| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE EQUITY SERIES, INC. |
| Entity Central Index Key | 0000918294 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE EQUITY SERIES, INC. |
| Entity Central Index Key | 0000918294 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000005441 | |
| Shareholder Report [Line Items] | |
| Fund Name | All-Cap Opportunities Portfolio |
| Trading Symbol | QAOSWX |
| Shareholder Report Annual or Semi-Annual | 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-B18"><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 year? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment All-Cap Opportunities Portfolio $90 0.80% |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What drove fund performance during the past 12 months? U.S. stocks advanced during the period buoyed by generally favorable corporate earnings and continuing interest in companies expected to benefit from artificial intelligence developments. Although inflation remained above the Federal Reserve’s long-term 2% target, the central bank shifted its focus toward the moderating labor market in the second half of the year and began reducing interest rates in mid-September. The following contributed most to the portfolio’s performance during the reporting period, relative to the Russell 3000 Index: stock selection in communication services, with particular strength in the entertainment and interactive media and services industries; security choices in information technology, with the most significant returns in the semiconductors and semiconductor equipment industry; and stock choices in consumer discretionary. The following detracted most from portfolio performance during the reporting period, relative to the benchmark: stock selection in financials, with the capital markets industry and banks industry lagging, and security choices in consumer staples, with the consumer staples distribution and retail industry and the beverages industry weighing on returns. We seek to provide long-term growth of capital by minimizing factor bets and relying on thoughtful stock selection across a wide range of sectors and industries. We utilize a “Four Pillars” investment framework—quality, expectations, better or worse, and valuation—to create a portfolio from the bottom up, spanning all market capitalizations and investment styles. |
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance is not a good predictor of the fund’s future performance. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years All-Cap Opportunities Portfolio 25.16 % 17.18 % 16.13 % Russell 3000 Index (Regulatory/Strategy Benchmark) 23.81 13.86 12.55 The preceding line graph shows the value of a hypothetical $10,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The fund’s performance information included in the line graph and table above is compared with a regulatory required index that represents an overall securities market (Regulatory Benchmark). In addition, the line graph and table may also include one or more indexes that more closely aligns to the fund's investment strategy (Strategy Benchmark(s)). Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. Market index returns do not include expenses, which are deducted from fund returns. The fund's total return figures reflect the reinvestment of dividends and capital gains, if any.Neither the fund’s returns nor the index returns reflect the deduction of taxes that a shareholder would pay on fund distributions or redemptions of fund shares. The fund’s past performance is not a good predictor of the fund’s future performance. |
| No Deduction of Taxes [Text Block] | Neither the fund’s returns nor the index returns reflect the deduction of taxes that a shareholder would pay on fund distributions or redemptions of fund shares. |
| Performance Table Market Index Changed [Text Block] | Due to new SEC Rules on shareholder reporting the fund adopted a new broad-based securities market index, referred to as the Regulatory Benchmark. |
| Updated Performance Information Location [Text Block] | Updated performance information can be found at www.troweprice.com. |
| Distribution of Capital [Text Block] | The fund's total return figures reflect the reinvestment of dividends and capital gains, if any. |
| AssetsNet | $ 540,878,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 3,453,000 |
| InvestmentCompanyPortfolioTurnover | 96.50% |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $540,878 Number of Portfolio Holdings 113 |
| Holdings [Text Block] | Sector Information Technology 27.8 % Consumer Discretionary 14.6 Financials 13.5 Communication Services 12.1 Health Care 12.1 Industrials & Business Services 10.6 Energy 2.0 Utilities 2.0 Consumer Staples 1.8 Other 3.5 |
| Largest Holdings [Text Block] | Top Ten Holdings Microsoft 7.1 % Apple 6.6 NVIDIA 5.9 Amazon.com 4.4 Meta Platforms 3.7 Alphabet 3.2 Visa 2.6 Eli Lilly 2.4 Tesla 2.2 Netflix 1.9 |
| Updated Prospectus Web Address | www.troweprice.com/paperless |
| Shareholder Report, Line Graph (Details) - USD ($) | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 |
| Russell 3000 Index | |||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 32,604 | $ 31,767 | $ 29,904 | $ 28,973 | $ 26,334 | $ 23,497 | $ 24,288 | $ 22,408 | $ 20,907 | $ 19,506 | $ 20,418 | $ 24,512 | $ 25,877 | $ 23,681 | $ 23,705 | $ 21,900 | $ 20,593 | $ 17,957 | $ 16,443 | $ 13,475 | $ 17,035 | $ 15,614 | $ 15,435 | $ 14,828 | $ 13,002 | $ 15,172 | $ 14,163 | $ 13,633 | $ 13,721 | $ 12,903 | $ 12,339 | $ 11,978 | $ 11,327 | $ 10,870 | $ 10,412 | $ 10,145 | $ 10,048 | $ 9,455 | $ 10,194 | $ 10,180 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended |
| Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | |
| Without Sales Load [Member] | C000005441 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 25.16% | 17.18% | 16.13% |
| Russell 3000 Index | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% |
| Shareholder Report, Holdings (Details) - C000005441 | Dec. 31, 2024 |
| Microsoft | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| Apple | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| NVIDIA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| Amazon.com | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Meta Platforms | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Alphabet | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Visa | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Eli Lilly | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Tesla | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Netflix | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Information Technology | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.80% |
| Consumer Discretionary | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| Financials | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| Communication Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Health Care | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Industrials & Business Services | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| Energy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Utilities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Consumer Staples | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Other Holdings Grouping | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
