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Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName T. Rowe Price Media & Telecommunications Fund, Inc.
Prospectus Date rr_ProspectusDate Mar. 21, 2016
T. Rowe Price Media & Telecommunications Fund, Inc.  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading T. Rowe Price

Media & Telecommunications Fund—I Class

SUMMARY
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The fund seeks to provide long-term capital growth through the common stocks of media, technology, and telecommunications companies.
Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Fees and Expenses of the Fund’s I Class

Annual fund operating expenses
(expenses that you pay each year as a
percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate (for existing classes) was 13.5% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 13.50%
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading] rr_StrategyHeading Investments, Risks, and Performance

Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The fund will normally invest at least 80% of its net assets (including any borrowings for investment purposes) in the common stocks of companies engaged in any facet of media and telecommunications, including the Internet, publishing, movies, cable/satellite TV, telephones, cellular services, technology, and equipment. Generally, the fund invests in companies in the large- to mid-capitalization range.

Stock selection is based on fundamental, bottom-up analysis that seeks to identify companies with good appreciation prospects. The portfolio manager may use both growth and value approaches to stock selection. When assessing opportunities among growth-oriented stocks, the portfolio manager generally seeks to identify companies with capable management, attractive business niches, sound financial and accounting practices, and a demonstrated ability to increase revenues, earnings, and cash flow consistently. In looking for value stocks, the portfolio manager will seek companies whose current stock prices appear undervalued in terms of earnings, projected cash flow, or asset value per share, and with growth potential temporarily unrecognized by the market. The portfolio manager also seeks to invest in companies whose stock prices may be temporarily depressed.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria. These situations might arise when the fund’s adviser believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

The fund’s portfolio may hold stocks of either U.S. or non-U.S. companies, and may at times consist of a relatively small number of holdings. Although the fund typically invests a greater portion of its assets in U.S. stocks than international stocks, there is no limit on the fund’s investments in international securities.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The fund will normally invest at least 80% of its net assets (including any borrowings for investment purposes) in the common stocks of companies engaged in any facet of media and telecommunications, including the Internet, publishing, movies, cable/satellite TV, telephones, cellular services, technology, and equipment.
Risk [Heading] rr_RiskHeading Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Active management risk The fund is subject to the risk that the investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. If the investments selected and strategies employed by the fund fail to produce the intended results, the fund could underperform in comparison to other funds with similar objectives and investment strategies.

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a particular company or industry. In addition, the relatively small number of holdings in which the fund invests could cause it to be more volatile than comparable funds with a more diversified portfolio.

Industry risk A fund that focuses its investments in specific industries or sectors is more susceptible to developments affecting those industries and sectors than a more broadly diversified fund. Because the fund invests significantly in media and telecommunications companies, the fund may perform poorly during a downturn in those industries. Media and telecommunications companies can be adversely affected by, among other things, changes in government regulation, intense competition, dependency on patent protection, and rapid obsolescence of products and services due to product compatibility or changing consumer preferences.

International investing risk Investing in the securities of non-U.S. issuers involves special risks not typically associated with investing in U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S. These risks are heightened for the fund’s investments in emerging markets.
Risk Lose Money [Text] rr_RiskLoseMoney The fund’s share price fluctuates, which means you could lose money by investing in the fund.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The Media & Telecommunications Fund—I Class has an inception date of March 23, 2016, and does not have a full calendar year of performance history. Performance for the class will be presented after the class has been in operation for one full calendar year. As a point of comparison, however, the following bar chart and table show calendar year returns and average annual total returns for the existing Investor Class of the Media & Telecommunications Fund (“Investor Class”). Because the Media & Telecommunications Fund—I Class is expected to have lower expenses than the Investor Class, its performance, had it existed over the periods shown, would have been higher. The Investor Class and the Media & Telecommunications Fund—I Class share the same portfolio. The bar chart and table provide some indication of the risks of investing in the fund by showing changes in the performance from year to year and how the Investor Class’ average annual returns for certain periods compare with the returns of a relevant broad-based market index, as well as with the returns of other comparative indexes that have investment characteristics similar to those of the fund.

The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted for the Investor Class.

