485BPOS

Registration Nos. 002-93707/811-4119

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933/X/

Post-Effective Amendment No. 59/X/

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 /X/

Amendment No. 56/X/

T. ROWE PRICE HIGH YIELD FUND, INC.

Exact Name of Registrant as Specified in Charter

100 East Pratt Street, Baltimore, Maryland 21202
Address of Principal Executive Offices

410-345-2000
Registrant’s Telephone Number, Including Area Code

David Oestreicher

100 East Pratt Street, Baltimore, Maryland 21202
Name and Address of Agent for Service

It is proposed that this filing will become effective (check appropriate box):

/X/Immediately upon filing pursuant to paragraph (b)

//On (date) pursuant to paragraph (b)

//60 days after filing pursuant to paragraph (a)(1)

//On (date) pursuant to paragraph (a)(1)

//75 days after filing pursuant to paragraph (a)(2)

//On (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

//This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Page 2

EXHIBITS

Exhibit	Exhibit No.
XBRL Instance Document	EX-101.INS
XBRL Taxonomy Extension Schema Document	EX-101.SCH
XBRL Taxonomy Extension Calculation Linkbase Document	EX-101.CAL
XBRL Taxonomy Extension Definition Linkbase Document	EX-101.DEF
XBRL Taxonomy Extension Labels Linkbase Document	EX-101.LAB
XBRL Taxonomy Extension Presentation Linkbase Document	EX-101.PRE

Page 3

Signatures

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Baltimore, State of Maryland, this October 12, 2018.

T. ROWE PRICE HIGH YIELD FUND, INC.

/s/David Oestreicher

By:David Oestreicher

Director and Executive Vice President

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated:

Signature		Title	Date
/s/David Oestreicher	Director (Principal Executive Officer)		October 12, 2018
David Oestreicher	and Executive Vice President
/s/Catherine D. Mathews		Treasurer	October 12, 2018
Catherine D. Mathews		(Chief Financial Officer)
		and Vice President
*
Teresa Bryce Bazemore		Director	October 12, 2018
*
Ronald J. Daniels		Director	October 12, 2018
*
Bruce W. Duncan		Director	October 12, 2018
*
Robert J. Gerrard, Jr.		Chairman of the Board	October 12, 2018
		and Director
*
Paul F. McBride		Director	October 12, 2018
*
Cecilia E. Rouse		Director	October 12, 2018
*
John G. Schreiber		Director	October 12, 2018

Page 4

*
Mark. R. Tercek	Director	October 12, 2018
/s/Edward A. Wiese
Edward A. Wiese	Director	October 12, 2018
*/s/David Oestreicher	Executive Vice President, Director, and	October 12, 2018
David Oestreicher	Attorney-In-Fact

Page 5

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION & INCOME FUND, INC.

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

T. ROWE PRICE COMMUNICATIONS & TECHNOLOGY FUND, INC.

T. ROWE PRICE CORPORATE INCOME FUND, INC.

T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC.

T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC.

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND, INC.

T. ROWE PRICE EQUITY SERIES, INC.

T. ROWE PRICE FINANCIAL SERVICES FUND, INC.

T. ROWE PRICE FIXED INCOME SERIES, INC.

T. ROWE PRICE FLOATING RATE FUND, INC.

T. ROWE PRICE GLOBAL ALLOCATION FUND, INC.

T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC.

T. ROWE PRICE GLOBAL REAL ESTATE FUND, INC.

T. ROWE PRICE GLOBAL TECHNOLOGY FUND, INC.

T. ROWE PRICE GNMA FUND, INC.

T. ROWE PRICE GOVERNMENT MONEY FUND, INC.

T. ROWE PRICE GROWTH & INCOME FUND, INC.

T. ROWE PRICE GROWTH STOCK FUND, INC.

T. ROWE PRICE HEALTH SCIENCES FUND, INC.

T. ROWE PRICE HIGH YIELD FUND, INC.

T. ROWE PRICE INDEX TRUST, INC.

T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC.

T. ROWE PRICE INSTITUTIONAL EQUITY FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERMEDIATE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL INDEX FUND, INC.

T. ROWE PRICE INTERNATIONAL SERIES, INC.

T. ROWE PRICE LIMITED DURATION INFLATION FOCUSED BOND FUND, INC.

T. ROWE PRICE MID-CAP GROWTH FUND, INC.

T. ROWE PRICE MID-CAP VALUE FUND, INC.

T. ROWE PRICE MULTI-SECTOR ACCOUNT PORTFOLIOS, INC.

T. ROWE PRICE MULTI-STRATEGY TOTAL RETURN FUND, INC.

T. ROWE PRICE NEW AMERICA GROWTH FUND, INC.
T. ROWE PRICE NEW ERA FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

T. ROWE PRICE NEW INCOME FUND, INC.

T. ROWE PRICE PERSONAL STRATEGY FUNDS, INC.

T. ROWE PRICE QUANTITATIVE MANAGEMENT FUNDS, INC.

T. ROWE PRICE REAL ASSETS FUND, INC.

T. ROWE PRICE REAL ESTATE FUND, INC.

T. ROWE PRICE RESERVE INVESTMENT FUNDS, INC.

T. ROWE PRICE RETIREMENT FUNDS, INC.

T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC.

Page 6

T. ROWE PRICE SHORT-TERM BOND FUND, INC.

T. ROWE PRICE SMALL-CAP STOCK FUND, INC.

T. ROWE PRICE SMALL-CAP VALUE FUND, INC.

T. ROWE PRICE SPECTRUM FUND, INC.

T. ROWE PRICE STATE TAX-FREE FUNDS, INC.

T. ROWE PRICE SUMMIT FUNDS, INC.

T. ROWE PRICE SUMMIT MUNICIPAL FUNDS, INC.

T. ROWE PRICE TAX-EFFICIENT FUNDS, INC.

T. ROWE PRICE TAX-EXEMPT MONEY FUND, INC.

T. ROWE PRICE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE TAX-FREE INCOME FUND, INC.

T. ROWE PRICE TAX-FREE SHORT-INTERMEDIATE FUND, INC.

T. ROWE PRICE TOTAL RETURN FUND, INC.

T. ROWE PRICE U.S. BOND ENHANCED INDEX FUND, INC.

T. ROWE PRICE U.S. LARGE-CAP CORE FUND, INC.

T. ROWE PRICE U.S. TREASURY FUNDS, INC.

T. ROWE PRICE VALUE FUND, INC.

POWER OF ATTORNEY

RESOLVED, that the Corporation does hereby constitute and authorize Darrell N. Braman, Margery K. Neale, and David Oestreicher, and each of them individually, their true and lawful attorneys and agents to take any and all action and execute any and all instruments which said attorneys and agents may deem necessary or advisable to enable the Corporation to comply with the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, and any rules, regulations, orders or other requirements of the United States Securities and Exchange Commission thereunder, in connection with the registration under the Securities Act of 1933, as amended, of shares of the Corporation, to be offered by the Corporation, and the registration of the Corporation under the Investment Company Act of 1940, as amended, including specifically, but without limitation of the foregoing, power and authority to sign the name of the Corporation on its behalf, and to sign the names of each of such directors and officers on his or her behalf as such director or officer to any (i) Registration Statement on Form N-1A or N-14 of the Corporation filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended; (ii) Registration Statement on Form N-1A or N-14 of the Corporation under the Investment Company Act of 1940, as amended; (iii) amendment or supplement (including, but not limited to, Post-Effective Amendments adding additional series or classes of the Corporation) to said Registration Statement; and (iv) instruments or documents filed or to be filed as a part of or in connection with such Registration Statement, including Articles Supplementary, Articles of Amendment, and other instruments with respect to the Articles of Incorporation of the Corporation.

IN WITNESS WHEREOF, the above named Corporations have caused these presents to be signed and the same attested by its Assistant Secretary, each thereunto duly authorized by its Board of Directors, and each of the undersigned has hereunto set his or her hand and seal as of the day set opposite his or her name.

Page 7

ALL CORPORATIONS /s/David Oestreicher
David Oestreicher /s/Catherine D. Mathews	Executive Vice President (Principal Executive Officer) Director	July 25, 2018
Catherine D. Mathews /s/Teresa Bryce Bazemore	Treasurer (Principal Financial Officer) Vice President	July 25, 2018
Teresa Bryce Bazemore /s/Ronald J. Daniels	Director	July 25, 2018
Ronald J. Daniels /s/Bruce W. Duncan	Director	July 25, 2018
Bruce W. Duncan /s/Robert J. Gerrard, Jr.	Director	July 25, 2018
Robert J. Gerrard, Jr. /s/Paul F. McBride	Director	July 25, 2018
Paul F. McBride /s/Cecilia E. Rouse	Director	July 25, 2018
Cecilia E. Rouse /s/John G. Schreiber	Director	July 25, 2018
John G. Schreiber /s/Mark R. Tercek	Director	July 25, 2018
Mark R. Tercek	Director	July 25, 2018

(Signatures Continued)

Page 8

ROBERT W. SHARPS, Director

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION & INCOME FUND, INC.

