485BPOS

As filed with the Securities and Exchange Commission on May 14, 2018

Securities Act Registration No. 333-22467

Investment Company Act File No. 811-08073

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

Post-Effective Amendment No. 41

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

Amendment No. 42

State Farm Variable Product Trust

(Exact name of Registrant as Specified in Charter)

One State Farm Plaza, Bloomington, Illinois	61710-0001
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, including Area Code (888) 702-2307

	Alan Goldberg
Joe R. Monk, Jr.	Stradley Ronon Stevens & Young, LLP
One State Farm Plaza	191 North Wacker Drive, Suite 1601
Bloomington, Illinois 61710-0001	Chicago, Illinois 60606

(Names and addresses of agents for service)

Amending Parts A, B and C, and filing exhibits

It is proposed that this filing will become effective:

☒ Immediately upon filing pursuant to rule 485(b)

☐ on May 1, 2015 pursuant to rule 485(b)

☐ 60 days after filing pursuant to rule 485(a)(1)

☐ on                      pursuant to rule 485(a)(1)

☐ 75 days after filing pursuant to rule 485(a)(2)

☐ on                      pursuant to rule 485(a)(2)

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant, State Farm Variable Product Trust, certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule
485(b) under the Securities Act of 1933 and has duly caused this amendment to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Bloomington, and State of Illinois on the 14th day of May 2018.

STATE FARM VARIABLE PRODUCT TRUST
By:	/s/ Joe R. Monk, Jr.
	Joe R. Monk, Jr.
	Trustee, President and Chairperson of the Board

Pursuant to the Securities Act of 1933, this post-effective amendment has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Joe R. Monk, Jr.	Trustee, President and Chairperson of the Board	May 14, 2018
Joe R. Monk, Jr.
*Paul J. Smith	Trustee, Senior Vice President and Treasurer	May 14, 2018
*Thomas M. Mengler	Trustee	May 14, 2018
*Victor J. Boschini	Trustee	May 14, 2018
*David L. Vance	Trustee	May 14, 2018
*Alan R. Latshaw	Trustee	May 14, 2018
*Anita M. Nagler	Trustee	May 14, 2018

By:	/s/ David Moore
	David Moore
	Attorney-In-Fact
	May 14, 2018

* Original powers of attorney authorizing David Moore, among others, to execute this Registration Statement, and Amendments thereto, for the trustee of the Registrant on whose behalf this Registration Statement is filed, have been executed and are incorporated by reference from post-effective amendment 40 on Form N-1A, No. 333-22467, filed April 27, 2018.

EXHIBIT INDEX

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

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2017
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Central Index Key	dei_EntityCentralIndexKey	0001034633
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Apr. 27, 2018
Document Effective Date	dei_DocumentEffectiveDate	May 01, 2018
Prospectus Date	rr_ProspectusDate	May 01, 2018

XML

State Farm Money Market Fund

MONEY MARKET FUND

Investment Objective:

The Money Market Fund (the “Fund”) seeks to maximize current income to the extent consistent with the preservation of capital and maintenance of liquidity.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Money Market Fund State Farm Money Market Fund
Management Fees	0.10%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.31%
Acquired Fund Fees & Expenses	0.01%	[1]
Total Annual Fund Operating Expenses	0.42%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Money Market Fund | State Farm Money Market Fund | USD ($)	43	135	235	530

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.

Principal Investment Strategies

Under normal conditions, the Fund invests its assets primarily (at least 99.5%) in:

• Debt securities issued or guaranteed by the U.S. government, or by U.S. government agencies or instrumentalities,

• Cash, and

• Repurchase agreements fully collateralized by U.S. Treasury and U.S. government securities.

The Fund is managed in the following manner:

• The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share.

• The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less.

• The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation.

• The Fund invests only in U.S. dollar-denominated securities.

• The Fund seeks to invest in securities that present minimal credit risk.

The Fund intends to qualify as a “government money market fund” as defined in, or interpreted in accordance with, Rule 2a-7 under the Investment Company Act of 1940, as amended. “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully. Government money market funds like the Fund are exempt from requirements that permit money market funds to impose a liquidity fee and/or temporary redemption gates. While the Board of Trustees of State Farm Variable Product Trust may elect to subject the Fund to liquidity fee and gate requirements in the future, the Board of Trustees has elected not to do so at this time.

