00000387212012-06-202012-06-200000038721fcf:S000006754Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000018321Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000018322Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000018323Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000068977Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000066417Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000018321Memberrr:AfterTaxesOnDistributionsMember2012-06-202012-06-200000038721fcf:S000006754Memberfcf:C000018321Memberrr:AfterTaxesOnDistributionsAndSalesMember2012-06-202012-06-200000038721fcf:S000006754Memberfcf:Index1040Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:Index8948Member2012-06-202012-06-200000038721fcf:S000006754Memberfcf:Index1Member2012-06-202012-06-20 iso4217:USD xbrli:pure xbrli:shares iso4217:USD xbrli:shares 0000038721FRANKLIN CUSTODIAN FUNDSOther2010-02-042012-06-202011-09-30false2012-06-20~ http://xbrl.sec.gov/rr/role/RiskReturnDetail column period compact * row primary compact * ~Fund SummaryInvestment GoalCapital appreciation.Fees and Expenses of the FundYou may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds.50000These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 110 in the Fund's Prospectus and under “Buying and Selling Shares” on page 61 of the Fund’s Statement of Additional Information.SHAREHOLDER FEES (fees paid directly from your investment)~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact fcf_S000006754Member column rr_ProspectusShareClassAxis compact * row primary compact * ~0.05750.000.000.000.000.000.04000.01000.000.00<div><p>ANNUAL FUND OPERATING EXPENSES</p><p>(expenses that you pay each year as a percentage of the value of your investment)</p></div>~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact fcf_S000006754Member column rr_ProspectusShareClassAxis compact * row primary compact * ~0.00480.00480.00480.00480.00480.00250.00990.01000.00500.000.00240.00240.00240.00240.00240.00970.01710.01720.01220.0072ExampleThis 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 the period. 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:66886610801696~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact fcf_S000006754Member column rr_ProspectusShareClassAxis compact * row primary compact * ~574839112818232755429332030124387670147774230401894If you do not sell your shares:~ http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption column dei_LegalEntityAxis compact fcf_S000006754Member column rr_ProspectusShareClassAxis compact * row primary compact * ~17453992818231755429332030Portfolio Turnover0.3011<div><p>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 30.11% of the average value of its portfolio.</p></div>Principal Investment StrategiesUnder normal market conditions, the Fund seeks investments primarily in equity securities of companies that the investment management believes are leaders in innovation, take advantage of new technologies, have superior management, and benefit from new industry conditions in the dynamically changing global economy.<div><p>Under normal market conditions, the Fund seeks investments primarily in equity securities of companies that the investment management believes are leaders in innovation, take advantage of new technologies, have superior management, and benefit from new industry conditions in the dynamically changing global economy. The Fund invests primarily in common stock.</p><p>In pursuing these objectives, the fund managers may invest in any economic sector, market capitalization and may invest in companies both inside and outside of the United States. Although the investment manager will search for investments across a large number of sectors, it expects to have significant positions in particular sectors including, for example, technology and health care.</p><p>The investment manager uses fundamental, "bottom-up" research to seek companies meeting its criteria of growth potential, quality and valuation. In seeking sustainable growth characteristics, the investment manager looks for companies it believes can produce sustainable earnings and cash flow growth, evaluating the long-term market opportunity and competitive structure of an industry to target leaders and emerging leaders.</p></div>Principal Risks<div><p>You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.</p><p>Market</p><p>The market values of securities owned by the Fund will go up and down, sometimes rapidly or unpredictably. A security&#146;s market value may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all securities. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.</p><p>Individual stock prices tend to go up and down more dramatically than those of other types of investments. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.</p><p>Focus</p><p>The technology sector has historically been volatile due to the rapid pace of product change and development within the sector. The activities of health care companies may be funded or subsidized by federal and state governments and changes in funding may adversely affect the profitability of these companies. Technology and health care companies may also be affected by legislation or changes in government regulation and policies.</p><p>Foreign Securities</p><p>Investing in foreign securities typically involves more risks than investing in U.S. securities, including risks related to currency exchange rates and policies, country or government specific issues, less favorable trading practices or regulation and greater price volatility. Certain of these risks also may apply to securities of U.S. companies with significant foreign operations.</p><p>Midsize Companies</p><p>Securities issued by midsize companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development and limited or less developed product lines and markets.</p><p>Management</p><p>The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.</p><p>Growth Style Investing</p><p>Growth stock prices reflect projections of future earnings or revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Prices of these companies&#146; securities may be more volatile than other securities, particularly over the short term.</p></div>PerformanceThe following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.(800) DIAL BEN/342-5236franklintempleton.comSales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.<div><p>The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.</p><p>The secondary indices in the table below show how the Fund's performance compares to a group of securities that aligns more closely with the Fund's investment strategies.</p><p>Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.</p></div>CLASS A ANNUAL TOTAL RETURNS-0.19870.38640.07690.07180.02640.2308-0.41010.47110.1851-0.0247~ http://xbrl.sec.gov/rr/role/BarChartData column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact fcf_S000006754Member ~Best Quarter:2003-06-300.1647Worst Quarter:2008-12-31-0.2341<table style="font: 11px sans-serif; background-color:#DDDDDD" border="0" cellspacing="0" cellpadding="5" width="745"><tr><td style="border-bottom: 2px solid #ffffff;" valign="top">Best Quarter:</td><td style="border-bottom: 2px solid #ffffff;" valign="bottom" align="right">Q2'03</td><td style="border-bottom: 2px solid #ffffff;" valign="bottom" align="right">16.47%</td></tr><tr><td style="border-bottom: 2px solid #ffffff;" valign="top">Worst Quarter:</td><td style="border-bottom: 2px solid #ffffff;" valign="bottom" align="right">Q4'08</td><td style="border-bottom: 2px solid #ffffff;" valign="bottom" align="right">-23.41%</td></tr></table><div><p>AVERAGE ANNUAL TOTAL RETURNS<br/>(figures reflect sales charges)</p><p>For the periods ended December 31, 2011</p></div>~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact fcf_S000006754Member column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact * ~Return Before Taxes-0.08080.03070.0435-0.08370.02650.0414-0.04840.02520.0374-0.07000.03180.0435-0.04160.03520.0419-0.02750.04000.0467-0.02250.04490.05070.02640.02500.0260-0.00830.02430.03730.0211-0.00250.0292<div><p>Historical performance for Class R and Advisor Class shares prior to their inception is based on the performance of Class A shares. Class R and Advisor Class performance has been adjusted to reflect differences in sales charges and 12b-1 expenses (with respect to Class R only) between classes.</p><p>The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.</p></div>New or additional investments into Class B are no longer permitted.