485BPOS

Registration Nos. 002-99122/811-4358

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 /X/

Post-Effective Amendment No. 42 /X/

and/or

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

Amendment No. 40 /X/

T. ROWE PRICE NEW AMERICA GROWTH FUND

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

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 May 12, 2014.

T. ROWE PRICE NEW AMERICA GROWTH FUND

/s/Edward C. Bernard

By:Edward C. Bernard

Chairman of the Board

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/Edward C. Bernard	Chairman of the Board	May 12, 2014
Edward C. Bernard	(Chief Executive Officer)
/s/Gregory K. Hinkle	Treasurer (Chief	May 12, 2014
Gregory K. Hinkle	Financial Officer)
*	Trustee	May 12, 2014
William R. Brody
*	Trustee	May 12, 2014
Anthony W. Deering
*	Trustee	May 12, 2014
Donald W. Dick, Jr.
*	Trustee	May 12, 2014
Bruce W. Duncan
*	Trustee	May 12, 2014
Robert J. Gerrard, Jr.
*	Trustee	May 12, 2014
Karen N. Horn
*	Trustee	May 12, 2014
Paul F. McBride
/s/Brian C. Rogers	Trustee	May 12, 2014
Brian C. Rogers

Page 4

*	Trustee	May 12, 2014
Cecilia E. Rouse
*	Trustee	May 12, 2014
John G. Schreiber
*	Trustee	May 12, 2014
Mark. R. Tercek
*/s/David Oestreicher	Vice President and	May 12, 2014
David Oestreicher	Attorney-In-Fact

Page 5

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CALIFORNIA TAX-FREE INCOME TRUST

T. ROWE PRICE CAPITAL APPRECIATION FUND

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

T. ROWE PRICE CORPORATE INCOME FUND, INC.

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

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

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND

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 REAL ESTATE FUND, INC.

T. ROWE PRICE GLOBAL TECHNOLOGY FUND, INC.

T. ROWE PRICE GNMA FUND

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 FOCUSED BOND FUND, 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 INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL INDEX FUND, INC.

T. ROWE PRICE INTERNATIONAL SERIES, INC.

T. ROWE PRICE MEDIA & TELECOMMUNICATIONS 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 NEW AMERICA GROWTH FUND
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 PRIME RESERVE FUND, 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.

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.

Page 6

T. ROWE PRICE STATE TAX-FREE INCOME TRUST

T. ROWE PRICE STRATEGIC INCOME FUND, 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 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 Edward C. Bernard, 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/Trust 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/Trust, to be offered by the Corporation/Trust, and the registration of the Corporation/Trust 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/Trust on its behalf, and to sign the names of each of such directors/trustees and officers on his behalf as such director/trustee or officer to any (i) Registration Statement on Form N-1A or N-14 of the Corporation/Trust 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/Trust 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/ Trust) 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 or Master Trust Agreement of the Corporation/Trust.

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

Page 7

ALL CORPORATIONS/TRUSTS /s/Edward C. Bernard
Edward C. Bernard /s/Gregory K. Hinkle	Chairman of the Board (Principal Executive Officer) Director/Trustee	October 22, 2013
Gregory K. Hinkle /s/William R. Brody	Treasurer (Principal Financial Officer)	October 22, 2013
William R. Brody /s/Anthony W. Deering	Director/Trustee	October 22, 2013
Anthony W. Deering /s/Donald W. Dick, Jr.	Director/Trustee	October 22, 2013
Donald W. Dick, Jr. /s/Bruce W. Duncan	Director/Trustee	October 22, 2013
Bruce W. Duncan /s/Robert J. Gerrard, Jr.	Director/Trustee	October 22, 2013
Robert J. Gerrard, Jr. /s/Karen N. Horn	Director/Trustee	October 22, 2013
Karen N. Horn	Director/Trustee	October 22, 2013

(Signatures Continued)

Page 8

ALL CORPORATIONS/TRUSTS /s/Paul F. McBride
Paul F. McBride /s/Cecilia E. Rouse	Director/Trustee	October 22, 2013
Cecilia E. Rouse /s/John G. Schreiber	Director/Trustee	October 22, 2013
John G. Schreiber /s/Mark R. Tercek	Director/Trustee	October 22, 2013
Mark R. Tercek	Director/Trustee	October 22, 2013

(Signatures Continued)

Page 9

MICHAEL C. GITLIN, Director/Trustee

T. ROWE PRICE CALIFORNIA TAX-FREE INCOME TRUST

T. ROWE PRICE CORPORATE INCOME FUND, INC.

T. ROWE PRICE FIXED INCOME SERIES, INC.

T. ROWE PRICE FLOATING RATE FUND, INC.

T. ROWE PRICE GNMA FUND

T. ROWE PRICE HIGH YIELD FUND, INC.

T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC.