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

T. ROWE PRICE COMMUNICATIONS & TECHNOLOGY FUND, INC.

T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC.

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND, INC.

T. ROWE PRICE EQUITY SERIES, INC.

T. ROWE PRICE FINANCIAL SERVICES FUND, INC.

T. ROWE PRICE GLOBAL ALLOCATION FUND, INC.

T. ROWE PRICE GLOBAL REAL ESTATE FUND, INC.

T. ROWE PRICE GLOBAL TECHNOLOGY FUND, INC.

T. ROWE PRICE GROWTH & INCOME FUND, INC.

T. ROWE PRICE GROWTH STOCK FUND, INC.

T. ROWE PRICE HEALTH SCIENCES FUND, INC.

T. ROWE INDEX TRUST, INC.

T. ROWE PRICE INSTITUTIONAL EQUITY FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL INDEX FUND, INC.

T. ROWE PRICE INTERNATIONAL SERIES, INC.

T. ROWE PRICE MID-CAP GROWTH FUND, INC.

T. ROWE PRICE MID-CAP VALUE FUND, INC.

T. ROWE PRICE MULTI-STRATEGY TOTAL RETURN FUND, INC.

T. ROWE PRICE NEW AMERICA GROWTH FUND, INC.

T. ROWE PRICE NEW ERA FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

T. ROWE PRICE PERSONAL STRATEGY FUNDS, INC.

T. ROWE PRICE QUANTITATIVE MANAGEMENT FUNDS, INC.

T. ROWE PRICE REAL ASSETS FUND, INC.

T. ROWE PRICE REAL ESTATE FUND, INC.

T. ROWE PRICE RETIREMENT FUNDS, INC.

T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC.

T. ROWE PRICE SMALL-CAP STOCK FUND, INC.

T. ROWE PRICE SMALL-CAP VALUE FUND, INC.

T. ROWE PRICE SPECTRUM FUND, INC.

T. ROWE PRICE TAX-EFFICIENT FUNDS, INC.

T. ROWE PRICE U.S. LARGE-CAP CORE FUND, INC.

T. ROWE PRICE VALUE FUND, INC.

/s/Robert W. Sharps

Robert W. Sharps July 25, 2018

(Signatures Continued)

Page 9

EDWARD A. WIESE, Director

T. ROWE PRICE CORPORATE INCOME FUND, INC.

T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC.

T. ROWE PRICE FIXED INCOME SERIES, INC.

T. ROWE PRICE FLOATING RATE FUND, INC.

T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC.

T. ROWE PRICE GNMA FUND, INC.

T. ROWE PRICE GOVERNMENT MONEY FUND, INC.

T. ROWE PRICE HIGH YIELD FUND, INC.

T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC.

T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC.

T. ROWE PRICE INTERMEDIATE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE LIMITED DURATION INFLATION FOCUSED BOND FUND, INC.

T. ROWE PRICE MULTI-SECTOR ACCOUNT PORTFOLIOS, INC.

T. ROWE PRICE NEW INCOME FUND, INC.

T. ROWE PRICE RESERVE INVESTMENT FUNDS, INC.

T. ROWE PRICE SHORT-TERM BOND FUND, INC.

T. ROWE PRICE STATE TAX-FREE FUNDS, INC.

T. ROWE PRICE SUMMIT FUNDS, INC.

T. ROWE PRICE SUMMIT MUNICIPAL FUNDS, INC.

T. ROWE PRICE TAX-EXEMPT MONEY FUND, INC.

T. ROWE PRICE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE TAX-FREE INCOME FUND, INC.

T. ROWE PRICE TAX-FREE SHORT-INTERMEDIATE FUND, INC.

T. ROWE PRICE TOTAL RETURN FUND, INC.

T. ROWE PRICE U.S. BOND ENHANCED INDEX FUND, INC.

T. ROWE PRICE U.S. TREASURY FUNDS, INC.

/s/Edward A. Wiese

Edward A. Wiese July 25, 2018

(Signatures Continued)

Page 10

ATTEST:

/s/Shannon Hofher Rauser

Shannon Hofher Rauser, Assistant Secretary

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Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	May 31, 2018
Registrant Name	dei_EntityRegistrantName	T. Rowe Price High Yield Fund, Inc.
Central Index Key	dei_EntityCentralIndexKey	0000754915
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Document Creation Date	dei_DocumentCreationDate	Sep. 26, 2018
Document Effective Date	dei_DocumentEffectiveDate	Oct. 01, 2018
Prospectus Date	rr_ProspectusDate	Oct. 01, 2018

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T. Rowe Price High Yield Fund, Inc.

T. Rowe Price<br/>High Yield Fund<br/><br/>Investor Class<br/><br/>I Class<br/><br/>Advisor Class<br/><br/><b>SUMMARY</b>

<b>Investment Objective</b>

The fund seeks high current income and,

secondarily, capital appreciation.

<b>Fees and Expenses</b>

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

<b>Fees and Expenses of the Fund<br/><br/>Shareholder fees (fees paid directly from your investment)</b>

Shareholder Fees - T. Rowe Price High Yield Fund, Inc. - USD ($)	Investor Class		I Class	Advisor Class
Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)	2.00%		2.00%	2.00%
Maximum account fee	$ 20	[1]

<b>Annual fund operating expenses<br/>(expenses that you pay each year as a<br/>percentage of the value of your investment)</b>

Annual Fund Operating Expenses - T. Rowe Price High Yield Fund, Inc.	Investor Class	I Class	Advisor Class
Management fees	0.59%	0.59%	0.59%
Distribution and service (12b-1) fees			0.25%
Other expenses	0.14%	0.02%	0.17%
Total annual fund operating expenses	0.73%	0.61%	1.01%

<b>Example</b>

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, 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:

Expense Example - T. Rowe Price High Yield Fund, Inc. - USD ($)	1 year	3 years	5 years	10 years
Investor Class	75	233	406	906
I Class	62	195	340	762
Advisor Class	103	322	558	1,236

<b>Portfolio Turnover</b>

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 the fund’s 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 was 62.7% of the average value of its portfolio.

<b>Investments, Risks, and Performance</b><br/><br/><b>Principal Investment Strategies</b>

The fund will normally invest at least 80% of its net assets (including any borrowings for investment purposes) in a widely diversified portfolio of high yield corporate bonds, often called “junk” bonds, as well as income-producing convertible securities and preferred stocks that are rated below investment grade or not rated by any major credit rating agency but deemed to be below investment grade by T. Rowe Price. If a holding is split rated (i.e., rated investment grade by at least one rating agency and below investment grade by another rating agency), the lower rating will be used for purposes of the fund’s 80% investment policy. High yield bonds are rated below investment grade (BB and lower, or an equivalent rating), and tend to provide high income in an effort to compensate investors for their higher risk of default, which is the failure to make required interest or principal payments. High yield bond issuers include small or relatively new companies lacking the history or capital to merit investment grade status, former blue chip companies downgraded because of financial problems, companies electing to borrow heavily to finance or avoid a takeover or buyout, and firms with heavy debt loads.

While high yield corporate bonds are typically issued with a fixed interest rate, bank loans have floating interest rates that reset periodically (typically quarterly or monthly). Bank loans represent amounts borrowed by companies or other entities from banks and other lenders. In many cases, the borrowing companies have significantly more debt than equity and the loans have been issued in connection with recapitalizations, acquisitions, leveraged buyouts, or refinancings. The loans held by the fund may be senior or subordinate obligations of the borrower. The fund may invest up to 15% of its total assets in bank loans.

The fund may purchase securities of any maturity and its weighted average maturity will vary with market conditions. In selecting investments, the fund relies extensively on T. Rowe Price credit research analysts. The fund intends to focus primarily on the higher-quality range (BB and B, or an equivalent rating) of the high yield market.

While most assets will typically be invested in U.S. dollar-denominated bonds, the fund may also invest in bonds of foreign issuers (including securities of issuers in emerging markets). The fund may invest up to 20% of its total assets in non-U.S. dollar-denominated securities and may invest without limitation in U.S. dollar-denominated bonds of foreign issuers. The fund may also use forward currency exchange contracts, credit default swaps, and index options in keeping with the fund’s objective. Forward currency exchange contracts would typically be used to protect the fund’s foreign bond holdings from adverse currency movements relative to the U.S. dollar. Credit default swaps would generally be used to protect the value of certain portfolio holdings or to manage the fund’s overall exposure to changes in credit quality. Index options would typically be used to efficiently access or adjust exposure to certain market segments and to generate additional income.

