bcgpartc.htm - Generated by SEC Publisher for SEC Filing

0000902259-11-000006.txt : 20110519 0000902259-11-000006.hdr.sgml : 20110519 20110519091417 ACCESSION NUMBER: 0000902259-11-000006 CONFORMED SUBMISSION TYPE: 485BPOS PUBLIC DOCUMENT COUNT: 7 FILED AS OF DATE: 20110519 DATE AS OF CHANGE: 20110519 EFFECTIVENESS DATE: 20110519 FILER: COMPANY DATA: COMPANY CONFORMED NAME: T. Rowe Price Blue Chip Growth Fund, Inc. CENTRAL INDEX KEY: 0000902259 IRS NUMBER: 521827505 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1933 Act SEC FILE NUMBER: 033-49581 FILM NUMBER: 11856513 BUSINESS ADDRESS: STREET 1: 100 EAST PRATT STREET CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 410-345-2000 MAIL ADDRESS: STREET 1: 100 EAST PRATT STREET CITY: BALTIMORE STATE: MD ZIP: 21202 FORMER COMPANY: FORMER CONFORMED NAME: PRICE T ROWE BLUE CHIP GROWTH FUND INC DATE OF NAME CHANGE: 19930426 FILER: COMPANY DATA: COMPANY CONFORMED NAME: T. Rowe Price Blue Chip Growth Fund, Inc. CENTRAL INDEX KEY: 0000902259 IRS NUMBER: 521827505 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 485BPOS SEC ACT: 1940 Act SEC FILE NUMBER: 811-07059 FILM NUMBER: 11856514 BUSINESS ADDRESS: STREET 1: 100 EAST PRATT STREET CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 410-345-2000 MAIL ADDRESS: STREET 1: 100 EAST PRATT STREET CITY: BALTIMORE STATE: MD ZIP: 21202 FORMER COMPANY: FORMER CONFORMED NAME: PRICE T ROWE BLUE CHIP GROWTH FUND INC DATE OF NAME CHANGE: 19930426

0000902259 S000002069 T. Rowe Price Blue Chip Growth Fund, Inc.

C000005424 T. Rowe Price Blue Chip Growth Fund, Inc. TRBCX

C000005425 T. Rowe Price Blue Chip Growth Fund-Advisor Class PABGX

C000005426 T. Rowe Price Blue Chip Growth Fund-R Class RRBGX

485BPOS 1 bcgpartc.htm bcgpartc.htm - Generated by SEC Publisher for SEC Filing

Page 1

Registration Nos. 033-49581/811-7059

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. 24 /X/

and/or

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

Amendment No. 25 /X/

T. ROWE PRICE BLUE CHIP GROWTH 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

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 19, 2011.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

/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 19, 2011
Edward C. Bernard	(Chief Executive Officer)


/s/Gregory K. Hinkle	Treasurer (Chief	May 19, 2011
Gregory K. Hinkle	Financial Officer)


*	Director	May 19, 2011
William R. Brody


*	Director	May 19, 2011
Jeremiah E. Casey


*	Director	May 19, 2011
Anthony W. Deering


*	Director	May 19, 2011
Donald W. Dick, Jr.


*	Director	May 19, 2011
Karen N. Horn


*	Director	May 19, 2011
Theo C. Rodgers


/s/Brian C. Rogers	Director	May 19, 2011
Brian C. Rogers


*	Director	May 19, 2011
John G. Schreiber


*	Director	May 19, 2011
Mark. R. Tercek


*/s/David Oestreicher	Vice President and	May 19, 2011
David Oestreicher	Attorney-In-Fact

Page 4

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 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 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.

T. ROWE PRICE STATE TAX-FREE INCOME TRUST

T. ROWE PRICE STRATEGIC INCOME FUND, INC.

Page 5

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 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.

ALL CORPORATIONS/TRUSTS
/s/Edward C. Bernard Edward C. Bernard	Chairman of the Board (Principal Executive Officer) Director/Trustee	April 20, 2011
/s/Gregory K. Hinkle Gregory K. Hinkle	Treasurer (Principal Financial Officer)	April 20, 2011
/s/William R. Brody William R. Brody	Director/Trustee	April 20, 2011
/s/Jeremiah E. Casey Jeremiah E. Casey	Director/Trustee	April 20, 2011
/s/Anthony W. Deering Anthony W. Deering	Director/Trustee	April 20, 2011
/s/Donald W. Dick, Jr. Donald W. Dick, Jr.	Director/Trustee	April 20, 2011
/s/Karen N. Horn Karen N. Horn	Director/Trustee	April 20, 2011
/s/Theo C. Rodgers Theo C. Rodgers	Director/Trustee	April 20, 2011
/s/John G. Schreiber John G. Schreiber	Director/Trustee	April 20, 2011
/s/Mark R. Tercek Mark R. Tercek	Director/Trustee	April 20, 2011

Page 6

(Signatures Continued)

Page 7

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 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 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 INDEX FUND, INC.

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

/s/Michael C. Gitlin

Michael C. Gitlin

April 20, 2011

(Signatures Continued)

Page 8

JOHN H. LAPORTE, Director/Trustee

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

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

T. ROWE PRICE EQUITY SERIES, INC.

T. ROWE PRICE NEW AMERICA GROWTH FUND

T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC.