T. ROWE PRICE INFLATION FOCUSED BOND FUND, INC.

T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC.

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

T. ROWE PRICE NEW INCOME FUND, INC.

T. ROWE PRICE PRIME RESERVE FUND, INC.

T. ROWE PRICE RESERVE INVESTMENT FUNDS, INC.

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

T. ROWE PRICE STATE TAX-FREE INCOME TRUST

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

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

/s/Michael C. Gitlin

Michael C. Gitlin October 22, 2013

(Signatures Continued)

Page 10

BRIAN C. ROGERS, Director/Trustee

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION FUND

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

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

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

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND

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 MEDIA & TELECOMMUNICATIONS FUND, INC.

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

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

T. ROWE PRICE NEW AMERICA GROWTH FUND

T. ROWE PRICE NEW ERA FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

T. ROWE PRICE PERSONAL STRATEGY 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/Brian C. Rogers

Brian C. Rogers October 22, 2013

(Signatures Continued)

Page 11

ATTEST:

/s/Patricia B. Lippert

Patricia B. Lippert, Secretary

XML

Advisor Class Shares | T. Rowe Price New America Growth Fund

T. Rowe Price

New America Growth Fund—Advisor Class

SUMMARY

Investment Objective

The fund seeks to provide long-term capital growth by investing primarily in the common stocks of growth companies.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

Fees and Expenses of the Fund’s Advisor Class

Annual fund operating expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses	Advisor Class Shares T. Rowe Price New America Growth Fund T. Rowe Price New America Growth Fund-Advisor Class
Management fees	0.65%
Distribution and service (12b-1) fees	0.25%
Other expenses	0.17%
Total annual fund operating expenses	1.07%

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and 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 (USD $)	1 year	3 years	5 years	10 years
Advisor Class Shares T. Rowe Price New America Growth Fund T. Rowe Price New America Growth Fund-Advisor Class	109	340	590	1,306

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 91.5% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund invests primarily (at least 65% of its total assets) in common stocks of U.S. companies operating in those sectors of the economy that, in the view of T. Rowe Price, are the fastest growing or have the greatest growth potential. The U.S. economy continues to evolve, in part because of the application of new technologies and scientific advances. Growing companies that are positioned to benefit from dynamic technological, social, medical, and business developments that help define the current U.S. economic landscape can be found across an array of industries. The fund’s allocation to industry sectors will generally reflect such factors as the overall revenue growth of the component companies in a sector and the sector’s contribution to U.S. gross domestic product from year to year, although the fund may at times invest significantly in stocks of technology companies.

Holdings range from large-cap to small-cap companies. In selecting stocks, we look for many characteristics, typically including, but not limited to:

• earnings growth rates that generally exceed that of the average company in the S&P 500 Stock Index;

• favorable company fundamentals, such as a strong balance sheet, sound business strategy, and promising competitive positioning;

• effective management; or

• stock valuations, such as price/earnings or price/cash flow ratios, that seem reasonable relative to the company’s prospects.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria, as previously described, and purchase securities that the fund’s management believes will provide an opportunity for substantial appreciation. These situations might arise when the fund’s management believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will typically be invested in U.S. common stocks, the fund may invest in foreign stocks in keeping with the fund’s objectives.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

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

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a company or a particular industry.

Investment style risk Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The fund’s growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than certain other types of stocks and their prices usually fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Small- and mid-cap stock risk To the extent the fund invests in small- and medium-sized companies, it is exposed to greater volatility than a fund that invests only in large companies. Small- and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Smaller companies may have limited trading markets and tend to be more sensitive to changes in overall economic conditions.

Industry risk To the extent the fund invests in technology companies, the fund may perform poorly during a downturn in one or more of the industries that heavily impact technology companies. Technology companies can be adversely affected by, among other things, intense competition, earnings disappointments, and rapid obsolescence of products and services due to technological innovations or changing consumer preferences.

