Shareholder Report |
6 Months Ended | |||||||||
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Jul. 31, 2026
USD ($)
Holding
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| Shareholder Report [Line Items] | ||||||||||
| Document Type | N-CSRS | |||||||||
| Amendment Flag | false | |||||||||
| Registrant Name | DEUTSCHE DWS PORTFOLIO TRUST | |||||||||
| Entity Central Index Key | 0000088063 | |||||||||
| Entity Investment Company Type | N-1A | |||||||||
| Document Period End Date | Jul. 31, 2026 | |||||||||
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report | |||||||||
| C000016770 | ||||||||||
| Shareholder Report [Line Items] | ||||||||||
| Fund Name | DWS Total Return Bond Fund | |||||||||
| Class Name | Class A | |||||||||
| Trading Symbol | SZIAX | |||||||||
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about DWS Total Return Bond Fund (the "Fund") for the period February 1, 2026 to July 31, 2026. | |||||||||
| Additional Information [Text Block] | You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337. | |||||||||
| Additional Information Phone Number | (800) 728-3337 | |||||||||
| Additional Information Website | <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 14.6667px; font-weight: 300; grid-area: auto; line-height: 17.6px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">dws.com/mutualreports</span> | |||||||||
| Expenses [Text Block] | ||||||||||
| Expenses Paid, Amount | $ 39 | |||||||||
| Expense Ratio, Percent | 0.80% | [1] | ||||||||
| AssetsNet | $ 213,864,748 | |||||||||
| Holdings Count | Holding | 325 | |||||||||
| Advisory Fees Paid, Amount | $ 338,683 | |||||||||
| InvestmentCompanyPortfolioTurnover | 85.00% | |||||||||
| Additional Fund Statistics [Text Block] | ||||||||||
| Holdings [Text Block] | ||||||||||
| Credit Ratings Selection [Text Block] | The quality ratings represent the highest of Moody’s Investors Service, Inc. (“Moody’s”), Fitch Ratings, Inc. (“Fitch”) or S&P Global Ratings (“S&P”) credit ratings. The ratings of Moody’s, Fitch and S&P represent their opinions as to the quality of the securities they rate. Credit quality measures a bond issuer’s ability to repay interest and principal in a timely manner. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. | |||||||||
| C000016773 | ||||||||||
| Shareholder Report [Line Items] | ||||||||||
| Fund Name | DWS Total Return Bond Fund | |||||||||
| Class Name | Class C | |||||||||
| Trading Symbol | SZICX | |||||||||
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about DWS Total Return Bond Fund (the "Fund") for the period February 1, 2026 to July 31, 2026. | |||||||||
| Additional Information [Text Block] | You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337. | |||||||||
| Additional Information Phone Number | (800) 728-3337 | |||||||||
| Additional Information Website | <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 14.6667px; font-weight: 300; grid-area: auto; line-height: 17.6px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">dws.com/mutualreports</span> | |||||||||
| Expenses [Text Block] | ||||||||||
| Expenses Paid, Amount | $ 76 | |||||||||
| Expense Ratio, Percent | 1.55% | [2] | ||||||||
| AssetsNet | $ 213,864,748 | |||||||||
| Holdings Count | Holding | 325 | |||||||||
| Advisory Fees Paid, Amount | $ 338,683 | |||||||||
| InvestmentCompanyPortfolioTurnover | 85.00% | |||||||||
| Additional Fund Statistics [Text Block] | ||||||||||
| Holdings [Text Block] | ||||||||||
| Credit Ratings Selection [Text Block] | The quality ratings represent the highest of Moody’s Investors Service, Inc. (“Moody’s”), Fitch Ratings, Inc. (“Fitch”) or S&P Global Ratings (“S&P”) credit ratings. The ratings of Moody’s, Fitch and S&P represent their opinions as to the quality of the securities they rate. Credit quality measures a bond issuer’s ability to repay interest and principal in a timely manner. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. | |||||||||
| C000016774 | ||||||||||
| Shareholder Report [Line Items] | ||||||||||
| Fund Name | DWS Total Return Bond Fund | |||||||||
| Class Name | Class S | |||||||||
| Trading Symbol | SCSBX | |||||||||
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about DWS Total Return Bond Fund (the "Fund") for the period February 1, 2026 to July 31, 2026. | |||||||||
| Additional Information [Text Block] | You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337. | |||||||||
| Additional Information Phone Number | (800) 728-3337 | |||||||||
| Additional Information Website | <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 14.6667px; font-weight: 300; grid-area: auto; line-height: 17.6px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">dws.com/mutualreports</span> | |||||||||
| Expenses [Text Block] | ||||||||||
| Expenses Paid, Amount | $ 27 | |||||||||
| Expense Ratio, Percent | 0.55% | [3] | ||||||||
| AssetsNet | $ 213,864,748 | |||||||||
| Holdings Count | Holding | 325 | |||||||||
| Advisory Fees Paid, Amount | $ 338,683 | |||||||||
| InvestmentCompanyPortfolioTurnover | 85.00% | |||||||||
| Additional Fund Statistics [Text Block] | ||||||||||
| Holdings [Text Block] | ||||||||||
| Credit Ratings Selection [Text Block] | The quality ratings represent the highest of Moody’s Investors Service, Inc. (“Moody’s”), Fitch Ratings, Inc. (“Fitch”) or S&P Global Ratings (“S&P”) credit ratings. The ratings of Moody’s, Fitch and S&P represent their opinions as to the quality of the securities they rate. Credit quality measures a bond issuer’s ability to repay interest and principal in a timely manner. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. | |||||||||
| C000016775 | ||||||||||
| Shareholder Report [Line Items] | ||||||||||
| Fund Name | DWS Total Return Bond Fund | |||||||||
| Class Name | Institutional Class | |||||||||
| Trading Symbol | SZIIX | |||||||||
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about DWS Total Return Bond Fund (the "Fund") for the period February 1, 2026 to July 31, 2026. | |||||||||
| Additional Information [Text Block] | You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337. | |||||||||
| Additional Information Phone Number | (800) 728-3337 | |||||||||
| Additional Information Website | <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 14.6667px; font-weight: 300; grid-area: auto; line-height: 17.6px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">dws.com/mutualreports</span> | |||||||||
| Expenses [Text Block] | ||||||||||
| Expenses Paid, Amount | $ 27 | |||||||||
| Expense Ratio, Percent | 0.55% | [4] | ||||||||
| AssetsNet | $ 213,864,748 | |||||||||
| Holdings Count | Holding | 325 | |||||||||
| Advisory Fees Paid, Amount | $ 338,683 | |||||||||
| InvestmentCompanyPortfolioTurnover | 85.00% | |||||||||
| Additional Fund Statistics [Text Block] | ||||||||||
| Holdings [Text Block] | ||||||||||
| Credit Ratings Selection [Text Block] | The quality ratings represent the highest of Moody’s Investors Service, Inc. (“Moody’s”), Fitch Ratings, Inc. (“Fitch”) or S&P Global Ratings (“S&P”) credit ratings. The ratings of Moody’s, Fitch and S&P represent their opinions as to the quality of the securities they rate. Credit quality measures a bond issuer’s ability to repay interest and principal in a timely manner. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. | |||||||||
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