The fund may sell holdings for a variety of reasons, such as to adjust the portfolio’s average maturity, duration, or overall credit quality, to shift assets into and out of higher-yielding instruments, or to reduce its exposure to certain instruments.

<b>Principal Risks</b>

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 risks The investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies if the fund’s overall investment selections or strategies fail to produce the intended results.

Fixed income markets risks Economic and other market developments can adversely affect fixed income securities markets. At times, participants in these markets may develop concerns about the ability of certain issuers of debt instruments to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt instruments to facilitate an orderly market. Those concerns could cause increased volatility and reduced liquidity in particular securities or in the overall fixed income markets and the related derivatives markets. A lack of liquidity or other adverse credit market conditions may hamper the fund’s ability to sell the debt instruments in which it invests or to find and purchase suitable debt instruments.

Credit risks An issuer of a debt instrument could suffer an adverse change in financial condition that results in a payment default (a failure to make scheduled interest or principal payments), rating downgrade, or inability to meet a financial obligation.

Junk investing risks The fund is exposed to greater credit risk and volatility than other bond funds. High yield bond issuers are more likely to suffer an adverse change in financial condition that would result in the inability to meet a financial obligation. Accordingly, securities issued by such companies carry a higher risk of default and should be considered speculative.

Interest rate risks The prices of, and the income generated by, debt instruments held by the fund may be affected by changes in interest rates. A rise in interest rates typically causes the price of a fixed rate debt instrument to fall and its yield to rise. Conversely, a decline in interest rates typically causes the price of a fixed rate debt instrument to rise and the yield to fall. Generally, funds with longer weighted average maturities and durations carry greater interest rate risk. In recent years, the U.S. and many global markets have experienced historically low interest rates. However, interest rates have begun to rise and may continue doing so, increasing the exposure of bond investors such as the fund to the risks associated with rising interest rates.

While a rise in interest rates is the principal source of interest rate risk for bond funds, falling rates bring the possibility that a bond may be “called,” or redeemed before maturity, and that the proceeds may be reinvested in lower-yielding securities.

Liquidity risks The fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price.

Bank loan risks To the extent the fund invests in bank loans, it is exposed to additional risks beyond those normally associated with more traditional debt instruments. The fund’s ability to receive payments in connection with the loan depends primarily on the financial condition of the borrower and whether or not a loan is secured by collateral, although there is no assurance that the collateral securing a loan will be sufficient to satisfy the loan obligation. In addition, bank loans often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price. Transactions involving bank loans may have significantly longer settlement periods than more traditional investments (settlement can take longer than 7 days) and often involve borrowers whose financial condition is troubled or highly leveraged, which increases the risk that the fund may not receive its proceeds in a timely manner or that the fund may incur losses in order to pay redemption proceeds to its shareholders. In addition, loans are not registered under the federal securities laws like stocks and bonds, so investors in loans have less protection against improper practices than investors in registered securities.

Foreign investing risks The fund’s investments in foreign holdings may be adversely affected by local, political, social, and economic conditions overseas, greater volatility, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markets, and the imposition of local taxes or restrictions on gaining access to sales proceeds for foreign investors.

Convertible securities and preferred stock risks Investments in convertible securities and preferred stocks subject the fund to risks associated with both equity and fixed income securities, depending on the price of the underlying security and the conversion price. Stocks generally fluctuate in value more than bonds and tend to move in cycles, with periods of rising and falling prices. The value of a stock may decline due to general weakness in the stock market or because of factors that affect a particular company or industry. A convertible security may be called back by the issuer prior to maturity at a price that is disadvantageous to the fund. In addition, convertible securities are typically issued by smaller-capitalized companies whose stock prices are more volatile than companies that have access to more conventional means of raising capital. Preferred stock holders would be paid after corporate bondholders, but before common stockholders, in the event a company fails.

Derivatives risks The fund uses derivatives including forward currency exchange contracts, credit default swaps, and index options and is therefore exposed to additional volatility in comparison to investing directly in bonds and other debt instruments. These instruments can be illiquid and difficult to value, may involve leverage so that small changes produce disproportionate losses for the fund and, if not traded on an exchange, are subject to the risk that a counterparty to the transaction will fail to meet its obligations under the derivatives contract. The fund’s principal use of derivatives involves the risk that the value of an underlying index or security, anticipated changes in currency values, currency exchange rates, interest rates, or the creditworthiness of an issuer will not be accurately predicted, which could significantly harm the fund’s performance. Changes in regulations could significantly impact the fund’s ability to invest in specific types of derivatives, which could limit the fund’s ability to employ certain strategies that use derivatives.

<b>Performance</b>

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.

<b>High Yield Fund<br/>Calendar Year Returns</b>

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	19.53%	Worst Quarter	12/31/08	-18.45%

The fund’s return for the six months ended 6/30/18 was -1.09%.

The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the 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 an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes.

<b>Average Annual Total Returns</b><br/><br/><b>Periods ended</b><br/><b>December 31, 2017</b>

Average Annual Total Returns - T. Rowe Price High Yield Fund, Inc.	1 Year	5 Years	10 Years	Since inception		Inception date
Investor Class	7.37%	5.76%	7.32%			Dec. 31, 1984
Investor Class | Returns after taxes on distributions	4.86%	2.99%	4.48%			Dec. 31, 1984
Investor Class | Returns after taxes on distributions and sale of fund shares	4.15%	3.13%	4.45%			Dec. 31, 1984
I Class	7.50%			7.56%		Aug. 28, 2015
Advisor Class	6.98%	5.49%	7.07%			Mar. 31, 2000
Credit Suisse High Yield Index (reflects no deduction for fees, expenses, or taxes)	7.03%	5.72%	7.61%	8.26%	[1]	Aug. 28, 2015
Lipper High Yield Funds Average	6.58%	4.63%	6.42%	6.37%	[2]	Aug. 31, 2015

Updated performance information is available through troweprice.com.

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[1] Return since 8/28/15.

[2] Return since 8/31/15.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price High Yield Fund, Inc.

Prospectus Date

rr_ProspectusDate

Oct. 01, 2018

T. Rowe Price High Yield Fund, Inc.

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price<br/>High Yield Fund<br/><br/>Investor Class<br/><br/>I Class<br/><br/>Advisor Class<br/><br/><b>SUMMARY</b>

Objective [Heading]

rr_ObjectiveHeading

<b>Investment Objective</b>

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks high current income and,

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

secondarily, capital appreciation.

Expense [Heading]

rr_ExpenseHeading

<b>Fees and Expenses</b>

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. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

<b>Fees and Expenses of the Fund<br/><br/>Shareholder fees (fees paid directly from your investment)</b>

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

<b>Annual fund operating expenses<br/>(expenses that you pay each year as a<br/>percentage of the value of your investment)</b>

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

<b>Portfolio Turnover</b>

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 the fund’s 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 was 62.7% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

62.70%

Expense Example [Heading]

rr_ExpenseExampleHeading

<b>Example</b>

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, 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

<b>Investments, Risks, and Performance</b><br/><br/><b>Principal Investment Strategies</b>

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 a widely diversified portfolio of high yield corporate bonds, often called “junk” bonds, as well as income-producing convertible securities and preferred stocks that are rated below investment grade or not rated by any major credit rating agency but deemed to be below investment grade by T. Rowe Price. If a holding is split rated (i.e., rated investment grade by at least one rating agency and below investment grade by another rating agency), the lower rating will be used for purposes of the fund’s 80% investment policy. High yield bonds are rated below investment grade (BB and lower, or an equivalent rating), and tend to provide high income in an effort to compensate investors for their higher risk of default, which is the failure to make required interest or principal payments. High yield bond issuers include small or relatively new companies lacking the history or capital to merit investment grade status, former blue chip companies downgraded because of financial problems, companies electing to borrow heavily to finance or avoid a takeover or buyout, and firms with heavy debt loads.

While high yield corporate bonds are typically issued with a fixed interest rate, bank loans have floating interest rates that reset periodically (typically quarterly or monthly). Bank loans represent amounts borrowed by companies or other entities from banks and other lenders. In many cases, the borrowing companies have significantly more debt than equity and the loans have been issued in connection with recapitalizations, acquisitions, leveraged buyouts, or refinancings. The loans held by the fund may be senior or subordinate obligations of the borrower. The fund may invest up to 15% of its total assets in bank loans.

The fund may purchase securities of any maturity and its weighted average maturity will vary with market conditions. In selecting investments, the fund relies extensively on T. Rowe Price credit research analysts. The fund intends to focus primarily on the higher-quality range (BB and B, or an equivalent rating) of the high yield market.