Foreign investing risk This is the risk that the fund’s investments in foreign securities may be adversely affected by political, social, and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.

Performance

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index. The fund’s past performance (before and after taxes) is not necessarily an indication of future performance.

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

New America Growth Fund–Advisor Class
Calendar Year Returns

	Quarter Ended	Total Return
Best Quarter	6/30/09	18.62%
Worst Quarter	12/31/08	-25.69%

In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Average Annual Total Returns
Periods ended
December 31, 2013

Average Annual Total Returns Advisor Class Shares T. Rowe Price New America Growth Fund	1 Year	5 Years	Since inception		Inception Date
T. Rowe Price New America Growth Fund-Advisor Class	37.34%	22.34%	9.33%		Dec. 29, 2005
T. Rowe Price New America Growth Fund-Advisor Class Returns after taxes on distributions	33.29%	21.37%	8.19%		Dec. 29, 2005
T. Rowe Price New America Growth Fund-Advisor Class Returns after taxes on distributions and sale of fund shares	23.23%	18.19%	7.32%		Dec. 29, 2005
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	32.39%	17.94%	7.22%
Lipper Multi-Cap Growth Funds Index	36.52%	20.53%	7.57%	[1]	Dec. 31, 2005

Updated performance information is available through troweprice.com or may be obtained by calling 1-800-638-8790.

[1] Returns as of 12/31/05.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price New America Growth Fund

Prospectus Date

rr_ProspectusDate

May 01, 2014

Investor Class Shares | T. Rowe Price New America Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price

New America Growth Fund

SUMMARY

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks to provide long-term capital growth by investing primarily in the common stocks of growth companies.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual fund operating expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 91.5% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

91.50%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Investments, Risks, and Performance

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund invests primarily (at least 65% of its total assets) in common stocks of U.S. companies operating in those sectors of the economy that, in the view of T. Rowe Price, are the fastest growing or have the greatest growth potential. The U.S. economy continues to evolve, in part because of the application of new technologies and scientific advances. Growing companies that are positioned to benefit from dynamic technological, social, medical, and business developments that help define the current U.S. economic landscape can be found across an array of industries. The fund’s allocation to industry sectors will generally reflect such factors as the overall revenue growth of the component companies in a sector and the sector’s contribution to U.S. gross domestic product from year to year, although the fund may at times invest significantly in stocks of technology companies.

Holdings range from large-cap to small-cap companies. In selecting stocks, we look for many characteristics, typically including, but not limited to:

• earnings growth rates that generally exceed that of the average company in the S&P 500 Stock Index;

• favorable company fundamentals, such as a strong balance sheet, sound business strategy, and promising competitive positioning;

• effective management; or

• stock valuations, such as price/earnings or price/cash flow ratios, that seem reasonable relative to the company’s prospects.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria, as previously described, and purchase securities that the fund’s management believes will provide an opportunity for substantial appreciation. These situations might arise when the fund’s management believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will typically be invested in U.S. common stocks, the fund may invest in foreign stocks in keeping with the fund’s objectives.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

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

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a company or a particular industry.

Investment style risk Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The fund’s growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than certain other types of stocks and their prices usually fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Small- and mid-cap stock risk To the extent the fund invests in small- and medium-sized companies, it is exposed to greater volatility than a fund that invests only in large companies. Small- and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Smaller companies may have limited trading markets and tend to be more sensitive to changes in overall economic conditions.

Industry risk To the extent the fund invests in technology companies, the fund may perform poorly during a downturn in one or more of the industries that heavily impact technology companies. Technology companies can be adversely affected by, among other things, intense competition, earnings disappointments, and rapid obsolescence of products and services due to technological innovations or changing consumer preferences.

Foreign investing risk This is the risk that the fund’s investments in foreign securities may be adversely affected by political, social, and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index. The fund’s past performance (before and after taxes) is not necessarily an indication of future performance.

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

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-225-5132

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

troweprice.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart [Heading]

rr_BarChartHeading

New America Growth Fund
Calendar Year Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return
Best Quarter	6/30/09	18.70%
Worst Quarter	12/31/08	-25.70%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
Periods ended
December 31, 2013

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com or may be obtained by calling 1-800-225-5132.