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

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

JOHN H. LAPORTE, Director and Vice President

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

T. ROWE PRICE HEALTH SCIENCES FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

/s/John H. Laporte

John H. Laporte

April 20, 2011

(Signatures Continued)

Page 9

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 DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE FINANCIAL SERVICES 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 INDEX TRUST, 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 ERA FUND, INC.

T. ROWE PRICE REAL ASSETS FUND, INC.

T. ROWE PRICE REAL ESTATE FUND, INC.

T. ROWE PRICE TAX-EFFICIENT FUNDS, INC.

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

BRIAN C. ROGERS, Director/Trustee and President

T. ROWE PRICE EQUITY INCOME FUND

T. ROWE PRICE INSTITUTIONAL EQUITY FUNDS, INC.

BRIAN C. ROGERS, Director/Trustee and Vice President

T. ROWE PRICE PERSONAL STRATEGY FUNDS, INC.

T. ROWE PRICE RETIREMENT FUNDS, INC.

T. ROWE PRICE SPECTRUM FUND, INC.

T. ROWE PRICE VALUE FUND, INC.

/s/Brian C. Rogers

Brian C. Rogers

April 20, 2011

(Signatures Continued)

Page 10

ATTEST:

/s/Patricia B. Lippert

Patricia B. Lippert, Secretary

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padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Performance</font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                             Quaters                  Total</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                                   Ended                     Returns</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Best Quarter             06/30/2009              17.42%</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Worst Quarter        12/31/2008              -24.93%</font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">                                        Quarter Ended<font class="_mt">  </font>Total Return</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Best Quarter<font class="_mt">                      </font>6/30/09<font class="_mt">                </font>17.44%</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Worst Quarter<font class="_mt">                   </font>12/31/08<font class="_mt">              </font>-24.91 </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center">                         Quarter         Total</p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center">                         Ended           Return</p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font class="_mt">Best Quarter</font>     <font class="_mt">06/30/2009</font>   <font class="_mt">17.29%</font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font class="_mt">Worst Quarter</font>  <font class="_mt">12/31/2008</font>   <font class="_mt">-24.97%</font></p></div> </div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-Advisor Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calender Year Returns</strong></font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calendar Year Returns</strong></font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-R Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calendar Year Returns</strong></font></p></div> 0.1742 0.1744 0.1729 2009-06-30 2009-06-30 2009-06-30 -0.2493 -0.2491 -0.2497 2008-12-31 2008-12-31 2008-12-31 <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncAdvisorClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncInvestorClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncRClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div> 0.0025 0.0000 0.0050 <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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:</font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncAdvisorClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundInc row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncRClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div> 101 79 130 315 246 406 547 428 702 1213 954 1545 <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div> </div> 0.0099 0.0077 0.0128 Best Quarter Best Quarter Best Quarter Worst Quarter Worst Quarter Worst Quarter 0.0060 0.0060 0.0060 10 0 0 <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc290993002"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-size: 9.5pt; font-family: MetaBoldLF-Roman;" lang="EN-US" color="#004f7c" class="_mt">Investment Objective</font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc291063994"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div> <div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth.</font> </div> <div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div> <div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div> <div> Income is a secondary objective. </div> <div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">Income is a secondary objective.</font> </div> <div> Income is a secondary objective. </div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Fees and Expenses of the Fund's Advisor Class</font></p> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div> <div class="MetaData" align="left"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></div> <div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund's R Class<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt"> </font> </p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div> 0.0014 0.0017 0.0018 1-800-638-8790 1-800-225-5132 1-800-638-8790 troweprice.com troweprice.com troweprice.com <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font> <div> <div class="MetaData"> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. </font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 .</font></font></font></font></font></p></div></div> </div> <div> <div class="MetaData"> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div> <div> <div class="MetaData"> <div> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div></div></div> <div> <div> </div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns </font></b></p> <p style="margin-top: 0px; margin-bottom: 0px;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Periods ended December 31, 2010</font></b></p></div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;" align="left"> <table style="width: 347pt; border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0"> <tr><td> <p style="margin: 0in 0in 0pt;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns</font></b></p></td> <td> </td></tr></table></div> <div style="padding-left: 0%; padding-right: 0%;" align="left"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Periods ended</font></b></div> <div style="padding-left: 0%; padding-right: 0%;" align="left"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"><font color="#004f7c" size="2" class="_mt" style="font-family: Times New Roman;">December 31, 2010</font></font></font></b></div></div> <div class="MetaData"> <p style="margin: 0in 0in 0pt;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns</font></b></p></div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com </font>or may be obtained by calling <font class="_mt">1-800-638-8790</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">. </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com</font> or may be obtained by calling <font class="_mt">1-800-225-5132</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">. </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com</font> or may be obtained by calling <font class="_mt">1-800-638-8790</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">.</font></p></div> </div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. </font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 .</font></font></font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAverageAnnualTotalReturnsTransposedTRowePriceBlueChipGrowthFundIncAdvisorClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAverageAnnualTotalReturnsTransposedTRowePriceBlueChipGrowthFundInc row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * ~</div> </div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAverageAnnualTotalReturnsTransposedTRowePriceBlueChipGrowthFundIncRClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * ~</div> </div> 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. 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. 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. <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> 0.468 0.468 0.468 <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8</font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>% of the average value of its portfolio.</font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div> 2011-05-01 0 <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div> The fund's share price fluctuates, which means you could lose money by investing in the fund. The fund's share price fluctuates, which means you could lose money by investing in the fund. The fund's share price fluctuates, which means you could lose money by investing in the fund. <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div></div> </div> <div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  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 value 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.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></div></div></div></div> </div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt" color="black">T. Rowe Price</font></font></b></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–Advisor Class</font></div></div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c"> </font></b> </div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></div></div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></div></div> <p style="margin: 0in 0in 8pt;"><b><font style="font-size: 14pt; font-family: Trajan Pro;" lang="EN-US" color="#004f7c" class="_mt"><a name="_Toc290545189"> </a>SUMMARY</font></b></p></div> <div class="MetaData"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–R Class</font></div> <div align="left"><font color="#004f7c" size="6" class="_mt"> </font> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 8pt;"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></p></div></div></div> <div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Shareholder fees (fees paid directly from your investment)</font></div></div></div> <div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleShareholderFeesTRowePriceBlueChipGrowthFundInc column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div> <div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div> <div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div> </div> <div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in </font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></div></div> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div> Restated to show maximum 12b-1 fee rate of 0.50%. 