While most assets will typically be invested in U.S. dollar-denominated bonds, the fund may also invest in bonds of foreign issuers (including securities of issuers in emerging markets). The fund may invest up to 20% of its total assets in non-U.S. dollar-denominated securities and may invest without limitation in U.S. dollar-denominated bonds of foreign issuers. The fund may also use forward currency exchange contracts, credit default swaps, and index options in keeping with the fund’s objective. Forward currency exchange contracts would typically be used to protect the fund’s foreign bond holdings from adverse currency movements relative to the U.S. dollar. Credit default swaps would generally be used to protect the value of certain portfolio holdings or to manage the fund’s overall exposure to changes in credit quality. Index options would typically be used to efficiently access or adjust exposure to certain market segments and to generate additional income.

The fund may sell holdings for a variety of reasons, such as to adjust the portfolio’s average maturity, duration, or overall credit quality, to shift assets into and out of higher-yielding instruments, or to reduce its exposure to certain instruments.

Risk [Heading]

rr_RiskHeading

<b>Principal Risks</b>

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 risks The investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies if the fund’s overall investment selections or strategies fail to produce the intended results.

Fixed income markets risks Economic and other market developments can adversely affect fixed income securities markets. At times, participants in these markets may develop concerns about the ability of certain issuers of debt instruments to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt instruments to facilitate an orderly market. Those concerns could cause increased volatility and reduced liquidity in particular securities or in the overall fixed income markets and the related derivatives markets. A lack of liquidity or other adverse credit market conditions may hamper the fund’s ability to sell the debt instruments in which it invests or to find and purchase suitable debt instruments.

Credit risks An issuer of a debt instrument could suffer an adverse change in financial condition that results in a payment default (a failure to make scheduled interest or principal payments), rating downgrade, or inability to meet a financial obligation.

Junk investing risks The fund is exposed to greater credit risk and volatility than other bond funds. High yield bond issuers are more likely to suffer an adverse change in financial condition that would result in the inability to meet a financial obligation. Accordingly, securities issued by such companies carry a higher risk of default and should be considered speculative.

Interest rate risks The prices of, and the income generated by, debt instruments held by the fund may be affected by changes in interest rates. A rise in interest rates typically causes the price of a fixed rate debt instrument to fall and its yield to rise. Conversely, a decline in interest rates typically causes the price of a fixed rate debt instrument to rise and the yield to fall. Generally, funds with longer weighted average maturities and durations carry greater interest rate risk. In recent years, the U.S. and many global markets have experienced historically low interest rates. However, interest rates have begun to rise and may continue doing so, increasing the exposure of bond investors such as the fund to the risks associated with rising interest rates.

While a rise in interest rates is the principal source of interest rate risk for bond funds, falling rates bring the possibility that a bond may be “called,” or redeemed before maturity, and that the proceeds may be reinvested in lower-yielding securities.

Liquidity risks The fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price.

Bank loan risks To the extent the fund invests in bank loans, it is exposed to additional risks beyond those normally associated with more traditional debt instruments. The fund’s ability to receive payments in connection with the loan depends primarily on the financial condition of the borrower and whether or not a loan is secured by collateral, although there is no assurance that the collateral securing a loan will be sufficient to satisfy the loan obligation. In addition, bank loans often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price. Transactions involving bank loans may have significantly longer settlement periods than more traditional investments (settlement can take longer than 7 days) and often involve borrowers whose financial condition is troubled or highly leveraged, which increases the risk that the fund may not receive its proceeds in a timely manner or that the fund may incur losses in order to pay redemption proceeds to its shareholders. In addition, loans are not registered under the federal securities laws like stocks and bonds, so investors in loans have less protection against improper practices than investors in registered securities.

Foreign investing risks The fund’s investments in foreign holdings may be adversely affected by local, political, social, and economic conditions overseas, greater volatility, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markets, and the imposition of local taxes or restrictions on gaining access to sales proceeds for foreign investors.

Convertible securities and preferred stock risks Investments in convertible securities and preferred stocks subject the fund to risks associated with both equity and fixed income securities, depending on the price of the underlying security and the conversion price. Stocks generally fluctuate in value more than bonds and tend to move in cycles, with periods of rising and falling prices. The value of a stock may decline due to general weakness in the stock market or because of factors that affect a particular company or industry. A convertible security may be called back by the issuer prior to maturity at a price that is disadvantageous to the fund. In addition, convertible securities are typically issued by smaller-capitalized companies whose stock prices are more volatile than companies that have access to more conventional means of raising capital. Preferred stock holders would be paid after corporate bondholders, but before common stockholders, in the event a company fails.

Derivatives risks The fund uses derivatives including forward currency exchange contracts, credit default swaps, and index options and is therefore exposed to additional volatility in comparison to investing directly in bonds and other debt instruments. These instruments can be illiquid and difficult to value, may involve leverage so that small changes produce disproportionate losses for the fund and, if not traded on an exchange, are subject to the risk that a counterparty to the transaction will fail to meet its obligations under the derivatives contract. The fund’s principal use of derivatives involves the risk that the value of an underlying index or security, anticipated changes in currency values, currency exchange rates, interest rates, or the creditworthiness of an issuer will not be accurately predicted, which could significantly harm the fund’s performance. Changes in regulations could significantly impact the fund’s ability to invest in specific types of derivatives, which could limit the fund’s ability to employ certain strategies that use derivatives.

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

<b>Performance</b>

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the fund. <br/><br/>The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund’s Investor Class. Returns for other share classes vary since they have different expenses. <br/><br/>The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

<b>troweprice.com</b>

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

Bar Chart [Heading]

rr_BarChartHeading

<b>High Yield Fund<br/>Calendar Year Returns</b>

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	19.53%	Worst Quarter	12/31/08	-18.45%

The fund’s return for the six months ended 6/30/18 was -1.09%.

Performance Table Heading

rr_PerformanceTableHeading

<b>Average Annual Total Returns</b><br/><br/><b>Periods ended</b><br/><b>December 31, 2017</b>

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 an IRA.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for the Investor Class and will differ for other share classes.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for each class of the fund that has been in operation for at least one full calendar year, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the 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 an IRA. After-tax returns are shown only for the Investor Class and will differ for other share classes.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com.

T. Rowe Price High Yield Fund, Inc. | Investor Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1]

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

Other expenses

rr_OtherExpensesOverAssets

0.14%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.73%

1 year

rr_ExpenseExampleYear01

$ 75

3 years

rr_ExpenseExampleYear03

233

5 years

rr_ExpenseExampleYear05

406

10 years

rr_ExpenseExampleYear10

$ 906

2008

rr_AnnualReturn2008

(24.45%)

2009

rr_AnnualReturn2009

49.14%

2010

rr_AnnualReturn2010

14.37%

2011

rr_AnnualReturn2011

3.20%

2012

rr_AnnualReturn2012

15.21%

2013

rr_AnnualReturn2013

9.07%

2014

rr_AnnualReturn2014

2.00%

2015

rr_AnnualReturn2015

(3.23%)

2016

rr_AnnualReturn2016

14.49%

2017

rr_AnnualReturn2017

7.37%

Year to Date Return, Label

rr_YearToDateReturnLabel

The fund’s return for the six months ended

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.09%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

<b>Best Quarter</b>

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

19.53%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

<b>Worst Quarter</b>

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.45%)

1 Year

rr_AverageAnnualReturnYear01

7.37%

5 Years

rr_AverageAnnualReturnYear05

5.76%

10 Years

rr_AverageAnnualReturnYear10

7.32%

Since inception

rr_AverageAnnualReturnSinceInception

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1984

T. Rowe Price High Yield Fund, Inc. | I Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

Other expenses

rr_OtherExpensesOverAssets

0.02%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.61%

1 year

rr_ExpenseExampleYear01

$ 62

3 years

rr_ExpenseExampleYear03

195

5 years

rr_ExpenseExampleYear05

340

10 years

rr_ExpenseExampleYear10

$ 762

1 Year

rr_AverageAnnualReturnYear01

7.50%

5 Years

rr_AverageAnnualReturnYear05

10 Years

rr_AverageAnnualReturnYear10

Since inception

rr_AverageAnnualReturnSinceInception

7.56%

Inception date

rr_AverageAnnualReturnInceptionDate

Aug. 28, 2015

T. Rowe Price High Yield Fund, Inc. | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.01%

1 year

rr_ExpenseExampleYear01

$ 103

3 years

rr_ExpenseExampleYear03

322

5 years

rr_ExpenseExampleYear05

558

10 years

rr_ExpenseExampleYear10

$ 1,236

1 Year

rr_AverageAnnualReturnYear01

6.98%

5 Years

rr_AverageAnnualReturnYear05

5.49%

10 Years

rr_AverageAnnualReturnYear10

7.07%

Since inception

rr_AverageAnnualReturnSinceInception

Inception date

rr_AverageAnnualReturnInceptionDate

Mar. 31, 2000

T. Rowe Price High Yield Fund, Inc. | Returns after taxes on distributions | Investor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.86%

