Shareholder Report |
6 Months Ended |
|---|---|
|
Apr. 30, 2025
USD ($)
Holding
| |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | CREDIT SUISSE OPPORTUNITY FUNDS |
| Entity Central Index Key | 0000946110 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Apr. 30, 2025 |
| C000029053 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Floating Rate High Income Fund |
| Class Name | Class A |
| Trading Symbol | CHIAX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Floating Rate High Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CHIAX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CHIAX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.95% |
| AssetsNet | $ 1,795,245,262 |
| Holdings Count | Holding | 491 |
| InvestmentCompanyPortfolioTurnover | 23.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |
| C000029055 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Floating Rate High Income Fund |
| Class Name | Class C |
| Trading Symbol | CHICX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Floating Rate High Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CHICX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CHICX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 85 |
| Expense Ratio, Percent | 1.70% |
| AssetsNet | $ 1,795,245,262 |
| Holdings Count | Holding | 491 |
| InvestmentCompanyPortfolioTurnover | 23.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |
| C000029052 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Floating Rate High Income Fund |
| Class Name | Class I |
| Trading Symbol | CSHIX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Floating Rate High Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CSHIX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CSHIX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.70% |
| AssetsNet | $ 1,795,245,262 |
| Holdings Count | Holding | 491 |
| InvestmentCompanyPortfolioTurnover | 23.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |
| C000118186 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Strategic Income Fund |
| Class Name | Class A |
| Trading Symbol | CSOAX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Strategic Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CSOAX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CSOAX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 52 |
| Expense Ratio, Percent | 1.04% |
| AssetsNet | $ 1,012,078,738 |
| Holdings Count | Holding | 602 |
| InvestmentCompanyPortfolioTurnover | 28.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |
| C000120097 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Strategic Income Fund |
| Class Name | Class C |
| Trading Symbol | CSOCX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Strategic Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CSOCX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CSOCX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 89 |
| Expense Ratio, Percent | 1.79% |
| AssetsNet | $ 1,012,078,738 |
| Holdings Count | Holding | 602 |
| InvestmentCompanyPortfolioTurnover | 28.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |
| C000120098 | |
| Shareholder Report [Line Items] | |
| Fund Name | Credit Suisse Strategic Income Fund |
| Class Name | Class I |
| Trading Symbol | CSOIX |
| Annual or Semi-Annual Statement [Text Block] | This Semi-Annual shareholder report contains important information about Credit Suisse Strategic Income Fund (the "Fund") for the period of November 1, 2024 to April 30, 2025. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at https://us-fund.credit-suisse.com/CSOIX. You can also request this information by contacting us at 877-870-2874. |
| Additional Information Phone Number | 877-870-2874 |
| Additional Information Website | https://us-fund.credit-suisse.com/CSOIX |
| Expenses [Text Block] | What were the Fund costs for the last six months?(based on a hypothetical $10,000 investment) |
| Expenses Paid, Amount | $ 39 |
| Expense Ratio, Percent | 0.79% |
| AssetsNet | $ 1,012,078,738 |
| Holdings Count | Holding | 602 |
| InvestmentCompanyPortfolioTurnover | 28.00% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics |
| Holdings [Text Block] | Portfolio Breakdown (% of Total Investments) |
| Credit Quality Explanation [Text Block] | Credit Quality is based on ratings provided by the S&P Global Ratings Division of S&P Global Inc. ("S&P"). S&P is a main provider of ratings for credit asset classes and is widely used amongst industry participants. The NR category consists of securities that have not been rated by S&P. |
| Largest Holdings [Text Block] | Credit Quality Breakdown*(% of Total Investments)Derivatives are not reflected in amounts reported above. |
| Updated Prospectus Phone Number | 877-870-2874 |