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Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005424Memberrr_ProspectusShareClassAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseInvestor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | T. 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A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseMaximum sales charge (load) imposed on purchases8false0rr_MaximumDeferredSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph a -Clause i -Subsection instructions falsefalseMaximum deferred sales charge (load)9false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruetrue00falsefalsefalsefalsefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee10false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue1010[1]falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseMaximum account fee11false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement fees12false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and service (12b-1) fees13false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00170.0017falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses14false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruetrue0.00770.0077falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal annual fund operating expenses15false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue7979falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 year16false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue246246falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 years17false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue428428falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 years18false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue954954falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 years19false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1442-0.1442falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200120false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2423-0.2423falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200221false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.29750.2975falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200322false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09250.0925falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200423false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05950.0595falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200524false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09730.0973falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200625false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13020.1302falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200726false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4262-0.4262falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200827false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.42570.4257falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200928false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16420.1642falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 201029false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Best QuarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label30false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Date31false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.17440.1744falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return32false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Worst QuarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label33false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Date34false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2491-0.2491falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return35false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.16420.1642falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year36false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03380.0338falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years37false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years38false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundinc1falsefalsefalse00falsefalsefalsefalsefalse3falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Investor Class Shares Member {dei_LegalEntityAxis} : S000002069 Member {rr_ProspectusShareClassAxis} : C000005424 Member {rr_PerformanceMeasureAxis} : Return after taxes on distributions 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_InvestorClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Member_rr_PerformanceMeasureAxis_rr_AfterTaxesOnDistributionsMember_rr_ProspectusShareClassAxis_cik000902259_C000005424Memberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseInvestor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_InvestorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005424Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn after taxes on distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseInvestor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | T. 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Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseInvestor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc.49true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:50false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></div></div> <p style="margin: 0in 0in 8pt;"><b><font style="font-size: 14pt; font-family: Trajan Pro;" lang="EN-US" color="#004f7c" class="_mt"><a name="_Toc290545189"> </a>SUMMARY</font></b></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]51false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-size: 9.5pt; font-family: MetaBoldLF-Roman;" lang="EN-US" color="#004f7c" class="_mt">Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]52false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]53false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">Income is a secondary objective.</font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Secondary [Text Block]54false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]55false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]56false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Shareholder fees (fees paid directly from your investment)</font></div></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption [Text]57false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData" align="left"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]58false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]59false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]60false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.4680.468falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover, Rate61false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]62false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]63false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]64false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]65false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]66false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]67false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The fund's share price fluctuates, which means you could lose money by investing in the fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseRisk Lose Money [Text]68false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]69false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]70false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Information Illustrates Variability of Returns [Text]71false0rr_PerformanceAvailabilityPhonerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse001-800-225-5132falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Web site address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Phone [Text]72false0rr_PerformanceAvailabilityWebSiteAddressrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00troweprice.comfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Website address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Website Address [Text]73false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Past Does Not Indicate Future [Text]74false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calendar Year Returns</strong></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]75false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">                                        Quarter Ended<font class="_mt">  </font>Total Return</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Best Quarter<font class="_mt">                      </font>6/30/09<font class="_mt">                </font>17.44%</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Worst Quarter<font class="_mt">                   </font>12/31/08<font class="_mt">              </font>-24.91 </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing [Text Block]76false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;" align="left"> <table style="width: 347pt; border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0"> <tr><td> <p style="margin: 0in 0in 0pt;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns</font></b></p></td> <td> </td></tr></table></div> <div style="padding-left: 0%; padding-right: 0%;" align="left"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Periods ended</font></b></div> <div style="padding-left: 0%; padding-right: 0%;" align="left"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"><font color="#004f7c" size="2" class="_mt" style="font-family: Times New Roman;">December 31, 2010</font></font></font></b></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table Heading77false0rr_PerformanceTableUsesHighestFederalRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00After-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.