5 Years

rr_AverageAnnualReturnYear05

2.99%

10 Years

rr_AverageAnnualReturnYear10

4.48%

Since inception

rr_AverageAnnualReturnSinceInception

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1984

T. Rowe Price High Yield Fund, Inc. | Returns after taxes on distributions and sale of fund shares | Investor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.15%

5 Years

rr_AverageAnnualReturnYear05

3.13%

10 Years

rr_AverageAnnualReturnYear10

4.45%

Since inception

rr_AverageAnnualReturnSinceInception

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1984

T. Rowe Price High Yield Fund, Inc. | Credit Suisse High Yield Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.03%

5 Years

rr_AverageAnnualReturnYear05

5.72%

10 Years

rr_AverageAnnualReturnYear10

7.61%

Since inception

rr_AverageAnnualReturnSinceInception

8.26%

^[2]

Inception date

rr_AverageAnnualReturnInceptionDate

Aug. 28, 2015

T. Rowe Price High Yield Fund, Inc. | Lipper High Yield Funds Average

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.58%

5 Years

rr_AverageAnnualReturnYear05

4.63%

10 Years

rr_AverageAnnualReturnYear10

6.42%

Since inception

rr_AverageAnnualReturnSinceInception

6.37%

^[3]

Inception date

rr_AverageAnnualReturnInceptionDate

Aug. 31, 2015

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] Return since 8/28/15.

[3] Return since 8/31/15.

XML

T. Rowe Price U.S. High Yield Fund

T. Rowe Price<br/>U.S. High Yield Fund<br/><br/>Investor Class<br/><br/>I Class<br/><br/>Advisor Class<br/><br/><b>SUMMARY</b>

<b>Investment Objective</b>

The fund seeks total return, and

secondarily, current income.

<b>Fees and Expenses</b>

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

<b>Fees and Expenses of the Fund<br/><br/>Shareholder fees (fees paid directly from your investment)</b>

Shareholder Fees - T. Rowe Price U.S. High Yield Fund - USD ($)	Investor Class		I Class	Advisor Class
Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)	2.00%		2.00%	2.00%
Maximum account fee	$ 20	[1]

<b>Annual fund operating expenses<br/>(expenses that you pay each year as a<br/>percentage of the value of your investment)</b>

Annual Fund Operating Expenses - T. Rowe Price U.S. High Yield Fund	Investor Class		I Class		Advisor Class
Management fees	0.59%		0.59%		0.59%
Distribution and service (12b-1) fees					0.25%
Other expenses	0.54%		0.41%	[1]	0.57%
Total annual fund operating expenses	1.13%		1.00%		1.41%
Fee waiver/expense reimbursement	(0.34%)	[2]	(0.36%)	[1]	(0.47%)	[3]
Total annual fund operating expenses after fee waiver/expense reimbursement	0.79%	[2]	0.64%	[1]	0.94%	[3]

<b>Example</b>

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, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. The example also assumes that an expense limitation arrangement currently in place is not renewed; therefore, the figures have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - T. Rowe Price U.S. High Yield Fund - USD ($)	1 year	3 years	5 years	10 years
Investor Class	81	325	589	1,344
I Class	65	283	517	1,192
Advisor Class	96	400	726	1,650

<b>Portfolio Turnover</b>

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 the fund’s 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 was 194.2% of the average value of its portfolio.

<b>Investments, Risks, and Performance</b><br/><br/><b>Principal Investment Strategies</b>

The fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in U.S. high yield instruments (commonly referred to as “junk” bonds), which are debt instruments that are, at the time of purchase, rated below investment grade by a credit rating agency (i.e., Baa3 by Moody’s Investors Service, Inc. or below BBB- by S&P Global Ratings or Fitch Ratings, Inc.), or, if not rated by any major credit rating agency, deemed to be below investment grade by T. Rowe Price. The fund considers U.S. high yield instruments to include noninvestment-grade bonds, bank loans, and other debt instruments issued by U.S. issuers, as well as bonds denominated in U.S. dollars that are issued by foreign banks and corporations and registered with the SEC for sale in the U.S. (such as Yankee bonds). If a holding is split rated (i.e., rated investment grade by at least one rating agency and below investment grade by another rating agency), the lower rating will be used for purposes of the fund’s 80% investment policy. The fund focuses its investments on high yield corporate bonds but may also invest in other income producing instruments including bank loans, convertible securities, and preferred stocks. In selecting bonds, the portfolio manager generally evaluates the income provided by the bond and the bond’s appreciation potential, as well as the issuer’s ability to make income and principal payments.

High yield instruments tend to provide high income in an effort to compensate investors for their higher risk of default, which is the failure to make required interest or principal payments. High yield bond issuers include small or relatively new companies lacking the history or capital to merit investment grade status, former blue chip companies downgraded because of financial problems, companies electing to borrow heavily to finance or avoid a takeover or buyout, and firms with heavy debt loads.

While high yield corporate bonds are typically issued with a fixed interest rate, bank loans have floating interest rates that reset periodically (typically quarterly or monthly). Bank loans represent amounts borrowed by companies or other entities from banks and other lenders. In many cases, the borrowing companies have significantly more debt than equity and the loans have been issued in connection with recapitalizations, acquisitions, leveraged buyouts, or refinancings. The loans held by the fund may be senior or subordinate obligations of the borrower. The fund may invest up to 15% of its total assets in bank loans.

The fund may purchase securities of any maturity, and its weighted average maturity and duration will vary with market conditions. In selecting investments, the fund relies extensively on rigorous credit research and analysis.

While most assets will typically be invested in U.S. issued instruments and U.S. dollar-denominated instruments, the fund may also invest in non-U.S. dollar-denominated bonds of foreign issuers (including securities of issuers in emerging markets). The fund may invest up to 20% of its total assets in non-U.S. dollar-denominated foreign instruments.

While most assets will typically be invested directly in bonds and other debt instruments, the fund may buy or sell credit default swaps involving a specific issuer or an index in order to adjust the fund’s overall credit quality, to protect against fluctuations in the prices of certain holdings, to gain exposure to a particular issuer or security, or to manage certain investment risks such as changes in an issuer’s creditworthiness.

The fund may sell holdings for a variety of reasons, such as to adjust the portfolio’s average maturity, duration, or overall credit quality, to shift assets into and out of higher-yielding instruments, or to reduce its exposure to certain instruments.

<b>Principal Risks</b>

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 risks The investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies if the fund’s overall investment selections or strategies fail to produce the intended results.

Fixed income markets risks Economic and other market developments can adversely affect fixed income securities markets. At times, participants in these markets may develop concerns about the ability of certain issuers of debt instruments to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt instruments to facilitate an orderly market. Those concerns could cause increased volatility and reduced liquidity in particular securities or in the overall fixed income markets and the related derivatives markets. A lack of liquidity or other adverse credit market conditions may hamper the fund’s ability to sell the debt instruments in which it invests or to find and purchase suitable debt instruments.

Interest rate risks The prices of, and the income generated by, debt instruments held by the fund may be affected by changes in interest rates. A rise in interest rates typically causes the price of a fixed rate debt instrument to fall and its yield to rise. Conversely, a decline in interest rates typically causes the price of a fixed rate debt instrument to rise and the yield to fall. Generally, funds with longer weighted average maturities and durations carry greater interest rate risk because a longer maturity or duration is typically associated with an increased sensitivity to interest rates changes. In recent years, the U.S. and many global markets have experienced historically low interest rates. However, interest rates have begun to rise and may continue doing so, increasing the exposure of bond investors such as the fund to the risks associated with rising interest rates.

While a rise in interest rates is the principal source of interest rate risk for bond funds, falling rates bring the possibility that a bond may be “called,” or redeemed before maturity, and that the proceeds may be reinvested in lower-yielding securities.

Credit risks An issuer of a debt instrument could suffer an adverse change in financial condition that results in a payment default (a failure to make scheduled interest or principal payments), rating downgrade, or inability to meet a financial obligation.

Junk investing risks The fund is exposed to greater credit risk and volatility than other bond funds. High yield bond issuers are more likely to suffer an adverse change in financial condition that would result in the inability to meet a financial obligation. Accordingly, securities issued by such companies carry a higher risk of default and should be considered speculative.

Liquidity risks The fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price.