Investor Class Shares | T. Rowe Price New America Growth Fund | T. Rowe Price New America Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Maximum sales charge (load) imposed on purchases

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum deferred sales charge (load)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption fee

rr_RedemptionFeeOverRedemption

none

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1]

Management fees

rr_ManagementFeesOverAssets

0.65%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.16%

Total annual fund operating expenses

rr_ExpensesOverAssets

0.81%

1 year

rr_ExpenseExampleYear01

83

3 years

rr_ExpenseExampleYear03

259

5 years

rr_ExpenseExampleYear05

450

10 years

rr_ExpenseExampleYear10

$ 1,002

2004

rr_AnnualReturn2004

11.10%

2005

rr_AnnualReturn2005

4.35%

2006

rr_AnnualReturn2006

7.24%

2007

rr_AnnualReturn2007

13.74%

2008

rr_AnnualReturn2008

(38.31%)

2009

rr_AnnualReturn2009

49.33%

2010

rr_AnnualReturn2010

19.34%

2011

rr_AnnualReturn2011

(0.41%)

2012

rr_AnnualReturn2012

13.56%

2013

rr_AnnualReturn2013

37.73%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.70%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(25.70%)

1 Year

rr_AverageAnnualReturnYear01

37.73%

5 Years

rr_AverageAnnualReturnYear05

22.65%

10 Years

rr_AverageAnnualReturnYear10

9.24%

Investor Class Shares | T. Rowe Price New America Growth Fund | Returns after taxes on distributions | T. Rowe Price New America Growth Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

33.59%

5 Years

rr_AverageAnnualReturnYear05

21.65%

10 Years

rr_AverageAnnualReturnYear10

8.17%

Investor Class Shares | T. Rowe Price New America Growth Fund | Returns after taxes on distributions and sale of fund shares | T. Rowe Price New America Growth Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

23.43%

5 Years

rr_AverageAnnualReturnYear05

18.45%

10 Years

rr_AverageAnnualReturnYear10

7.36%

Investor Class Shares | T. Rowe Price New America Growth Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

32.39%

5 Years

rr_AverageAnnualReturnYear05

17.94%

10 Years

rr_AverageAnnualReturnYear10

7.41%

Investor Class Shares | T. Rowe Price New America Growth Fund | Lipper Multi-Cap Growth Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

36.52%

5 Years

rr_AverageAnnualReturnYear05

20.53%

10 Years

rr_AverageAnnualReturnYear10

8.15%

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

XML

Investor Class Shares | T. Rowe Price New America Growth Fund

T. Rowe Price

New America Growth Fund

SUMMARY

Investment Objective

The fund seeks to provide long-term capital growth by investing primarily in the common stocks of growth companies.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Shareholder Fees (USD $)		Investor Class Shares T. Rowe Price New America Growth Fund
Maximum sales charge (load) imposed on purchases		none
Maximum deferred sales charge (load)		none
Redemption fee		none
Maximum account fee	[1]	20

Annual fund operating expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Annual Fund Operating Expenses	Investor Class Shares T. Rowe Price New America Growth Fund
Management fees	0.65%
Distribution and service (12b-1) fees	none
Other expenses	0.16%
Total annual fund operating expenses	0.81%

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 year	3 years	5 years	10 years
Investor Class Shares T. Rowe Price New America Growth Fund	83	259	450	1,002

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 91.5% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund invests primarily (at least 65% of its total assets) in common stocks of U.S. companies operating in those sectors of the economy that, in the view of T. Rowe Price, are the fastest growing or have the greatest growth potential. The U.S. economy continues to evolve, in part because of the application of new technologies and scientific advances. Growing companies that are positioned to benefit from dynamic technological, social, medical, and business developments that help define the current U.S. economic landscape can be found across an array of industries. The fund’s allocation to industry sectors will generally reflect such factors as the overall revenue growth of the component companies in a sector and the sector’s contribution to U.S. gross domestic product from year to year, although the fund may at times invest significantly in stocks of technology companies.

Holdings range from large-cap to small-cap companies. In selecting stocks, we look for many characteristics, typically including, but not limited to:

• earnings growth rates that generally exceed that of the average company in the S&P 500 Stock Index;

• favorable company fundamentals, such as a strong balance sheet, sound business strategy, and promising competitive positioning;

• effective management; or

• stock valuations, such as price/earnings or price/cash flow ratios, that seem reasonable relative to the company’s prospects.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria, as previously described, and purchase securities that the fund’s management believes will provide an opportunity for substantial appreciation. These situations might arise when the fund’s management believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will typically be invested in U.S. common stocks, the fund may invest in foreign stocks in keeping with the fund’s objectives.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

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

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a company or a particular industry.