The Fund’s adviser, State Farm Investment Management Corp. (“SFIM”), seeks to develop an appropriate portfolio of securities for the Fund by considering the differences in yields among securities of different maturities, market sectors and issuers.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment by maintaining a stable NAV of $1.00 per share, the Fund may not succeed and you may lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. The Fund’s adviser has no legal obligation to provide financial support to the Fund, and you should not expect that the adviser will provide financial support to the Fund at any time. An investor in the Fund is subject to the following types of risks:

• Management Risk.    The assessment by the Fund’s investment adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Interest Rate Risk and Call Risk.    The risk that the bonds the Fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, the Fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond.

• Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to the Fund, or that the credit quality of the issuer falls.

• Income Risk.    The risk that the income from the bonds the Fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate.

• Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money.

• Government Securities Risk.    The Fund invests in securities issued or guaranteed by the U.S. government or its agencies and instrumentalities (such as securities issued by the Government National Mortgage Association (Ginnie Mae), the Federal National Mortgage Association (Fannie Mae) or the Federal Home Loan Mortgage Corporation (Freddie Mac)). U.S. government securities are subject to market risk, interest rate risk and credit risk. Securities, such as those issued or guaranteed by Ginnie Mae or the U.S. Treasury, that are backed by the full faith and credit of the United States are guaranteed only as to the timely payment of interest and principal when held to maturity, and the market prices for such securities will fluctuate. Notwithstanding that these securities are backed by the full faith and credit of the United States, circumstances could arise that would prevent the payment of interest or principal. This would result in losses to the Fund. Securities issued or guaranteed by U.S. government related organizations, such as Fannie Mae and Freddie Mac, are not backed by the full faith and credit of the U.S. government and no assurance can be given that the U.S. government will provide financial support. Therefore, U.S. government related organizations may not have the funds to meet their payment obligations in the future. U.S. government securities include zero coupon securities, which tend to be subject to greater market risk than interest-paying securities of similar maturities.

• Transactions Risk.    The Fund could experience a loss and its liquidity may be negatively impacted when selling securities to meet redemption requests by shareholders. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Similarly, large purchases of Fund shares may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would.

• Net Asset Value Risk.    There is no assurance that the Fund will maintain a net asset value of $1.00 per share on a continuous basis. Furthermore, there can be no assurance that the Fund’s sponsor will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a net asset value of $1.00 per share. In the event any money market fund fails to maintain a stable net asset value, other money market funds, including the Fund, could face a universal risk of increased redemption pressures, potentially jeopardizing the stability of their net asset values. In general, certain other money market funds have in the past failed to maintain stable net asset values and there can be no assurance that such failures and resulting redemption pressures will not occur in the future.

An investment in the Fund may be appropriate for you if you seek stability of principal, an investment for the cash portion of an asset allocation plan or are looking for an investment with a lower degree of risk. The Fund may not be suitable for you if you are seeking an investment that is likely to significantly outpace inflation, are investing for retirement or other longer term goals or are investing for growth or maximum current income.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 0.79%,
                 during the first quarter of 2008.

Worst quarter: 0.00%,
                 during the second quarter of 2016.

The following table shows the average annual total return on an investment in the Fund for the 1, 5 and 10-year periods ended 12/31/2017.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns	1 Year	5 Year	10 Year
State Farm Money Market Fund | State Farm Money Market Fund	0.64%	0.14%	0.28%

The Money Market Fund’s current 7-day yield on December 31, 2017 was 1.0325%.

