| 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 | |
| Multi-Manager Value Strategies Fund - Institutional Class [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Multi-Manager Value Strategies Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | CZMVX | |
| 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 $ 0.68 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 36 | |
| Expense Ratio, Percent | 0.68% | [1] |
| Net Assets | $ 5,229,187,306 | |
| Holdings Count | Holding | 432 | |
| Investment Company, Portfolio Turnover | 9% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 432 Portfolio turnover for the reporting period 9% | |
| 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. Top Holdings JPMorgan Chase & Co. 3.2 % Bank of America Corp. 2.1 % Exxon Mobil Corp. 2.0 % Abbott Laboratories 2.0 % Berkshire Hathaway, Inc., Class B 2.0 % ConocoPhillips Co. 2.0 % American International Group, Inc. 1.8 % Wells Fargo & Co. 1.5 % Chevron Corp. 1.3 % UnitedHealth Group, Inc. 1.3 % Asset Categories Equity Sector Allocation | |
| Largest Holdings [Text Block] | Top Holdings JPMorgan Chase & Co. 3.2 % Bank of America Corp. 2.1 % Exxon Mobil Corp. 2.0 % Abbott Laboratories 2.0 % Berkshire Hathaway, Inc., Class B 2.0 % ConocoPhillips Co. 2.0 % American International Group, Inc. 1.8 % Wells Fargo & Co. 1.5 % Chevron Corp. 1.3 % UnitedHealth Group, Inc. 1.3 % | |
| [1]Annualized. | ||
| Shareholder Report, Holdings (Details) - Multi-Manager Value Strategies Fund - Institutional Class [Member] | Nov. 30, 2024 |
| JPMorgan Chase & Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Bank of America Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Abbott Laboratories [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Berkshire Hathaway, Inc., Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| ConocoPhillips Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| American International Group, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Wells Fargo & Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Chevron Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| UnitedHealth Group, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.80% |
| Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Unclassified Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Common Stocks [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98% |
| Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