Performance information represents only past performance (before and after taxes) and does not necessarily indicate future results.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table provide some indication of the risks of investing in the fund by showing changes in the performance from year to year and how the Investor Class’ average annual returns for certain periods compare with the returns of a relevant broad-based market index, as well as with the returns of other comparative indexes that have investment characteristics similar to those of the fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Media & Telecommunications Fund—I Class has an inception date of March 23, 2016, and does not have a full calendar year of performance history. Performance for the class will be presented after the class has been in operation for one full calendar year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-800-638-8790
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress troweprice.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Performance information represents only past performance (before and after taxes) and does not necessarily indicate future results.
Bar Chart [Heading] rr_BarChartHeading Media & Telecommunications Fund
Calendar Year Returns
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
   Quarter
  Ended		   Total
 Return
Best Quarter     6/30/09 25.38%
Worst Quarter   12/31/08 -25.22%

The fund began as the New Age Media Fund, a closed-end fund, and converted to an open-end fund on July 25, 1997, operating under a different expense structure.
Bar Chart, Returns for Class Not Offered in Prospectus [Text] rr_BarChartReturnsForClassNotOfferedInProspectus As a point of comparison, however, the following bar chart and table show calendar year returns and average annual total returns for the existing Investor Class of the Media & Telecommunications Fund (“Investor Class”).
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns

Periods ended
December 31, 2015
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher In some cases, the figure shown for “returns after taxes on distributions and sale of fund shares” may be higher than the figure shown for “returns before taxes” because the calculations assume the investor received a tax deduction for any loss incurred on the sale of shares.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock In addition, the average annual total returns table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account. In some cases, the figure shown for “returns after taxes on distributions and sale of fund shares” may be higher than the figure shown for “returns before taxes” because the calculations assume the investor received a tax deduction for any loss incurred on the sale of shares.
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock Current performance information may be obtained through troweprice.com or by calling 1-800-638-8790.
T. Rowe Price Media & Telecommunications Fund, Inc. | T. Rowe Price Media & Telecommunications Fund-I Class  
Risk/Return: rr_RiskReturnAbstract  
Management fees rr_ManagementFeesOverAssets 0.64%
Distribution and service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.05%
Total annual fund operating expenses rr_ExpensesOverAssets 0.69%
1 year rr_ExpenseExampleYear01 $ 70
3 years rr_ExpenseExampleYear03 221
5 years rr_ExpenseExampleYear05 384
10 years rr_ExpenseExampleYear10 $ 859
T. Rowe Price Media & Telecommunications Fund, Inc. | T. Rowe Price Media & Telecommunications Fund, Inc.  
Risk/Return: rr_RiskReturnAbstract  
2006 rr_AnnualReturn2006 28.55%
2007 rr_AnnualReturn2007 21.83%
2008 rr_AnnualReturn2008 (46.46%)
2009 rr_AnnualReturn2009 68.52%
2010 rr_AnnualReturn2010 26.79%
2011 rr_AnnualReturn2011 (0.03%)
2012 rr_AnnualReturn2012 22.69%
2013 rr_AnnualReturn2013 40.78%
2014 rr_AnnualReturn2014 4.14%
2015 rr_AnnualReturn2015 12.00%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 25.38%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (25.22%)
1 Year rr_AverageAnnualReturnYear01 12.00%
5 Years rr_AverageAnnualReturnYear05 15.03%
10 Years rr_AverageAnnualReturnYear10 13.69%
T. Rowe Price Media & Telecommunications Fund, Inc. | Returns after taxes on distributions | T. Rowe Price Media & Telecommunications Fund, Inc.  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 11.12%
5 Years rr_AverageAnnualReturnYear05 13.22%
10 Years rr_AverageAnnualReturnYear10 12.44%
T. Rowe Price Media & Telecommunications Fund, Inc. | Returns after taxes on distributions and sale of fund shares | T. Rowe Price Media & Telecommunications Fund, Inc.  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 7.42%
5 Years rr_AverageAnnualReturnYear05 11.88%
10 Years rr_AverageAnnualReturnYear10 11.24%
T. Rowe Price Media & Telecommunications Fund, Inc. | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 1.38%
5 Years rr_AverageAnnualReturnYear05 12.57%
10 Years rr_AverageAnnualReturnYear10 7.31%
T. Rowe Price Media & Telecommunications Fund, Inc. | Lipper Telecommunication Funds Average  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.75%
5 Years rr_AverageAnnualReturnYear05 6.98%
10 Years rr_AverageAnnualReturnYear10 4.55%