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Money Market Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	MONEY MARKET FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Money Market Fund (the “Fund”) seeks to maximize current income to the extent consistent with the preservation of capital and maintenance of liquidity.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal conditions, the Fund invests its assets primarily (at least 99.5%) in: Debt securities issued or guaranteed by the U.S. government, or by U.S. government agencies or instrumentalities, Cash, and Repurchase agreements fully collateralized by U.S. Treasury and U.S. government securities. The Fund is managed in the following manner: The Fund seeks to maintain a net asset value (“NAV”) of $1.00 per share. The dollar-weighted average maturity of the Fund will be 60 days or less and the dollar-weighted average life to maturity will be 120 days or less. The Fund will only buy securities that have remaining maturities of 397 days or less or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation. The Fund invests only in U.S. dollar-denominated securities. The Fund seeks to invest in securities that present minimal credit risk. The Fund intends to qualify as a “government money market fund” as defined in, or interpreted in accordance with, Rule 2a-7 under the Investment Company Act of 1940, as amended. “Government money market funds” are required to invest at least 99.5% of their assets in (i) cash, (ii) securities issued or guaranteed by the United States or certain U.S. government agencies or instrumentalities and/or (iii) repurchase agreements that are collateralized fully. Government money market funds like the Fund are exempt from requirements that permit money market funds to impose a liquidity fee and/or temporary redemption gates. While the Board of Trustees of State Farm Variable Product Trust may elect to subject the Fund to liquidity fee and gate requirements in the future, the Board of Trustees has elected not to do so at this time. The Fund’s adviser, State Farm Investment Management Corp. (“SFIM”), seeks to develop an appropriate portfolio of securities for the Fund by considering the differences in yields among securities of different maturities, market sectors and issuers.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment by maintaining a stable NAV of $1.00 per share, the Fund may not succeed and you may lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. The Fund’s adviser has no legal obligation to provide financial support to the Fund, and you should not expect that the adviser will provide financial support to the Fund at any time. An investor in the Fund is subject to the following types of risks: Management Risk.    The assessment by the Fund’s investment adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Interest Rate Risk and Call Risk.    The risk that the bonds the Fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, the Fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond. Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to the Fund, or that the credit quality of the issuer falls. Income Risk.    The risk that the income from the bonds the Fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate. Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money. Government Securities Risk.    The Fund invests in securities issued or guaranteed by the U.S. government or its agencies and instrumentalities (such as securities issued by the Government National Mortgage Association (Ginnie Mae), the Federal National Mortgage Association (Fannie Mae) or the Federal Home Loan Mortgage Corporation (Freddie Mac)). U.S. government securities are subject to market risk, interest rate risk and credit risk. Securities, such as those issued or guaranteed by Ginnie Mae or the U.S. Treasury, that are backed by the full faith and credit of the United States are guaranteed only as to the timely payment of interest and principal when held to maturity, and the market prices for such securities will fluctuate. Notwithstanding that these securities are backed by the full faith and credit of the United States, circumstances could arise that would prevent the payment of interest or principal. This would result in losses to the Fund. Securities issued or guaranteed by U.S. government related organizations, such as Fannie Mae and Freddie Mac, are not backed by the full faith and credit of the U.S. government and no assurance can be given that the U.S. government will provide financial support. Therefore, U.S. government related organizations may not have the funds to meet their payment obligations in the future. U.S. government securities include zero coupon securities, which tend to be subject to greater market risk than interest-paying securities of similar maturities. Transactions Risk.    The Fund could experience a loss and its liquidity may be negatively impacted when selling securities to meet redemption requests by shareholders. The risk of loss increases if the redemption requests are unusually large or frequent or occur in times of overall market turmoil or declining prices. Similarly, large purchases of Fund shares may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. Net Asset Value Risk.    There is no assurance that the Fund will maintain a net asset value of $1.00 per share on a continuous basis. Furthermore, there can be no assurance that the Fund’s sponsor will purchase distressed assets from the Fund, make capital infusions, enter into capital support agreements or take other actions to ensure that the Fund maintains a net asset value of $1.00 per share. In the event any money market fund fails to maintain a stable net asset value, other money market funds, including the Fund, could face a universal risk of increased redemption pressures, potentially jeopardizing the stability of their net asset values. In general, certain other money market funds have in the past failed to maintain stable net asset values and there can be no assurance that such failures and resulting redemption pressures will not occur in the future. An investment in the Fund may be appropriate for you if you seek stability of principal, an investment for the cash portion of an asset allocation plan or are looking for an investment with a lower degree of risk. The Fund may not be suitable for you if you are seeking an investment that is likely to significantly outpace inflation, are investing for retirement or other longer term goals or are investing for growth or maximum current income.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Money Market Fund [Text]	rr_RiskMoneyMarketFund	Although the Fund seeks to preserve the value of your investment by maintaining a stable NAV of $1.00 per share, the Fund may not succeed and you may lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 0.79%,                  during the first quarter of 2008. Worst quarter: 0.00%,                  during the second quarter of 2016.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the average annual total return on an investment in the Fund for the 1, 5 and 10-year periods ended 12/31/2017.
Performance Table Closing [Text Block]	rr_PerformanceTableClosingTextBlock	The Money Market Fund’s current 7-day yield on December 31, 2017 was 1.0325%.
Money Market Seven Day Yield, Caption [Text]	rr_MoneyMarketSevenDayYieldCaption	The Money Market Fund’s current 7-day yield on December 31, 2017
Money Market Seven Day Yield	rr_MoneyMarketSevenDayYield	1.0325%
State Farm Money Market Fund | State Farm Money Market Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.10%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.31%
Acquired Fund Fees & Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.42%
1 Year	rr_ExpenseExampleYear01	$ 43
3 Years	rr_ExpenseExampleYear03	135
5 Years	rr_ExpenseExampleYear05	235
10 Years	rr_ExpenseExampleYear10	$ 530
2008	rr_AnnualReturn2008	2.08%
2009	rr_AnnualReturn2009	0.03%
2010	rr_AnnualReturn2010	none
2011	rr_AnnualReturn2011	none
2012	rr_AnnualReturn2012	none
2013	rr_AnnualReturn2013	none
2014	rr_AnnualReturn2014	none
2015	rr_AnnualReturn2015	none
2016	rr_AnnualReturn2016	0.05%
2017	rr_AnnualReturn2017	0.64%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2008
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	0.79%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2016
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	none
1 Year	rr_AverageAnnualReturnYear01	0.64%
5 Year	rr_AverageAnnualReturnYear05	0.14%
10 Year	rr_AverageAnnualReturnYear10	0.28%