Bank loan risks To the extent the fund invests in bank loans, it is exposed to additional risks beyond those normally associated with more traditional debt instruments. The fund’s ability to receive payments in connection with the loan depends primarily on the financial condition of the borrower and whether or not a loan is secured by collateral, although there is no assurance that the collateral securing a loan will be sufficient to satisfy the loan obligation. In addition, bank loans often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price. Transactions involving bank loans may have significantly longer settlement periods than more traditional investments (settlement can take longer than 7 days) and often involve borrowers whose financial condition is troubled or highly leveraged, which increases the risk that the fund may not receive its proceeds in a timely manner or that the fund may incur losses in order to pay redemption proceeds to its shareholders. In addition, loans are not registered under the federal securities laws like stocks and bonds, so investors in loans have less protection against improper practices than investors in registered securities.

Foreign investing risks The fund’s investments in foreign holdings may be adversely affected by local, political, social, and economic conditions overseas, greater volatility, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markets, and the imposition of local taxes or restrictions on gaining access to sales proceeds for foreign investors.

Convertible securities and preferred stock risks Investments in convertible securities and preferred stocks subject the fund to risks associated with both equity and fixed income securities, depending on the price of the underlying security and the conversion price. Stocks generally fluctuate in value more than bonds and tend to move in cycles, with periods of rising and falling prices. The value of a stock may decline due to general weakness in the stock market or because of factors that affect a particular company or industry. A convertible security may be called back by the issuer prior to maturity at a price that is disadvantageous to the fund. In addition, convertible securities are typically issued by smaller-capitalized companies whose stock prices are more volatile than companies that have access to more conventional means of raising capital. Preferred stock holders would be paid after corporate bondholders, but before common stockholders, in the event a company fails.

Derivatives risks The fund uses credit default swaps and is therefore exposed to additional volatility in comparison to investing directly in bonds and other debt instruments. These instruments can be illiquid and difficult to value, and may not properly correlate to the underlying securities or index. In addition, derivative instruments not traded on an exchange are subject to the risk that a counterparty to the transaction will fail to meet its obligations under the derivatives contract. Credit default swaps involve the risk that the creditworthiness of an issuer or likelihood of a credit event will not be accurately predicted, which could significantly harm the fund’s performance. Changes in regulations could significantly impact the fund’s ability to invest in specific types of derivatives, which could limit the fund’s ability to employ certain strategies that use derivatives.

Portfolio turnover risks The fund may actively and frequently trade its portfolio securities or other instruments to carry out its investment strategies. High portfolio turnover may adversely affect the fund’s performance and increase transaction costs, which could increase the fund’s expenses. High portfolio turnover may also result in the distribution of higher capital gains when compared to a fund with less active trading policies, which could have an adverse tax impact if the fund’s shares are held in a taxable account.

<b>Performance</b>

The following performance information provides some indication of the risks of investing in the fund by showing its performance history, which includes performance information from when the fund operated as the Henderson High Yield Opportunities Fund (the “Predecessor Fund”). On May 22, 2017, the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, shareholders of the Predecessor Fund’s Class A and Class C shares received Advisor Class shares of the fund, and shareholders of the Predecessor Fund’s Class I and Class R6 shares received I Class shares of the fund. In addition, as a result of the Reorganization, the fund’s Advisor Class adopted the Predecessor Fund’s Class A performance and accounting history, and the fund’s I Class adopted the Predecessor Fund’s Class I performance and accounting history. The fund has substantially similar investment objectives and strategies as the Predecessor Fund, and the fund is managed by the same portfolio manager as the Predecessor Fund. The performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the Advisor Class (and, prior to the Reorganization, the Predecessor Fund’s Class A). The returns in the bar chart may have been different if the expenses for the fund’s Advisor Class had been in effect during the periods prior to the Reorganization. In addition, the performance information presented prior to the Reorganization was calculated using the Predecessor Fund’s valuation methodologies, which differ in some respects from those of the fund. Returns for the fund’s Investor Class and I Class vary since they have different expenses (returns for the Predecessor Fund’s other share classes also varied since they had different expenses).

<b>U.S. High Yield Fund–Advisor Class<br/>Calendar Year Returns</b>

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	9/30/16	5.49%	Worst Quarter	9/30/15	-4.41%

The fund’s return for the six months ended 6/30/18 was -0.74%.

The following table reflects the average annual returns of the fund (including information prior to May 22, 2017, when the fund operated as the Predecessor Fund), and also compares the returns with a relevant broad-based market index. The performance information for the fund’s Advisor Class and I Class includes performance information for the Predecessor Fund’s Class A and Class I, respectively, and has not been adjusted to reflect the fees and expenses of the Advisor Class or I Class. The returns presented in the table may have been different if the expenses for each of the fund’s Advisor Class and I Class had been in effect during the periods prior to the Reorganization. The fund’s Investor Class performance information does not include performance information prior to the Reorganization since the Investor Class commenced operations in 2017 and did not assume the performance history of the Predecessor Fund. The Investor Class would have had similar performance to the fund’s Advisor Class because they share the same portfolio; however, its performance, had it existed over the periods shown, would have been higher since the Investor Class has had lower expenses than the Advisor Class for the periods presented.

In addition, the 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 an IRA. After-tax returns are shown only for the Advisor Class and will differ for other share classes.

<b>Average Annual Total Returns</b><br/><br/><b>Periods ended</b><br/><b>December 31, 2017</b>

Average Annual Total Returns - T. Rowe Price U.S. High Yield Fund		1 Year	Since inception		Inception date
Advisor Class	[1]	8.63%	6.77%		Apr. 30, 2013
Advisor Class | Returns after taxes on distributions	[1]	5.78%	3.91%		Apr. 30, 2013
Advisor Class | Returns after taxes on distributions and sale of fund shares	[1]	4.86%	3.85%		Apr. 30, 2013
Investor Class					May 19, 2017
I Class	[1]	8.99%	7.03%		Apr. 30, 2013
Bank of America Merrill Lynch US High Yield Constrained Index (reflects no deduction for fees, expenses, or taxes)	[1]	7.48%	5.17%	[2]	Apr. 30, 2013

Updated performance information is available through troweprice.com.

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[1] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to pay the operating expenses of the fund’s I Class excluding management fees; interest; expenses related to borrowings, taxes, and brokerage; and nonrecurring, extraordinary expenses; and acquired fund fees and expenses (“I Class Operating Expenses”), to the extent the I Class Operating Expenses exceed 0.05% of the class’ average daily net assets. Any expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the fund’s I Class Operating Expenses are below 0.05%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the I Class Operating Expenses (after the repayment is taken into account) to exceed both: (1) the limitation on I Class Operating Expenses in place at the time such amounts were waived; and (2) the current expense limitation on I Class Operating Expenses.

[2] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the class’ ratio of expenses to average daily net assets to exceed 0.79%. The agreement may be terminated at any time beyond September 30, 2019, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the class’ expense ratio is below 0.79%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the class’ expense ratio (after the repayment is taken into account) to exceed both: (1) the expense limitation in place at the time such amounts were waived; and (2) the class’ current expense limitation.

[3] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the class’ ratio of expenses to average daily net assets to exceed 0.94%. The agreement may be terminated at any time beyond September 30, 2019, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the class’ expense ratio is below 0.94%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the class’ expense ratio (after the repayment is taken into account) to exceed both: (1) the expense limitation in place at the time such amounts were waived; and (2) the class’ current expense limitation.

[1] Reflects the performance information from the inception date of the Predecessor Fund (April 30, 2013).

[2] Return since 4/30/13.

XML

Label

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Value

Risk/Return:

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Registrant Name

dei_EntityRegistrantName

T. Rowe Price High Yield Fund, Inc.

Prospectus Date

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Oct. 01, 2018

T. Rowe Price U.S. High Yield Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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T. Rowe Price<br/>U.S. High Yield Fund<br/><br/>Investor Class<br/><br/>I Class<br/><br/>Advisor Class<br/><br/><b>SUMMARY</b>

Objective [Heading]

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<b>Investment Objective</b>

Objective, Primary [Text Block]

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The fund seeks total return, and

Objective, Secondary [Text Block]

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secondarily, current income.

Expense [Heading]

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<b>Fees and Expenses</b>

Expense Narrative [Text Block]

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This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Shareholder Fees Caption [Text]

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<b>Fees and Expenses of the Fund<br/><br/>Shareholder fees (fees paid directly from your investment)</b>

Operating Expenses Caption [Text]

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<b>Annual fund operating expenses<br/>(expenses that you pay each year as a<br/>percentage of the value of your investment)</b>

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

September 30, 2019

Portfolio Turnover [Heading]

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<b>Portfolio Turnover</b>

Portfolio Turnover [Text Block]

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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 the fund’s 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 was 194.2% of the average value of its portfolio.