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that 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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Uses Highest Federal Rate78false0rr_PerformanceTableNotRelevantToTaxDeferredrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that the actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Clause B -Subsection b falsefalsePerformance Table Not Relevant to Tax Deferred79false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com</font> or may be obtained by calling <font class="_mt">1-800-225-5132</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table Narrative80false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundinc1falsefalsefalse00falsefalsefalsefalsefalse6falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Investor Class Shares Member {dei_LegalEntityAxis} : S000002069 Member {rr_PerformanceMeasureAxis} : S P500 Member 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_InvestorClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Member_rr_PerformanceMeasureAxis_cik000902259_SP500Memberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseInvestor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_InvestorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P 500 Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_SP500Memberrr_PerformanceMeasureAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseInvestor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | S&P 500 Index81true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:82false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15060.1506falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year83false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02290.0229falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years84false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years85false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundinc1falsefalsefalse00falsefalsefalsefalsefalse7falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Investor Class Shares Member {dei_LegalEntityAxis} : S000002069 Member {rr_PerformanceMeasureAxis} : Lipper Large Cap Growth Funds Index Member 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_InvestorClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Member_rr_PerformanceMeasureAxis_cik000902259_LipperLargeCapGrowthFundsIndexMemberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseInvestor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_InvestorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseLipper Large-Cap Growth Funds Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_LipperLargeCapGrowthFundsIndexMemberrr_PerformanceMeasureAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseInvestor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | Lipper Large-Cap Growth Funds Index86true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:87false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15130.1513falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year88false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02380.0238falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years89false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0101-0.0101falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years1 Nonretirement accounts with less than a $2,000 balance (with certain exceptions) may be subject to an annual $10 fee.188Risk/Return Detail Data - (T. 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If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label26false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. 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If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return28false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Worst QuarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. 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If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Date30false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2493-0.2493falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. 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Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseAdvisor Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc.45true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:46false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt" color="black">T. Rowe Price</font></font></b></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–Advisor Class</font></div></div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c"> </font></b> </div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]47false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc290993002"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]48false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth.</font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]49false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> Income is a secondary objective. </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Secondary [Text Block]50false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]51false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]52false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Fees and Expenses of the Fund's Advisor Class</font></p> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]53false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]54false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8</font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>% of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]55false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.4680.468falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover, Rate56false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]57false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]58false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]59false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]60false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]61false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]62false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The fund's share price fluctuates, which means you could lose money by investing in the fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseRisk Lose Money [Text]63false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Performance</font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]64false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. </font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 .</font></font></font></font></font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]65false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Information Illustrates Variability of Returns [Text]66false0rr_PerformanceAvailabilityPhonerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse001-800-638-8790falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Web site address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Phone [Text]67false0rr_PerformanceAvailabilityWebSiteAddressrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00troweprice.comfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Website address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Website Address [Text]68false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Past Does Not Indicate Future [Text]69false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-Advisor Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calender Year Returns</strong></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]70false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                             Quaters                  Total</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                                   Ended                     Returns</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Best Quarter             06/30/2009              17.42%</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Worst Quarter        12/31/2008              -24.93%</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing [Text Block]71false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns </font></b></p> <p style="margin-top: 0px; margin-bottom: 0px;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Periods ended December 31, 2010</font></b></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table Heading72false0rr_PerformanceTableUsesHighestFederalRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00After-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.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that 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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Uses Highest Federal Rate73false0rr_PerformanceTableNotRelevantToTaxDeferredrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. </font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 .</font></font></font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that the actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Clause B -Subsection b falsefalsePerformance Table Not Relevant to Tax Deferred74false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com </font>or may be obtained by calling <font class="_mt">1-800-638-8790</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). 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Rowe Price Blue Chip Growth Fund, Inc.3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–R Class</font></div> <div align="left"><font color="#004f7c" size="6" class="_mt"> </font> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 8pt;"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></p></div></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc291063994"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> Income is a secondary objective. </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. 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You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]8false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]9false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund's R Class<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt"> </font> </p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]10false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncRClassShares column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncRClassShares column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncRClassSharesfalsefalse000303 - Schedule - Annual Fund Operating Expenses - {T. Rowe Price Blue Chip Growth Fund, Inc. (R Class Shares)}truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_RClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseR Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_RClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund-R Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005426Memberrr_ProspectusShareClassAxisexplicitMemberR Class SharesT. Rowe Price Blue Chip Growth Fund, Inc.T. Rowe Price Blue Chip Growth Fund-R ClassUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseManagement fees2falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00500.0050[1]falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and service (12b-1) fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseDistribution and service (12b-1) fees3falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsetruefalseOthernanafalsefalseOther expenses4falseRowprimaryElement*8false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.01280.0128falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions truefalseTotal annual fund operating expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01280.0128falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses1 Restated to show maximum 12b-1 fee rate of 0.50%. Actual rate for the prior fiscal year was 0. 