| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC. |
| Entity Central Index Key | 0001447346 |
| 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 | T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC. |
| Entity Central Index Key | 0001447346 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| C000072749 | |
| Shareholder Report [Line Items] | |
| Fund Name | Global Multi-Sector Bond Fund |
| Class Name | Investor Class |
| Trading Symbol | PRSNX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Global Multi-Sector Bond Fund (the "fund") for the period of June 1, 2024 to November 30, 2024. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B20"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Global Multi-Sector Bond Fund - Investor Class $32 0.63% |
| Expenses Paid, Amount | $ 32 |
| Expense Ratio, Percent | 0.63% |
| AssetsNet | $ 1,785,952,000 |
| Holdings Count | Holding | 470 |
| InvestmentCompanyPortfolioTurnover | 47.20% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $1,785,952 Number of Portfolio Holdings 470 |
| Holdings [Text Block] | Foreign Government Obligations & Municipalities 39.4 % Corporate Bonds 21.9 Asset-Backed Securities 13.0 U.S. Government Agency Obligations (Excluding Mortgage-Backed) 10.9 U.S. Treasury Obligations 2.5 Bond Mutual Funds 2.4 Non-U.S. Government Mortgage-Backed Securities 1.8 Bank Loans 1.8 Short-Term and Other 6.3 |
| Largest Holdings [Text Block] | U.S. Treasury Notes 6.7 % United Kingdom Gilt 6.7 Government of Malaysia 5.1 U.S. Treasury Inflation-Indexed Notes 2.8 U.S. Treasury Bills 2.5 T. Rowe Price Institutional Floating Rate Fund - Institutional Class 2.5 Republic of Indonesia 2.5 Brazil Notas do Tesouro Nacional 2.0 Government of Singapore 1.9 Republic of Colombia 1.9 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| C000072750 | |
| Shareholder Report [Line Items] | |
| Fund Name | Global Multi-Sector Bond Fund |
| Class Name | Advisor Class |
| Trading Symbol | PRSAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Global Multi-Sector Bond Fund (the "fund") for the period of June 1, 2024 to November 30, 2024. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B43"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Global Multi-Sector Bond Fund - Advisor Class $47 0.91% |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.91% |
| AssetsNet | $ 1,785,952,000 |
| Holdings Count | Holding | 470 |
| InvestmentCompanyPortfolioTurnover | 47.20% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $1,785,952 Number of Portfolio Holdings 470 |
| Holdings [Text Block] | Foreign Government Obligations & Municipalities 39.4 % Corporate Bonds 21.9 Asset-Backed Securities 13.0 U.S. Government Agency Obligations (Excluding Mortgage-Backed) 10.9 U.S. Treasury Obligations 2.5 Bond Mutual Funds 2.4 Non-U.S. Government Mortgage-Backed Securities 1.8 Bank Loans 1.8 Short-Term and Other 6.3 |
| Largest Holdings [Text Block] | U.S. Treasury Notes 6.7 % United Kingdom Gilt 6.7 Government of Malaysia 5.1 U.S. Treasury Inflation-Indexed Notes 2.8 U.S. Treasury Bills 2.5 T. Rowe Price Institutional Floating Rate Fund - Institutional Class 2.5 Republic of Indonesia 2.5 Brazil Notas do Tesouro Nacional 2.0 Government of Singapore 1.9 Republic of Colombia 1.9 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| C000169957 | |
| Shareholder Report [Line Items] | |
| Fund Name | Global Multi-Sector Bond Fund |
| Class Name | I Class |
| Trading Symbol | PGMSX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Global Multi-Sector Bond Fund (the "fund") for the period of June 1, 2024 to November 30, 2024. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B66"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Global Multi-Sector Bond Fund - I Class $24 0.46% |
| Expenses Paid, Amount | $ 24 |
| Expense Ratio, Percent | 0.46% |
| AssetsNet | $ 1,785,952,000 |
| Holdings Count | Holding | 470 |
| InvestmentCompanyPortfolioTurnover | 47.20% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $1,785,952 Number of Portfolio Holdings 470 |
| Holdings [Text Block] | Foreign Government Obligations & Municipalities 39.4 % Corporate Bonds 21.9 Asset-Backed Securities 13.0 U.S. Government Agency Obligations (Excluding Mortgage-Backed) 10.9 U.S. Treasury Obligations 2.5 Bond Mutual Funds 2.4 Non-U.S. Government Mortgage-Backed Securities 1.8 Bank Loans 1.8 Short-Term and Other 6.3 |
| Largest Holdings [Text Block] | U.S. Treasury Notes 6.7 % United Kingdom Gilt 6.7 Government of Malaysia 5.1 U.S. Treasury Inflation-Indexed Notes 2.8 U.S. Treasury Bills 2.5 T. Rowe Price Institutional Floating Rate Fund - Institutional Class 2.5 Republic of Indonesia 2.5 Brazil Notas do Tesouro Nacional 2.0 Government of Singapore 1.9 Republic of Colombia 1.9 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| C000072749 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000072749 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000072749 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000072749 | U.S. Treasury Inflation-Indexed Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000072749 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072749 | T. Rowe Price Institutional Floating Rate Fund - Institutional Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072749 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072749 | Brazil Notas do Tesouro Nacional | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000072749 | Government of Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000072749 | Republic of Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000072749 | Foreign Government Obligations & Municipalities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.40% |
| C000072749 | Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.90% |
| C000072749 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000072749 | U.S. Government Agency Obligations (Excluding Mortgage-Backed) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000072749 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072749 | Bond Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000072749 | Non-U.S. Government Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000072749 | Bank Loans | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000072749 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000072750 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000072750 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000072750 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000072750 | U.S. Treasury Inflation-Indexed Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000072750 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072750 | T. Rowe Price Institutional Floating Rate Fund - Institutional Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072750 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072750 | Brazil Notas do Tesouro Nacional | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000072750 | Government of Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000072750 | Republic of Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000072750 | Foreign Government Obligations & Municipalities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.40% |
| C000072750 | Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.90% |
| C000072750 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000072750 | U.S. Government Agency Obligations (Excluding Mortgage-Backed) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000072750 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000072750 | Bond Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000072750 | Non-U.S. Government Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000072750 | Bank Loans | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000072750 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000169957 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000169957 | United Kingdom Gilt | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000169957 | Government of Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000169957 | U.S. Treasury Inflation-Indexed Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000169957 | U.S. Treasury Bills | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000169957 | T. Rowe Price Institutional Floating Rate Fund - Institutional Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000169957 | Republic of Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000169957 | Brazil Notas do Tesouro Nacional | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000169957 | Government of Singapore | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000169957 | Republic of Colombia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000169957 | Foreign Government Obligations & Municipalities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.40% |
| C000169957 | Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.90% |
| C000169957 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13% |
| C000169957 | U.S. Government Agency Obligations (Excluding Mortgage-Backed) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000169957 | U.S. Treasury Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000169957 | Bond Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000169957 | Non-U.S. Government Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000169957 | Bank Loans | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000169957 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
