| 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 CORPORATE INCOME FUND, INC. |
| Entity Central Index Key | 0000949820 |
| 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 CORPORATE INCOME FUND, INC. |
| Entity Central Index Key | 0000949820 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| C000005519 | |
| Shareholder Report [Line Items] | |
| Fund Name | Corporate Income Fund |
| Class Name | Investor Class |
| Trading Symbol | PRPIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Corporate Income 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 Corporate Income Fund - Investor Class $30 0.59% |
| Expenses Paid, Amount | $ 30 |
| Expense Ratio, Percent | 0.59% |
| AssetsNet | $ 548,050,000 |
| Holdings Count | Holding | 387 |
| InvestmentCompanyPortfolioTurnover | 36% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $548,050 Number of Portfolio Holdings 387 |
| Holdings [Text Block] | AAA Rated 1.1 % AA Rated 2.6 A Rated 30.0 BBB Rated 53.9 BB Rated and Below 7.1 Not Rated 2.0 U.S. Treasury Securities 1.7 Reserves 1.6 |
| Largest Holdings [Text Block] | Citigroup 2.2 % SBA Tower Trust 2.0 CVS Health 1.7 U.S. Treasury Bonds 1.6 AbbVie 1.4 Bank of America 1.3 Health Care Service A Mutual Legal Reserve 1.3 Rogers Communications 1.3 Goldman Sachs Group 1.3 ONEOK 1.2 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| C000166313 | |
| Shareholder Report [Line Items] | |
| Fund Name | Corporate Income Fund |
| Class Name | I Class |
| Trading Symbol | TICCX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Corporate Income 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 Corporate Income Fund - I Class $21 0.40% |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.40% |
| AssetsNet | $ 548,050,000 |
| Holdings Count | Holding | 387 |
| InvestmentCompanyPortfolioTurnover | 36% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $548,050 Number of Portfolio Holdings 387 |
| Holdings [Text Block] | AAA Rated 1.1 % AA Rated 2.6 A Rated 30.0 BBB Rated 53.9 BB Rated and Below 7.1 Not Rated 2.0 U.S. Treasury Securities 1.7 Reserves 1.6 |
| Largest Holdings [Text Block] | Citigroup 2.2 % SBA Tower Trust 2.0 CVS Health 1.7 U.S. Treasury Bonds 1.6 AbbVie 1.4 Bank of America 1.3 Health Care Service A Mutual Legal Reserve 1.3 Rogers Communications 1.3 Goldman Sachs Group 1.3 ONEOK 1.2 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| C000225817 | |
| Shareholder Report [Line Items] | |
| Fund Name | Corporate Income Fund |
| Class Name | Z Class |
| Trading Symbol | TRZCX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Corporate Income 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 Corporate Income Fund - Z Class $0 0.00% |
| Expenses Paid, Amount | $ 0 |
| Expense Ratio, Percent | 0% |
| AssetsNet | $ 548,050,000 |
| Holdings Count | Holding | 387 |
| InvestmentCompanyPortfolioTurnover | 36% |
| Additional Fund Statistics Significance or Limits [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $548,050 Number of Portfolio Holdings 387 |
| Holdings [Text Block] | AAA Rated 1.1 % AA Rated 2.6 A Rated 30.0 BBB Rated 53.9 BB Rated and Below 7.1 Not Rated 2.0 U.S. Treasury Securities 1.7 Reserves 1.6 |
| Largest Holdings [Text Block] | Citigroup 2.2 % SBA Tower Trust 2.0 CVS Health 1.7 U.S. Treasury Bonds 1.6 AbbVie 1.4 Bank of America 1.3 Health Care Service A Mutual Legal Reserve 1.3 Rogers Communications 1.3 Goldman Sachs Group 1.3 ONEOK 1.2 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| C000005519 | Citigroup | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000005519 | SBA Tower Trust | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000005519 | CVS Health | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000005519 | U.S. Treasury Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000005519 | AbbVie | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000005519 | Bank of America | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000005519 | Health Care Service A Mutual Legal Reserve | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000005519 | Rogers Communications | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000005519 | Goldman Sachs Group | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000005519 | ONEOK | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000005519 | AAA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000005519 | AA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000005519 | A Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30% |
| C000005519 | BBB Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.90% |
| C000005519 | BB Rated and Below | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000005519 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000005519 | U.S. Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000005519 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000166313 | Citigroup | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000166313 | SBA Tower Trust | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000166313 | CVS Health | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000166313 | U.S. Treasury Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000166313 | AbbVie | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000166313 | Bank of America | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000166313 | Health Care Service A Mutual Legal Reserve | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000166313 | Rogers Communications | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000166313 | Goldman Sachs Group | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000166313 | ONEOK | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000166313 | AAA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000166313 | AA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000166313 | A Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30% |
| C000166313 | BBB Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.90% |
| C000166313 | BB Rated and Below | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000166313 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000166313 | U.S. Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000166313 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000225817 | Citigroup | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000225817 | SBA Tower Trust | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000225817 | CVS Health | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000225817 | U.S. Treasury Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000225817 | AbbVie | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000225817 | Bank of America | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000225817 | Health Care Service A Mutual Legal Reserve | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000225817 | Rogers Communications | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000225817 | Goldman Sachs Group | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000225817 | ONEOK | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000225817 | AAA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000225817 | AA Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000225817 | A Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30% |
| C000225817 | BBB Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.90% |
| C000225817 | BB Rated and Below | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000225817 | Not Rated | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000225817 | U.S. Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000225817 | Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