47 %..14Annual Fund Operating Expenses - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_RClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]11false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]12false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]13false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncRClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncRClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>truehttp://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncRClassSharesfalsefalse000304 - Schedule - Expense Example {Transposed} - {T. Rowe Price Blue Chip Growth Fund, Inc. (R Class Shares)}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue130130falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 yearduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue406406falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue702702falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue15451545falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$1falseRowdei_DocumentInformationDocumentAxisAxiscik000902259_RClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalseR Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_RClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund-R Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005426Memberrr_ProspectusShareClassAxisexplicitMemberR Class SharesT. Rowe Price Blue Chip Growth Fund, Inc.T. Rowe Price Blue Chip Growth Fund-R ClassUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue130130falsefalsefalsetruefalse2truefalsetrue406406falsefalsefalsetruefalse3truefalsetrue702702falsefalsefalsetruefalse4truefalsetrue15451545falsefalsefalsetruefalseOthernanafalsefalseR Class Shares T. Rowe Price Blue Chip Growth Fund, Inc. T. Rowe Price Blue Chip Growth Fund-R Class41Expense Example - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_RClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]14false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]15false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]16false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]17false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in </font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></div></div> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]18false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]19false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  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 value 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.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></div></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]20false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]21false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div></div></div> <div> <div> </div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]22false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-R Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calendar Year Returns</strong></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]23false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncRClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div>falsefalseBarChart3.jpg<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncRClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_RClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncRClassSharesBarChartfalsefalse000306 - Schedule - Annual Total Returns - {T. Rowe Price Blue Chip Growth Fund, Inc. (R Class Shares)} (Bar Chart)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*7false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.29230.2923falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 2003duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*8false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08830.0883falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2005duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*10false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09290.0929falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Rowe Price Blue Chip Growth Fund, Inc.UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_RClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]27false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com</font> or may be obtained by calling <font class="_mt">1-800-638-8790</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table Narrative126Risk/Return Summary - (T. Rowe Price Blue Chip Growth Fund, Inc.) (R Class Shares) (R Class Shares, T. 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Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and service (12b-1) fees9false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses10false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruetrue0.01280.0128falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal annual fund operating expenses11false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue130130falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 year12false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue406406falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 years13false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue702702falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 years14false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue15451545falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 years15false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.29230.2923falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200316false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08830.0883falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200417false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05470.0547falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200518false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09290.0929falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200619false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12550.1255falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200720false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4285-0.4285falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 200821false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.41980.4198falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 200922false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.15880.1588falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 201023false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Best QuarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label24false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Date25false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.17290.1729falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return26false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Worst QuarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label27false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Date28false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2497-0.2497falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return29false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15880.1588falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year30false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02950.0295falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years31false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07720.0772falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince inception32false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002002-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date33false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundincrclassshares1falsefalsefalse00falsefalsefalsefalsefalse3falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : R Class Shares Member {dei_LegalEntityAxis} : S000002069 Member {rr_ProspectusShareClassAxis} : C000005426 Member {rr_PerformanceMeasureAxis} : Return after taxes on distributions 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_RClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Member_rr_PerformanceMeasureAxis_rr_AfterTaxesOnDistributionsMember_rr_ProspectusShareClassAxis_cik000902259_C000005426Memberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseR Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_RClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund-R Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005426Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn after taxes on distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseR Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | T. Rowe Price Blue Chip Growth Fund-R Class | Return after taxes on distributions34true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:35false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15880.1588falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year36false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02950.0295falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years37false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07710.0771falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince inception38false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002002-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date39false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundincrclassshares1falsefalsefalse00falsefalsefalsefalsefalse4falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : R Class Shares Member {dei_LegalEntityAxis} : S000002069 Member {rr_ProspectusShareClassAxis} : C000005426 Member {rr_PerformanceMeasureAxis} : Return after taxes on distributions and sales of fund shares 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_RClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Member_rr_PerformanceMeasureAxis_rr_AfterTaxesOnDistributionsAndSalesMember_rr_ProspectusShareClassAxis_cik000902259_C000005426Memberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseR Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_RClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund-R Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005426Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn after taxes on distributions and sales of fund sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseR Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc. | T. Rowe Price Blue Chip Growth Fund-R Class | Return after taxes on distributions and sales of fund shares40true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:41false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.10320.1032falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year42false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02530.0253falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years43false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.06790.0679falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince inception44false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002002-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date45false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.troweprice.com/role/disclosureriskreturndetaildataelementstrowepricebluechipgrowthfundincrclassshares1falsefalsefalse00falsefalsefalsefalsefalse5falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : R Class Shares Member {dei_LegalEntityAxis} : S000002069 Member 5/1/2011 - 5/1/2011 Duration_5_1_2011_To_5_1_2011_dei_DocumentInformationDocumentAxis_cik000902259_RClassSharesMember_dei_LegalEntityAxis_cik000902259_S000002069Memberhttp://www.sec.gov/CIK0000902259duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseR Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_RClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseR Class Shares | T. Rowe Price Blue Chip Growth Fund, Inc.46true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:47false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–R Class</font></div> <div align="left"><font color="#004f7c" size="6" class="_mt"> </font> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 8pt;"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></p></div></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]48false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc291063994"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]49false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]50false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> Income is a secondary objective. </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Secondary [Text Block]51false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]52false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]53false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund's R Class<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt"> </font> </p> <p style="margin: 0in 0in 1pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]54false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]55false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]56false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.4680.468falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover, Rate57false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]58false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]59false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]60false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in </font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></div></div> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]61false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]62false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  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 value 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.</font></p></div> <div style="padding-left: 0%; padding-right: 0%;"> <div> <div align="left"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></div></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]63false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The fund's share price fluctuates, which means you could lose money by investing in the fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseRisk Lose Money [Text]64false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]65false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div></div></div> <div> <div> </div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]66false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Information Illustrates Variability of Returns [Text]67false0rr_PerformanceAvailabilityPhonerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse001-800-638-8790falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Web site address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Phone [Text]68false0rr_PerformanceAvailabilityWebSiteAddressrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00troweprice.comfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf applicable, include a statement explaining that updated performance information is available and providing a Website address and/or toll-free (or collect) telephone number where the updated information may be obtained.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Availability Website Address [Text]69false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance Past Does Not Indicate Future [Text]70false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-R Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calendar Year Returns</strong></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]71false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center">                         Quarter         Total</p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center">                         Ended           Return</p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font class="_mt">Best Quarter</font>     <font class="_mt">06/30/2009</font>   <font class="_mt">17.29%</font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font class="_mt">Worst Quarter</font>  <font class="_mt">12/31/2008</font>   <font class="_mt">-24.97%</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing [Text Block]72false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 0pt;"><b><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Average Annual Total Returns</font></b></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table Heading73false0rr_PerformanceTableUsesHighestFederalRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00After-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.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that 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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Uses Highest Federal Rate74false0rr_PerformanceTableNotRelevantToTaxDeferredrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringProvide a brief explanation that the actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Clause B -Subsection b falsefalsePerformance Table Not Relevant to Tax Deferred75false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Updated performance information is available through <font class="_mt">troweprice.com</font> or may be obtained by calling <font class="_mt">1-800-638-8790</font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt" color="black">.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). 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Rowe Price Blue Chip Growth Fund, Inc.3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt" color="black">T. Rowe Price</font></font></b></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund–Advisor Class</font></div></div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c"> </font></b> </div> <div><b><font style="font-family: Trajan Pro; font-size: 14pt;" lang="EN-US" class="_mt" color="#004f7c">SUMMARY</font></b></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><a name="_Toc290993002"> </a><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth.</font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> Income is a secondary objective. </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Secondary [Text Block]7false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]8false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]9false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Fees and Expenses of the Fund's Advisor Class</font></p> <p style="margin: 0in 0in 6pt;"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]10false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncAdvisorClassShares column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncAdvisorClassShares column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncAdvisorClassSharesfalsefalse000203 - Schedule - Annual Fund Operating Expenses - {T. 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Rowe Price Blue Chip Growth Fund-Advisor ClassUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseManagement fees2falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and service (12b-1) fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution and service (12b-1) fees3falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00140.0014falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00140.0014falsefalsefalsetruefalseOthernanafalsefalseOther expenses4falseRowprimaryElement*8false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.00990.0099falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions truefalseTotal annual fund operating expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00990.0099falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses14Annual Fund Operating Expenses - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_AdvisorClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]11false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]12false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]13false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncAdvisorClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncAdvisorClassShares row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>truehttp://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncAdvisorClassSharesfalsefalse000204 - Schedule - Expense Example {Transposed} - {T. Rowe Price Blue Chip Growth Fund, Inc. (Advisor Class Shares)}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue101101falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 yearduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue315315falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue547547falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue12131213falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse10 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$1falseRowdei_DocumentInformationDocumentAxisAxiscik000902259_AdvisorClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalseAdvisor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_AdvisorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. 