Investment style risk Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The fund’s growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than certain other types of stocks and their prices usually fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Small- and mid-cap stock risk To the extent the fund invests in small- and medium-sized companies, it is exposed to greater volatility than a fund that invests only in large companies. Small- and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Smaller companies may have limited trading markets and tend to be more sensitive to changes in overall economic conditions.

Industry risk To the extent the fund invests in technology companies, the fund may perform poorly during a downturn in one or more of the industries that heavily impact technology companies. Technology companies can be adversely affected by, among other things, intense competition, earnings disappointments, and rapid obsolescence of products and services due to technological innovations or changing consumer preferences.

Foreign investing risk This is the risk that the fund’s investments in foreign securities may be adversely affected by political, social, and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.

Performance

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index. The fund’s past performance (before and after taxes) is not necessarily an indication of future performance.

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

New America Growth Fund
Calendar Year Returns

	Quarter Ended	Total Return
Best Quarter	6/30/09	18.70%
Worst Quarter	12/31/08	-25.70%

In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Average Annual Total Returns
Periods ended
December 31, 2013

Average Annual Total Returns Investor Class Shares	1 Year	5 Years	10 Years
T. Rowe Price New America Growth Fund	37.73%	22.65%	9.24%
T. Rowe Price New America Growth Fund Returns after taxes on distributions	33.59%	21.65%	8.17%
T. Rowe Price New America Growth Fund Returns after taxes on distributions and sale of fund shares	23.43%	18.45%	7.36%
T. Rowe Price New America Growth Fund S&P 500 Index (reflects no deduction for fees, expenses, or taxes)	32.39%	17.94%	7.41%
T. Rowe Price New America Growth Fund Lipper Multi-Cap Growth Funds Index	36.52%	20.53%	8.15%

Updated performance information is available through troweprice.com or may be obtained by calling 1-800-225-5132.

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

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2013
Registrant Name	dei_EntityRegistrantName	T. Rowe Price New America Growth Fund
Central Index Key	dei_EntityCentralIndexKey	0000773485
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Apr. 25, 2014
Document Effective Date	dei_DocumentEffectiveDate	May 01, 2014
Prospectus Date	rr_ProspectusDate	May 01, 2014

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	T. Rowe Price New America Growth Fund
Prospectus Date	rr_ProspectusDate	May 01, 2014
Document Creation Date	dei_DocumentCreationDate	Apr. 25, 2014

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price New America Growth Fund

Prospectus Date

rr_ProspectusDate

May 01, 2014

Advisor Class Shares | T. Rowe Price New America Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price

New America Growth Fund—Advisor Class

SUMMARY

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks to provide long-term capital growth by investing primarily in the common stocks of growth companies.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Fees and Expenses of the Fund’s Advisor Class

Annual fund operating expenses
(expenses that you pay each year as a
percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 91.5% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

91.50%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Investments, Risks, and Performance

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund invests primarily (at least 65% of its total assets) in common stocks of U.S. companies operating in those sectors of the economy that, in the view of T. Rowe Price, are the fastest growing or have the greatest growth potential. The U.S. economy continues to evolve, in part because of the application of new technologies and scientific advances. Growing companies that are positioned to benefit from dynamic technological, social, medical, and business developments that help define the current U.S. economic landscape can be found across an array of industries. The fund’s allocation to industry sectors will generally reflect such factors as the overall revenue growth of the component companies in a sector and the sector’s contribution to U.S. gross domestic product from year to year, although the fund may at times invest significantly in stocks of technology companies.

Holdings range from large-cap to small-cap companies. In selecting stocks, we look for many characteristics, typically including, but not limited to:

• earnings growth rates that generally exceed that of the average company in the S&P 500 Stock Index;

• favorable company fundamentals, such as a strong balance sheet, sound business strategy, and promising competitive positioning;

• effective management; or

• stock valuations, such as price/earnings or price/cash flow ratios, that seem reasonable relative to the company’s prospects.

