| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Columbia Funds Series Trust II |
| Entity Central Index Key | 0001352280 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Nov. 30, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | Columbia Funds Series Trust II | |
| Entity Central Index Key | 0001352280 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Nov. 30, 2024 | |
| Columbia Commodity Strategy Fund - Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Commodity Strategy Fund | |
| Class Name | Class A | |
| Trading Symbol | CCSAX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. | |
| Additional Information Phone Number | 1-800-345-6611 | |
| Additional Information Website | columbiathreadneedleus.com/resources/literature | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class A $ 1.10 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 54 | |
| Expense Ratio, Percent | 1.10% | [1] |
| Net Assets | $ 342,146,561 | |
| Holdings Count | Holding | 326 | |
| Investment Company, Portfolio Turnover | 113% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 326 Portfolio turnover for the reporting period 113% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Derivative Commodities Exposure Long Agriculture 27.9 % Energy 34.1 % Industrial Metals 16.2 % Livestock 6.1 % Precious Metals 23.6 % Asset Categories | |
| Columbia Commodity Strategy Fund - Institutional Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Commodity Strategy Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | CCSZX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. | |
| Additional Information Phone Number | 1-800-345-6611 | |
| Additional Information Website | columbiathreadneedleus.com/resources/literature | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional Class $ 0.85 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 42 | |
| Expense Ratio, Percent | 0.85% | [1] |
| Net Assets | $ 342,146,561 | |
| Holdings Count | Holding | 326 | |
| Investment Company, Portfolio Turnover | 113% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 326 Portfolio turnover for the reporting period 113% | |
| Holdings [Text Block] | Graphical Representation of Fund Holdings The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Derivative Commodities Exposure Long Agriculture 27.9 % Energy 34.1 % Industrial Metals 16.2 % Livestock 6.1 % Precious Metals 23.6 % Asset Categories | |
| Columbia Commodity Strategy Fund - Institutional 2 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Commodity Strategy Fund | |
| Class Name | Institutional 2 Class | |
| Trading Symbol | CADLX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. | |
| Additional Information Phone Number | 1-800-345-6611 | |
| Additional Information Website | columbiathreadneedleus.com/resources/literature | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 2 Class $ 0.76 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 38 | |
| Expense Ratio, Percent | 0.76% | [1] |
| Net Assets | $ 342,146,561 | |
| Holdings Count | Holding | 326 | |
| Investment Company, Portfolio Turnover | 113% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 326 Portfolio turnover for the reporting period 113% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets Derivatives Derivative Commodities Exposure Long Agriculture 27.9 % Energy 34.1 % Industrial Metals 16.2 % Livestock 6.1 % Precious Metals 23.6 % Asset Categories | |
| Columbia Commodity Strategy Fund - Institutional 3 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Commodity Strategy Fund | |
| Class Name | Institutional 3 Class | |
| Trading Symbol | CCFYX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. | |
| Additional Information Phone Number | 1-800-345-6611 | |
| Additional Information Website | columbiathreadneedleus.com/resources/literature | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 3 Class $ 0.71 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 35 | |
| Expense Ratio, Percent | 0.71% | [1] |
| Net Assets | $ 342,146,561 | |
| Holdings Count | Holding | 326 | |
| Investment Company, Portfolio Turnover | 113% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 326 Portfolio turnover for the reporting period 113% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Derivative Commodities Exposure Long Agriculture 27.9 % Energy 34.1 % Industrial Metals 16.2 % Livestock 6.1 % Precious Metals 23.6 % Asset Categories | |
| [1]Annualized. | ||
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| Columbia Commodity Strategy Fund - Class A | Long Agriculture [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.90% |
| Columbia Commodity Strategy Fund - Class A | Long Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34.10% |
| Columbia Commodity Strategy Fund - Class A | Long Industrial Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| Columbia Commodity Strategy Fund - Class A | Long Livestock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Columbia Commodity Strategy Fund - Class A | Long Precious Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.60% |
| Columbia Commodity Strategy Fund - Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| Columbia Commodity Strategy Fund - Class A | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.80% |
| Columbia Commodity Strategy Fund - Class A | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| Columbia Commodity Strategy Fund - Class A | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Columbia Commodity Strategy Fund - Class A | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Commodity Strategy Fund - Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Commodity Strategy Fund - Institutional Class | Long Agriculture [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.90% |
| Columbia Commodity Strategy Fund - Institutional Class | Long Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34.10% |
| Columbia Commodity Strategy Fund - Institutional Class | Long Industrial Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| Columbia Commodity Strategy Fund - Institutional Class | Long Livestock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Columbia Commodity Strategy Fund - Institutional Class | Long Precious Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.60% |
| Columbia Commodity Strategy Fund - Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| Columbia Commodity Strategy Fund - Institutional Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.80% |
| Columbia Commodity Strategy Fund - Institutional Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| Columbia Commodity Strategy Fund - Institutional Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Columbia Commodity Strategy Fund - Institutional Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Commodity Strategy Fund - Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Long Agriculture [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.90% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Long Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34.10% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Long Industrial Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Long Livestock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Long Precious Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.60% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.80% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Commodity Strategy Fund - Institutional 2 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Long Agriculture [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.90% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Long Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34.10% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Long Industrial Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Long Livestock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Long Precious Metals [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.60% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.80% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Commodity Strategy Fund - Institutional 3 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