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Rowe Price Blue Chip Growth Fund-Advisor Class41Expense Example - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_AdvisorClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]14false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]15false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8</font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>% of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]16false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]17false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]18false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]19false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]20false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Performance</font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]21false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown. </font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 .</font></font></font></font></font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]22false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Blue Chip Growth Fund-Advisor Class</strong></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;" align="center"><font size="2" class="_mt"><strong>Calender Year Returns</strong></font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart [Heading]23false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncAdvisorClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div>falsefalseBarChart2.jpg<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncAdvisorClassSharesBarChart column period compact * column primary compact * row dei_DocumentInformationDocumentAxis compact cik000902259_AdvisorClassSharesMember row dei_LegalEntityAxis compact cik000902259_S000002069Member row rr_ProspectusShareClassAxis compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleAnnualTotalReturnsTRowePriceBlueChipGrowthFundIncAdvisorClassSharesBarChartfalsefalse000206 - Schedule - Annual Total Returns - {T. Rowe Price Blue Chip Growth Fund, Inc. (Advisor Class Shares)} (Bar Chart)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1442-0.1442falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2001duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*6false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2426-0.2426falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 2003duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*8false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09100.0910falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 2006duration2011-05-01T00:00:002011-05-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$7falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*11false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12810.1281falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. 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Rowe Price Blue Chip Growth Fund-Advisor Class101Annual Total Returns - (Bar Chart) UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_AdvisorClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]24false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                             Quaters                  Total</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">                                   Ended                     Returns</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Best Quarter             06/30/2009              17.42%</font></p> <p style="margin-top: 0px; margin-bottom: 0px;" align="center"><font size="2" class="_mt">Worst Quarter        12/31/2008              -24.93%</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. 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Rowe Price Blue Chip Growth Fund, Inc.3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 15pt;" class="_mt">T. Rowe Price</font></div> <div align="left"><font style="font-family: Trade Gothic LT Std; font-size: 24pt;" class="_mt" color="#004f7c">Blue Chip Growth Fund<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></div></div> <p style="margin: 0in 0in 8pt;"><b><font style="font-size: 14pt; font-family: Trajan Pro;" lang="EN-US" color="#004f7c" class="_mt"><a name="_Toc290545189"> </a>SUMMARY</font></b></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return [Heading]4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-size: 9.5pt; font-family: MetaBoldLF-Roman;" lang="EN-US" color="#004f7c" class="_mt">Investment Objective</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective [Heading]5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">The fund seeks to provide long-term capital growth. </font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Primary [Text Block]6false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <font style="line-height: 12pt; font-size: 10pt; font-family: ITC Berkeley Oldstyle Std Bk;" lang="EN-US" class="_mt">Income is a secondary objective.</font> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseObjective, Secondary [Text Block]7false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) 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 you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. 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 may indicate higher transaction costs. 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 __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense [Heading]8false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense Narrative [Text Block]9false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 1pt;"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" lang="EN-US" class="_mt" color="#004f7c">Fees and Expenses of the Fund</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <div align="left"><font style="font-family: MetaBoldLF-Italic; font-size: 8pt;" class="_mt" color="#004f7c">Shareholder fees (fees paid directly from your investment)</font></div></div></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption [Text]10false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleShareholderFeesTRowePriceBlueChipGrowthFundInc column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleShareholderFeesTRowePriceBlueChipGrowthFundInc column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleShareholderFeesTRowePriceBlueChipGrowthFundIncfalsefalse000102 - Schedule - Shareholder Fees - {T. Rowe Price Blue Chip Growth Fund, Inc. (Investor Class Shares)}truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseInvestor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_InvestorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005424Memberrr_ProspectusShareClassAxisexplicitMemberInvestor Class SharesT. Rowe Price Blue Chip Growth Fund, Inc.T. Rowe Price Blue Chip Growth FundUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*5false0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseMaximum sales charge (load) imposed on purchases0rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseMaximum sales charge (load) imposed on purchases2falseRowprimaryElement*6false0rr_MaximumDeferredSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph a -Clause i -Subsection instructions falsefalseMaximum deferred sales charge (load)0rr_MaximumDeferredSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseMaximum deferred sales charge (load)3falseRowprimaryElement*7false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruetrue00falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseRedemption fee4falseRowprimaryElement*8false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue1010[1]falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseMaximum account fee0rr_MaximumAccountFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truefalsetrue1010falsefalsefalsetruefalseOthernanafalsefalseMaximum account fee1 Nonretirement accounts with less than a $2,000 balance (with certain exceptions) may be subject to an annual $10 fee.14Shareholder Fees - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]11false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData" align="left"><font color="#004f7c" size="2" class="_mt">Annual fund operating expenses<br />(expenses that you pay each year as a<br />percentage of the value of your investment)</font></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption [Text]12false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncInvestorClassShares1 column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncInvestorClassShares1 column period compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div> </div>falsehttp://www.troweprice.com/role/ScheduleAnnualFundOperatingExpensesTRowePriceBlueChipGrowthFundIncInvestorClassShares1falsefalse000103 - Schedule - Annual Fund Operating Expenses - {T. Rowe Price Blue Chip Growth Fund, Inc. (Investor Class Shares)}truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseInvestor Class Sharesdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_InvestorClassSharesMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_S000002069Memberdei_LegalEntityAxisexplicitMemberfalsefalseT. Rowe Price Blue Chip Growth Fundrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldicik000902259_C000005424Memberrr_ProspectusShareClassAxisexplicitMemberInvestor Class SharesT. Rowe Price Blue Chip Growth Fund, Inc.T. Rowe Price Blue Chip Growth FundUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*5false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseManagement fees2falseRowprimaryElement*6false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and service (12b-1) fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseDistribution and service (12b-1) fees3falseRowprimaryElement*7false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00170.0017falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00170.0017falsefalsefalsetruefalseOthernanafalsefalseOther expenses4falseRowprimaryElement*8false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truetruetrue0.00770.0077falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions truefalseTotal annual fund operating expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00770.0077falsefalsefalsetruefalseOthernanafalsefalseTotal annual fund operating expenses14Annual Fund Operating Expenses - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberColumndei_LegalEntityAxisAxiscik000902259_S000002069MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]13false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Example<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example [Heading]14false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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:</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example Narrative [Text Block]15false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundInc row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>falsefalse<div> <div style="display:none;" >~ http://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundInc row period compact * row primary compact * column dei_DocumentInformationDocumentAxis compact cik000902259_InvestorClassSharesMember column dei_LegalEntityAxis compact cik000902259_S000002069Member column rr_ProspectusShareClassAxis compact * ~</div> </div>truehttp://www.troweprice.com/role/ScheduleExpenseExampleTransposedTRowePriceBlueChipGrowthFundIncfalsefalse000104 - Schedule - Expense Example {Transposed} - {T. Rowe Price Blue Chip Growth Fund, Inc. (Investor Class Shares)}truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*5false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue7979falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalse1 yearduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*6false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue246246falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse3 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*7false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue428428falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalse5 yearsduration2011-05-01T00:00:002011-05-01T00:00:00falseUSDfalsefalse$4falseColumnperiodPeriod*ColumnprimaryElement*8false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsetrue954954falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. 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Rowe Price Blue Chip Growth Fund41Expense Example - (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]16false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Portfolio </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Turnover<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover [Heading]17false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 <font class="_mt">46.8<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>%</font> of the average value of its portfolio.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover [Text Block]18false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 2pt;"><font style="font-family: MetaBoldLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt" color="#004f7c">Investments, Risks, and Performance</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal Investment </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Strategies</font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy [Heading]19false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund will normally invest at least 80% of its net assets <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>(including any borrowings for investment purposes) <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>in the common stocks of large and medium-sized blue chip growth companies. These are firms that, in our view, are well established in their industries and have the potential for above-average earnings growth. We focus on companies with leading market position, seasoned management, and strong financial fundamentals. Our investment approach reflects our belief that solid company fundamentals (with emphasis on strong growth in earnings per share or operating cash flow) combined with a positive industry outlook will ultimately reward investors with strong investment performance. Some of the companies we target will have good prospects for dividend growth.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">While most assets will <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>typically <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>be invested in U.S. common stocks, the fund may invest in <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>foreign stocks <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>in keeping with the fund's objectives.</font></p> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.</font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy Narrative [Text Block]20false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt">Principal </font><font style="font-family: MetaPlusLF-MediumRoman; vertical-align: baseline;" class="_mt" color="black"><font style="line-height: 12pt; font-family: MetaPlusLF-MediumRoman; letter-spacing: 0pt; font-size: 9.5pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Risks<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk [Heading]21false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 6pt;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">As with any mutual fund, there is no guarantee that the fund will achieve its objective. <font class="_mt">The fund's share price fluctuates, which means you could lose money by investing in the fund.</font> The principal risks of investing in this fund are summarized as follows:</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Active management risk</font></i></b><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font> <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Risks of stock </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>investing<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>a <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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.</font></p> <div style="padding-left: 0%; padding-right: 0%;"> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">Investment style </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>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 value 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.</font></p> <p style="margin: 0in 0in 6pt;"><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black">Foreign investing </font></i></b><i><font style="font-family: Berkeley; vertical-align: baseline;" class="_mt" color="black"><i><font style="line-height: 12pt; font-family: Berkeley; letter-spacing: 0pt; font-size: 10pt; text-decoration: none;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font></i></font></i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font></font><b><i><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>risk<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font></i></b><font style="line-height: 12pt; font-family: Berkeley Book; font-size: 10pt;" lang="EN-US" class="_mt" color="black"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  <font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>This is the risk that the fund's investments in foreign securities may be adversely affected by political and economic conditions overseas, reduced liquidity, or decreases in foreign currency values relative to the U.S. dollar. </font></p></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative [Text Block]22false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: MetaMediumLF-Roman; font-size: 9.5pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>Performance<font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font></font><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font style="display: none; font-family: times; color: teal; font-size: 12px;" class="_mt"> </font>  </font></p></div>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table [Heading]23false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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. </font></font><font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund's past performance (before and after taxes) is not necessarily an indication of future performance.</font></font></font></p> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">The fund can also experience short-term performance swings, as shown by the best and worst calendar quarter returns during the years depicted.</font></p></div> <div> <p style="margin: 0in 0in 6pt; padding-left: 0%; padding-right: 0%;"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">In addition, the average annual total returns table shows hypothetical after-tax returns to suggest how taxes paid by a shareholder may influence returns. <font class="_mt">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.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt"><font class="_mt">Actual after-tax returns depend on an investor's tax situation and may differ from those shown.</font> <font class="_mt"><font style="line-height: 12pt; font-family: ITC Berkeley Oldstyle Std Bk; font-size: 10pt;" lang="EN-US" class="_mt">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 <font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font><font style="display: none; font-family: times; color: red; font-size: 12px;" class="_mt"> </font>.</font></font></font></font></font></p></div></div></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance Narrative [Text Block]24false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div class="MetaData"> <p style="margin: 0in 0in 6pt; 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Rowe Price Blue Chip Growth Fund101Annual Total Returns - UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_DocumentInformationDocumentAxisAxiscik000902259_InvestorClassSharesMemberRowdei_LegalEntityAxisAxiscik000902259_S000002069MemberRowrr_ProspectusShareClassAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]26false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div> <div class="MetaData"> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">                                        Quarter Ended<font class="_mt">  </font>Total Return</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Best Quarter<font class="_mt">                      </font>6/30/09<font class="_mt">                </font>17.44%</font></p> <p style="margin: 0in 0in 10pt;" class="MsoNormal"><font class="_mt" style="font-family: Calibri;">Worst Quarter<font class="_mt">                   </font>12/31/08<font class="_mt">              </font>-24.91 </font></p></div> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. 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A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table Narrative128Risk/Return Summary - (T. Rowe Price Blue Chip Growth Fund, Inc.) (Investor Class Shares) (Investor Class Shares, T. 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