Portfolio Turnover, Rate

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194.20%

Expense Example [Heading]

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<b>Example</b>

Expense Example Narrative [Text Block]

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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, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. The example also assumes that an expense limitation arrangement currently in place is not renewed; therefore, the figures have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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<b>Investments, Risks, and Performance</b><br/><br/><b>Principal Investment Strategies</b>

Strategy Narrative [Text Block]

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The fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in U.S. high yield instruments (commonly referred to as “junk” bonds), which are debt instruments that are, at the time of purchase, rated below investment grade by a credit rating agency (i.e., Baa3 by Moody’s Investors Service, Inc. or below BBB- by S&P Global Ratings or Fitch Ratings, Inc.), or, if not rated by any major credit rating agency, deemed to be below investment grade by T. Rowe Price. The fund considers U.S. high yield instruments to include noninvestment-grade bonds, bank loans, and other debt instruments issued by U.S. issuers, as well as bonds denominated in U.S. dollars that are issued by foreign banks and corporations and registered with the SEC for sale in the U.S. (such as Yankee bonds). If a holding is split rated (i.e., rated investment grade by at least one rating agency and below investment grade by another rating agency), the lower rating will be used for purposes of the fund’s 80% investment policy. The fund focuses its investments on high yield corporate bonds but may also invest in other income producing instruments including bank loans, convertible securities, and preferred stocks. In selecting bonds, the portfolio manager generally evaluates the income provided by the bond and the bond’s appreciation potential, as well as the issuer’s ability to make income and principal payments.

High yield instruments tend to provide high income in an effort to compensate investors for their higher risk of default, which is the failure to make required interest or principal payments. High yield bond issuers include small or relatively new companies lacking the history or capital to merit investment grade status, former blue chip companies downgraded because of financial problems, companies electing to borrow heavily to finance or avoid a takeover or buyout, and firms with heavy debt loads.

While high yield corporate bonds are typically issued with a fixed interest rate, bank loans have floating interest rates that reset periodically (typically quarterly or monthly). Bank loans represent amounts borrowed by companies or other entities from banks and other lenders. In many cases, the borrowing companies have significantly more debt than equity and the loans have been issued in connection with recapitalizations, acquisitions, leveraged buyouts, or refinancings. The loans held by the fund may be senior or subordinate obligations of the borrower. The fund may invest up to 15% of its total assets in bank loans.

The fund may purchase securities of any maturity, and its weighted average maturity and duration will vary with market conditions. In selecting investments, the fund relies extensively on rigorous credit research and analysis.

While most assets will typically be invested in U.S. issued instruments and U.S. dollar-denominated instruments, the fund may also invest in non-U.S. dollar-denominated bonds of foreign issuers (including securities of issuers in emerging markets). The fund may invest up to 20% of its total assets in non-U.S. dollar-denominated foreign instruments.

While most assets will typically be invested directly in bonds and other debt instruments, the fund may buy or sell credit default swaps involving a specific issuer or an index in order to adjust the fund’s overall credit quality, to protect against fluctuations in the prices of certain holdings, to gain exposure to a particular issuer or security, or to manage certain investment risks such as changes in an issuer’s creditworthiness.

The fund may sell holdings for a variety of reasons, such as to adjust the portfolio’s average maturity, duration, or overall credit quality, to shift assets into and out of higher-yielding instruments, or to reduce its exposure to certain instruments.

Risk [Heading]

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<b>Principal Risks</b>

Risk Narrative [Text Block]

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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 risks The investment adviser’s judgments about the attractiveness, value, or potential appreciation of the fund’s investments may prove to be incorrect. The fund could underperform in comparison to other funds with a similar benchmark or similar objectives and investment strategies if the fund’s overall investment selections or strategies fail to produce the intended results.

Fixed income markets risks Economic and other market developments can adversely affect fixed income securities markets. At times, participants in these markets may develop concerns about the ability of certain issuers of debt instruments to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt instruments to facilitate an orderly market. Those concerns could cause increased volatility and reduced liquidity in particular securities or in the overall fixed income markets and the related derivatives markets. A lack of liquidity or other adverse credit market conditions may hamper the fund’s ability to sell the debt instruments in which it invests or to find and purchase suitable debt instruments.

Interest rate risks The prices of, and the income generated by, debt instruments held by the fund may be affected by changes in interest rates. A rise in interest rates typically causes the price of a fixed rate debt instrument to fall and its yield to rise. Conversely, a decline in interest rates typically causes the price of a fixed rate debt instrument to rise and the yield to fall. Generally, funds with longer weighted average maturities and durations carry greater interest rate risk because a longer maturity or duration is typically associated with an increased sensitivity to interest rates changes. In recent years, the U.S. and many global markets have experienced historically low interest rates. However, interest rates have begun to rise and may continue doing so, increasing the exposure of bond investors such as the fund to the risks associated with rising interest rates.

While a rise in interest rates is the principal source of interest rate risk for bond funds, falling rates bring the possibility that a bond may be “called,” or redeemed before maturity, and that the proceeds may be reinvested in lower-yielding securities.

Credit risks An issuer of a debt instrument could suffer an adverse change in financial condition that results in a payment default (a failure to make scheduled interest or principal payments), rating downgrade, or inability to meet a financial obligation.

Junk investing risks The fund is exposed to greater credit risk and volatility than other bond funds. High yield bond issuers are more likely to suffer an adverse change in financial condition that would result in the inability to meet a financial obligation. Accordingly, securities issued by such companies carry a higher risk of default and should be considered speculative.

Liquidity risks The fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price.

Bank loan risks To the extent the fund invests in bank loans, it is exposed to additional risks beyond those normally associated with more traditional debt instruments. The fund’s ability to receive payments in connection with the loan depends primarily on the financial condition of the borrower and whether or not a loan is secured by collateral, although there is no assurance that the collateral securing a loan will be sufficient to satisfy the loan obligation. In addition, bank loans often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price. Transactions involving bank loans may have significantly longer settlement periods than more traditional investments (settlement can take longer than 7 days) and often involve borrowers whose financial condition is troubled or highly leveraged, which increases the risk that the fund may not receive its proceeds in a timely manner or that the fund may incur losses in order to pay redemption proceeds to its shareholders. In addition, loans are not registered under the federal securities laws like stocks and bonds, so investors in loans have less protection against improper practices than investors in registered securities.

Foreign investing risks The fund’s investments in foreign holdings may be adversely affected by local, political, social, and economic conditions overseas, greater volatility, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markets, and the imposition of local taxes or restrictions on gaining access to sales proceeds for foreign investors.

Convertible securities and preferred stock risks Investments in convertible securities and preferred stocks subject the fund to risks associated with both equity and fixed income securities, depending on the price of the underlying security and the conversion price. Stocks generally fluctuate in value more than bonds and tend to move in cycles, with periods of rising and falling prices. The value of a stock may decline due to general weakness in the stock market or because of factors that affect a particular company or industry. A convertible security may be called back by the issuer prior to maturity at a price that is disadvantageous to the fund. In addition, convertible securities are typically issued by smaller-capitalized companies whose stock prices are more volatile than companies that have access to more conventional means of raising capital. Preferred stock holders would be paid after corporate bondholders, but before common stockholders, in the event a company fails.

Derivatives risks The fund uses credit default swaps and is therefore exposed to additional volatility in comparison to investing directly in bonds and other debt instruments. These instruments can be illiquid and difficult to value, and may not properly correlate to the underlying securities or index. In addition, derivative instruments not traded on an exchange are subject to the risk that a counterparty to the transaction will fail to meet its obligations under the derivatives contract. Credit default swaps involve the risk that the creditworthiness of an issuer or likelihood of a credit event will not be accurately predicted, which could significantly harm the fund’s performance. Changes in regulations could significantly impact the fund’s ability to invest in specific types of derivatives, which could limit the fund’s ability to employ certain strategies that use derivatives.

Portfolio turnover risks The fund may actively and frequently trade its portfolio securities or other instruments to carry out its investment strategies. High portfolio turnover may adversely affect the fund’s performance and increase transaction costs, which could increase the fund’s expenses. High portfolio turnover may also result in the distribution of higher capital gains when compared to a fund with less active trading policies, which could have an adverse tax impact if the fund’s shares are held in a taxable account.

Risk Lose Money [Text]

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The fund’s share price fluctuates, which means you could lose money by investing in the fund.