In pursuing its investment objective, the fund has the discretion to deviate from its normal investment criteria, as previously described, and purchase securities that the fund’s management believes will provide an opportunity for substantial appreciation. These situations might arise when the fund’s management believes a security could increase in value for a variety of reasons, including an extraordinary corporate event, a new product introduction or innovation, a favorable competitive development, or a change in management.

While most assets will typically be invested in U.S. common stocks, the fund may invest in foreign stocks in keeping with the fund’s objectives.

The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

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

Risks of stock investing Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising prices and falling prices. The value of a stock in which the fund invests may decline due to general weakness in the stock market or because of factors that affect a company or a particular industry.

Investment style risk Different investment styles tend to shift in and out of favor, depending on market conditions and investor sentiment. The fund’s growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than certain other types of stocks and their prices usually fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Small- and mid-cap stock risk To the extent the fund invests in small- and medium-sized companies, it is exposed to greater volatility than a fund that invests only in large companies. Small- and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Smaller companies may have limited trading markets and tend to be more sensitive to changes in overall economic conditions.

Industry risk To the extent the fund invests in technology companies, the fund may perform poorly during a downturn in one or more of the industries that heavily impact technology companies. Technology companies can be adversely affected by, among other things, intense competition, earnings disappointments, and rapid obsolescence of products and services due to technological innovations or changing consumer preferences.

Foreign investing risk This is the risk that the fund’s investments in foreign securities may be adversely affected by political, social, and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index. The fund’s past performance (before and after taxes) is not necessarily an indication of future performance.

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

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart showing calendar year returns and the average annual total returns table indicate risk by illustrating how much returns can differ from one year to the next and how fund performance compares with that of a comparable market index.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-638-8790

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

troweprice.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

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

Bar Chart [Heading]

rr_BarChartHeading

New America Growth Fund–Advisor Class
Calendar Year Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return
Best Quarter	6/30/09	18.62%
Worst Quarter	12/31/08	-25.69%

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
Periods ended
December 31, 2013

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com or may be obtained by calling 1-800-638-8790.

Advisor Class Shares | T. Rowe Price New America Growth Fund | T. Rowe Price New America Growth Fund-Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.65%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.17%

Total annual fund operating expenses

rr_ExpensesOverAssets

1.07%

1 year

rr_ExpenseExampleYear01

$ 109

3 years

rr_ExpenseExampleYear03

340

5 years

rr_ExpenseExampleYear05

590

10 years

rr_ExpenseExampleYear10

$ 1,306

2006

rr_AnnualReturn2006

7.01%

2007

rr_AnnualReturn2007

13.51%

2008

rr_AnnualReturn2008

(38.42%)

2009

rr_AnnualReturn2009

48.98%

2010

rr_AnnualReturn2010

19.06%

2011

rr_AnnualReturn2011

(0.66%)

2012

rr_AnnualReturn2012

13.26%

2013

rr_AnnualReturn2013

37.34%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.62%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(25.69%)

1 Year

rr_AverageAnnualReturnYear01

37.34%

5 Years

rr_AverageAnnualReturnYear05

22.34%

Since inception

rr_AverageAnnualReturnSinceInception

9.33%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2005

Advisor Class Shares | T. Rowe Price New America Growth Fund | Returns after taxes on distributions | T. Rowe Price New America Growth Fund-Advisor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

33.29%

5 Years

rr_AverageAnnualReturnYear05

21.37%

Since inception

rr_AverageAnnualReturnSinceInception

8.19%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2005

Advisor Class Shares | T. Rowe Price New America Growth Fund | Returns after taxes on distributions and sale of fund shares | T. Rowe Price New America Growth Fund-Advisor Class

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

23.23%

5 Years

rr_AverageAnnualReturnYear05

18.19%

Since inception

rr_AverageAnnualReturnSinceInception

7.32%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 29, 2005

Advisor Class Shares | T. Rowe Price New America Growth Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

32.39%

5 Years

rr_AverageAnnualReturnYear05

17.94%

Since inception

rr_AverageAnnualReturnSinceInception

7.22%

Advisor Class Shares | T. Rowe Price New America Growth Fund | Lipper Multi-Cap Growth Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

36.52%

5 Years

rr_AverageAnnualReturnYear05

20.53%

Since inception

rr_AverageAnnualReturnSinceInception

7.57%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2005

[1] Returns as of 12/31/05.