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

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State Farm Large Cap Equity Index Fund

LARGE CAP EQUITY INDEX FUND

Investment Objective:

The Large Cap Equity Index Fund (the “Fund”) seeks to match performance of the S&P 500^® Index (the “S&P 500”) by investing in the securities that make up the S&P 500.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Large Cap Equity Index Fund State Farm Large Cap Equity Index Fund
Management Fees	0.10%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.05%
Total Annual Fund Operating Expenses	0.15%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Large Cap Equity Index Fund | State Farm Large Cap Equity Index Fund | USD ($)	15	48	85	192

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 3% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to achieve investment performance that is similar to the S&P 500 (the Fund’s target benchmark). The S&P 500 is a widely used measure of large U.S. company stock performance. Standard & Poor’s (“S&P”) selects stocks for the S&P 500 based upon the following factors:

• market value

• industry group classification (so that the S&P 500 represents a broad range of industry segments within the U.S. economy)

• trading activity, to ensure ample liquidity and efficient share pricing

• fundamental analysis, to ensure that companies in the S&P 500 are stable

The Fund pursues its investment objective by:

• investing in substantially all of the securities that make up the S&P 500

• investing in these securities in proportions that match, approximately, the weightings of the S&P 500

Under normal operating conditions, the Fund seeks to invest at least 90% of its total assets in stocks that are represented in the S&P 500.

BlackRock Fund Advisors (“BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks:

• Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly.

• Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (“SFIM” or the “Manager”) or the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid.

• Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 15.80%,
                 during the second quarter of 2009.