Bar Chart and Performance Table [Heading]

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<b>Performance</b>

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the fund by showing its performance history, which includes performance information from when the fund operated as the Henderson High Yield Opportunities Fund (the “Predecessor Fund”). On May 22, 2017, the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, shareholders of the Predecessor Fund’s Class A and Class C shares received Advisor Class shares of the fund, and shareholders of the Predecessor Fund’s Class I and Class R6 shares received I Class shares of the fund. In addition, as a result of the Reorganization, the fund’s Advisor Class adopted the Predecessor Fund’s Class A performance and accounting history, and the fund’s I Class adopted the Predecessor Fund’s Class I performance and accounting history. The fund has substantially similar investment objectives and strategies as the Predecessor Fund, and the fund is managed by the same portfolio manager as the Predecessor Fund. The performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the Advisor Class (and, prior to the Reorganization, the Predecessor Fund’s Class A). The returns in the bar chart may have been different if the expenses for the fund’s Advisor Class had been in effect during the periods prior to the Reorganization. In addition, the performance information presented prior to the Reorganization was calculated using the Predecessor Fund’s valuation methodologies, which differ in some respects from those of the fund. Returns for the fund’s Investor Class and I Class vary since they have different expenses (returns for the Predecessor Fund’s other share classes also varied since they had different expenses).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the fund by showing its performance history, which includes performance information from when the fund operated as the Henderson High Yield Opportunities Fund (the “Predecessor Fund”). <br/><br/>The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the Advisor Class (and, prior to the Reorganization, the Predecessor Fund’s Class A). The returns in the bar chart may have been different if the expenses for the fund’s Advisor Class had been in effect during the periods prior to the Reorganization. In addition, the performance information presented prior to the Reorganization was calculated using the Predecessor Fund’s valuation methodologies, which differ in some respects from those of the fund. Returns for the fund’s Investor Class and I Class vary since they have different expenses (returns for the Predecessor Fund’s other share classes also varied since they had different expenses). <br/><br/>The following table reflects the average annual returns of the fund (including information prior to May 22, 2017, when the fund operated as the Predecessor Fund), and also compares the returns with a relevant broad-based market index.

Performance Availability Website Address [Text]

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<b>troweprice.com</b>

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

Bar Chart [Heading]

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<b>U.S. High Yield Fund–Advisor Class<br/>Calendar Year Returns</b>

Bar Chart Closing [Text Block]

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	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	9/30/16	5.49%	Worst Quarter	9/30/15	-4.41%

The fund’s return for the six months ended 6/30/18 was -0.74%.

Performance Table Heading

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<b>Average Annual Total Returns</b><br/><br/><b>Periods ended</b><br/><b>December 31, 2017</b>

Performance Table Uses Highest Federal Rate

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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 an IRA.

Performance Table One Class of after Tax Shown [Text]

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After-tax returns are shown only for the Advisor Class and will differ for other share classes.

Performance Table Narrative

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The following table reflects the average annual returns of the fund (including information prior to May 22, 2017, when the fund operated as the Predecessor Fund), and also compares the returns with a relevant broad-based market index. The performance information for the fund’s Advisor Class and I Class includes performance information for the Predecessor Fund’s Class A and Class I, respectively, and has not been adjusted to reflect the fees and expenses of the Advisor Class or I Class. The returns presented in the table may have been different if the expenses for each of the fund’s Advisor Class and I Class had been in effect during the periods prior to the Reorganization. The fund’s Investor Class performance information does not include performance information prior to the Reorganization since the Investor Class commenced operations in 2017 and did not assume the performance history of the Predecessor Fund. The Investor Class would have had similar performance to the fund’s Advisor Class because they share the same portfolio; however, its performance, had it existed over the periods shown, would have been higher since the Investor Class has had lower expenses than the Advisor Class for the periods presented.

In addition, the 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 an IRA. After-tax returns are shown only for the Advisor Class and will differ for other share classes.

Performance Table Closing [Text Block]

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Updated performance information is available through troweprice.com.

T. Rowe Price U.S. High Yield Fund | Investor Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1]

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

Other expenses

rr_OtherExpensesOverAssets

0.54%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.13%

Fee waiver/expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.34%)

^[2]

Total annual fund operating expenses after fee waiver/expense reimbursement

rr_NetExpensesOverAssets

0.79%

^[2]

1 year

rr_ExpenseExampleYear01

$ 81

3 years

rr_ExpenseExampleYear03

325

5 years

rr_ExpenseExampleYear05

589

10 years

rr_ExpenseExampleYear10

$ 1,344

1 Year

rr_AverageAnnualReturnYear01

Since inception

rr_AverageAnnualReturnSinceInception

Inception date

rr_AverageAnnualReturnInceptionDate

May 19, 2017

T. Rowe Price U.S. High Yield Fund | I Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

Other expenses

rr_OtherExpensesOverAssets

0.41%

^[3]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.00%

Fee waiver/expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[3]

Total annual fund operating expenses after fee waiver/expense reimbursement

rr_NetExpensesOverAssets

0.64%

^[3]

1 year

rr_ExpenseExampleYear01

$ 65

3 years

rr_ExpenseExampleYear03

283

5 years

rr_ExpenseExampleYear05

517

10 years

rr_ExpenseExampleYear10

$ 1,192

1 Year

rr_AverageAnnualReturnYear01

8.99%

^[4]

Since inception

rr_AverageAnnualReturnSinceInception

7.03%

^[4]

Inception date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2013

^[4]

T. Rowe Price U.S. High Yield Fund | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

Maximum account fee

rr_MaximumAccountFee

Management fees

rr_ManagementFeesOverAssets

0.59%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.57%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.41%

Fee waiver/expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.47%)

^[5]

Total annual fund operating expenses after fee waiver/expense reimbursement

rr_NetExpensesOverAssets

0.94%

^[5]

1 year

rr_ExpenseExampleYear01

$ 96

3 years

rr_ExpenseExampleYear03

400

5 years

rr_ExpenseExampleYear05

726

10 years

rr_ExpenseExampleYear10

$ 1,650

2014

rr_AnnualReturn2014

3.26%

2015

rr_AnnualReturn2015

(1.87%)

2016

rr_AnnualReturn2016

16.09%

2017

rr_AnnualReturn2017

8.63%

Year to Date Return, Label

rr_YearToDateReturnLabel

The fund’s return for the six months ended

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Jun. 30, 2018

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(0.74%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

<b>Best Quarter</b>

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2016

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.49%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

<b>Worst Quarter</b>

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.41%)

1 Year

rr_AverageAnnualReturnYear01

8.63%

^[4]

Since inception

rr_AverageAnnualReturnSinceInception

6.77%

^[4]

Inception date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2013

^[4]

T. Rowe Price U.S. High Yield Fund | Returns after taxes on distributions | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.78%

^[4]

Since inception

rr_AverageAnnualReturnSinceInception

3.91%

^[4]

Inception date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2013

^[4]

T. Rowe Price U.S. High Yield Fund | Returns after taxes on distributions and sale of fund shares | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.86%

^[4]

Since inception

rr_AverageAnnualReturnSinceInception

3.85%

^[4]

Inception date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2013

^[4]

T. Rowe Price U.S. High Yield Fund | Bank of America Merrill Lynch US High Yield Constrained Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.48%

^[4]

Since inception

rr_AverageAnnualReturnSinceInception

5.17%

^[4],[6]

Inception date

rr_AverageAnnualReturnInceptionDate

Apr. 30, 2013

^[4]

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the class’ ratio of expenses to average daily net assets to exceed 0.79%. The agreement may be terminated at any time beyond September 30, 2019, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the class’ expense ratio is below 0.79%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the class’ expense ratio (after the repayment is taken into account) to exceed both: (1) the expense limitation in place at the time such amounts were waived; and (2) the class’ current expense limitation.

[3] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to pay the operating expenses of the fund’s I Class excluding management fees; interest; expenses related to borrowings, taxes, and brokerage; and nonrecurring, extraordinary expenses; and acquired fund fees and expenses (“I Class Operating Expenses”), to the extent the I Class Operating Expenses exceed 0.05% of the class’ average daily net assets. Any expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the fund’s I Class Operating Expenses are below 0.05%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the I Class Operating Expenses (after the repayment is taken into account) to exceed both: (1) the limitation on I Class Operating Expenses in place at the time such amounts were waived; and (2) the current expense limitation on I Class Operating Expenses.

[4] Reflects the performance information from the inception date of the Predecessor Fund (April 30, 2013).

[5] T. Rowe Price Associates, Inc., has agreed (through September 30, 2019) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the class’ ratio of expenses to average daily net assets to exceed 0.94%. The agreement may be terminated at any time beyond September 30, 2019, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement are subject to reimbursement to T. Rowe Price Associates, Inc., by the fund whenever the class’ expense ratio is below 0.94%. However, no reimbursement will be made more than three years from the date such amounts were initially waived or reimbursed. The fund may only make repayments to T. Rowe Price Associates, Inc., if such repayment does not cause the class’ expense ratio (after the repayment is taken into account) to exceed both: (1) the expense limitation in place at the time such amounts were waived; and (2) the class’ current expense limitation.

[6] Return since 4/30/13.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	T. Rowe Price High Yield Fund, Inc.
Prospectus Date	rr_ProspectusDate	Oct. 01, 2018
Document Creation Date	dei_DocumentCreationDate	Sep. 26, 2018