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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType Other
Document Period End Date dei_DocumentPeriodEndDate Mar. 07, 2011
Registrant Name dei_EntityRegistrantName Columbia Funds Series Trust II
Central Index Key dei_EntityCentralIndexKey 0001352280
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Dec. 29, 2011
Document Effective Date dei_DocumentEffectiveDate Dec. 29, 2011
Prospectus Date rr_ProspectusDate Feb. 18, 2011
Columbia Asia Pacific ex-Japan Fund
  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] rst1352280_SupplementTextBlock
Prospectus Supplement — January 1, 2012
to the Prospectuses, as supplemented, of the following fund:
 Fund Prospectuses Dated
 Columbia Asia Pacific ex-Japan Fund 12/30/2010
The following changes are hereby made to the prospectuses of the Fund:
Fees and Expenses of the Fund rst1352280_FundFeesAndExpensesAbstract  
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Supplement Expense [Text Block] rst1352280_SupplementExpenseTextBlock The fee and expense table in the section entitled "Fees and Expenses of the Fund" is hereby replaced with the following:
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) [1]
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Expense ratios have been adjusted to reflect current fees.
Supplement Expense Example [Text Block] rst1352280_SupplementExpenseExampleTextBlock The Example in the section entitled "Fees and Expenses of the Fund" is hereby replaced with the following:
Example rr_ExpenseExampleAbstract  
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem your shares at the end of those periods (unless otherwise noted). The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Columbia Asia Pacific ex-Japan Fund | Class A
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class A
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther 1.00%
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class A
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.41%
Total annual fund operating expenses rr_ExpensesOverAssets 1.45%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class A (whether or not shares are redeemed)
1 year rr_ExpenseExampleYear01 714
3 years rr_ExpenseExampleYear03 1,008
5 years rr_ExpenseExampleYear05 1,323
10 years rr_ExpenseExampleYear10 2,215
Columbia Asia Pacific ex-Japan Fund | Class C
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther 1.00%
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class C
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.41%
Total annual fund operating expenses rr_ExpensesOverAssets 2.20%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class C (if shares are redeemed)
1 year rr_ExpenseExampleYear01 323
3 years rr_ExpenseExampleYear03 688
5 years rr_ExpenseExampleYear05 1,181
10 years rr_ExpenseExampleYear10 2,539
Expense Example, No Redemption rr_ExpenseExampleNoRedemptionAbstract  
Expense Example, No Redemption, By Year, Column [Text] rr_ExpenseExampleNoRedemptionByYearColumnName Class C (if shares are not redeemed)
1 year rr_ExpenseExampleNoRedemptionYear01 223
3 years rr_ExpenseExampleNoRedemptionYear03 688
5 years rr_ExpenseExampleNoRedemptionYear05 1,181
10 years rr_ExpenseExampleNoRedemptionYear10 2,539
Columbia Asia Pacific ex-Japan Fund | Class I
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class I
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther none
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class I
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.18%
Total annual fund operating expenses rr_ExpensesOverAssets 0.97%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class I (whether or not shares are redeemed)
1 year rr_ExpenseExampleYear01 99
3 years rr_ExpenseExampleYear03 309
5 years rr_ExpenseExampleYear05 537
10 years rr_ExpenseExampleYear10 1,194
Columbia Asia Pacific ex-Japan Fund | Class R
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class R
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther none
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class R
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.41%
Total annual fund operating expenses rr_ExpensesOverAssets 1.70%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class R (whether or not shares are redeemed)
1 year rr_ExpenseExampleYear01 173
3 years rr_ExpenseExampleYear03 536
5 years rr_ExpenseExampleYear05 924
10 years rr_ExpenseExampleYear10 2,014
Columbia Asia Pacific ex-Japan Fund | Class R5
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class R5
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther none
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class R5
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.20%
Total annual fund operating expenses rr_ExpensesOverAssets 0.99%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class R5 (whether or not shares are redeemed)
1 year rr_ExpenseExampleYear01 101
3 years rr_ExpenseExampleYear03 316
5 years rr_ExpenseExampleYear05 548
10 years rr_ExpenseExampleYear10 1,218
Columbia Asia Pacific ex-Japan Fund | Class Z
  
Shareholder Fees rr_ShareholderFeesAbstract  
Shareholder Fees Column [Text] rr_ShareholderFeesColumnName Class Z
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum deferred sales charge (load) imposed on redemptions (as a percentage of offering price at the time of purchase, or current net asset value, whichever is less) rr_MaximumDeferredSalesChargeOverOther none
Annual Fund Operating Expenses rr_OperatingExpensesAbstract  
Operating Expenses Column [Text] rr_OperatingExpensesColumnName Class Z
Management fees rr_ManagementFeesOverAssets 0.79%
Distribution and/or service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.41%
Total annual fund operating expenses rr_ExpensesOverAssets 1.20%
Example rr_ExpenseExampleAbstract  
Expense Example, By Year, Column [Text] rr_ExpenseExampleByYearColumnName Class Z (whether or not shares are redeemed)
1 year rr_ExpenseExampleYear01 122
3 years rr_ExpenseExampleYear03 381
5 years rr_ExpenseExampleYear05 661
10 years rr_ExpenseExampleYear10 1,459
[1] Expense ratios have been adjusted to reflect current fees.