/Cash Equivalents	Alternatives
Columbia Capital Allocation Moderate Conservative Portfolio	0-55%*	40-85%*	0-40%*	0-40%*

*As a percent of Fund net assets. Ranges include the net notional amounts of the Fund’s direct investments in derivative instruments. Market appreciation or depreciation may cause the Fund to be temporarily outside the ranges identified in the table. The Investment Manager may modify the target allocation ranges only with the approval of the Fund’s Board.