Worst quarter: -21.87%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 for the 1, 5 and 10-year periods ended 12/31/2017. The S&P 500 is a capitalization-weighted measure of the common stocks of 500 large U.S. companies. The S&P 500 represents an unmanaged group of stocks that differ from the composition of the Fund.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Large Cap Equity Index Fund	1 Year	5 Year	10 Year
State Farm Large Cap Equity Index Fund	21.70%	15.53%	8.23%
S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)	21.83%	15.79%	8.50%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Large Cap Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	LARGE CAP EQUITY INDEX FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Large Cap Equity Index Fund (the “Fund”) seeks to match performance of the S&P 500® Index (the “S&P 500”) by investing in the securities that make up the S&P 500.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 3% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	3.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund seeks to achieve investment performance that is similar to the S&P 500 (the Fund’s target benchmark). The S&P 500 is a widely used measure of large U.S. company stock performance. Standard & Poor’s (“S&P”) selects stocks for the S&P 500 based upon the following factors: market value industry group classification (so that the S&P 500 represents a broad range of industry segments within the U.S. economy) trading activity, to ensure ample liquidity and efficient share pricing fundamental analysis, to ensure that companies in the S&P 500 are stable The Fund pursues its investment objective by: investing in substantially all of the securities that make up the S&P 500 investing in these securities in proportions that match, approximately, the weightings of the S&P 500 Under normal operating conditions, the Fund seeks to invest at least 90% of its total assets in stocks that are represented in the S&P 500. BlackRock Fund Advisors (“BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks: Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly. Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (“SFIM” or the “Manager”) or the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid. Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 15.80%,                  during the second quarter of 2009. Worst quarter: -21.87%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 for the 1, 5 and 10-year periods ended 12/31/2017. The S&P 500 is a capitalization-weighted measure of the common stocks of 500 large U.S. companies. The S&P 500 represents an unmanaged group of stocks that differ from the composition of the Fund.
State Farm Large Cap Equity Index Fund | State Farm Large Cap Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.10%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.05%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.15%
1 Year	rr_ExpenseExampleYear01	$ 15
3 Years	rr_ExpenseExampleYear03	48
5 Years	rr_ExpenseExampleYear05	85
10 Years	rr_ExpenseExampleYear10	$ 192
2008	rr_AnnualReturn2008	(37.14%)
2009	rr_AnnualReturn2009	26.07%
2010	rr_AnnualReturn2010	14.73%
2011	rr_AnnualReturn2011	1.83%
2012	rr_AnnualReturn2012	15.72%
2013	rr_AnnualReturn2013	32.01%
2014	rr_AnnualReturn2014	13.37%
2015	rr_AnnualReturn2015	1.12%
2016	rr_AnnualReturn2016	11.74%
2017	rr_AnnualReturn2017	21.70%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	15.80%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(21.87%)
1 Year	rr_AverageAnnualReturnYear01	21.70%
5 Year	rr_AverageAnnualReturnYear05	15.53%
10 Year	rr_AverageAnnualReturnYear10	8.23%
State Farm Large Cap Equity Index Fund | S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	21.83%
5 Year	rr_AverageAnnualReturnYear05	15.79%
10 Year	rr_AverageAnnualReturnYear10	8.50%

XML

State Farm Small Cap Equity Index Fund

SMALL CAP EQUITY INDEX FUND

Investment Objective:

The Small Cap Equity Index Fund (the “Fund”) seeks to match performance of the Russell 2000^® Small Stock Index (the “Russell 2000”) by investing in some of the stocks found in the Russell 2000.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Small Cap Equity Index Fund State Farm Small Cap Equity Index Fund
Management Fees	0.13%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.10%
Total Annual Fund Operating Expenses	0.23%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Small Cap Equity Index Fund | State Farm Small Cap Equity Index Fund | USD ($)	24	74	130	293

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 12% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests in stocks of companies that are included in the Russell 2000 Small Stock Index (the “Russell 2000 Index”) in a manner that is expected to approximate the performance of the Russell 2000 Index, the benchmark index. The Russell 2000 Index is an index of 2,000 small companies that is created by taking the largest 3,000 companies traded in the U.S and eliminating the largest 1,000 of these companies. Under normal operating conditions, the Fund seeks to invest at least 90% of its net assets in stocks that are represented in the Russell 2000 Index and will at all times invest a substantial portion of its total assets in such stocks. The Fund will invest in stocks that are represented in the Russell 2000 Index in weights that approximate the relative composition of the securities contained in the index.

BlackRock Fund Advisors (the “BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks:

• Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Smaller Company Size Risk.    The securities of small capitalization companies are often more difficult to value or dispose of, more difficult to obtain information about, and more volatile than stocks of larger, more established companies. In addition, the markets for the Fund’s investments may not be actively traded, which increases the risk that the Fund’s investment adviser or sub-adviser may have difficulty selling securities the Fund holds.

• Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly.

• Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (the “Manager” or “SFIM”) or the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid.

• Financial Sector Risk.    The Fund may invest 25% or more of its net assets in securities issued by companies in the financial sector. The market value of securities of issuers in the financial sector can be affected by various factors, such as adverse regulatory or economic occurrences, availability of credit, fluctuations in asset values, unstable interest rates, increased competition, continuing consolidations and development of new products and structures. Furthermore, increased government involvement in financial institutions could adversely impact the value of such institutions.

• Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 20.51%,
                 during the second quarter of 2009.

Worst quarter: -26.13%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Russell 2000 for the 1, 5 and 10-year periods ended 12/31/2017. The Russell 2000 Small Stock Index tracks the common stock performance of the 2,000 smallest U.S. companies in the Russell 3000 Index, which represents approximately 10% of the total capitalization of the Russell 3000 Index. Unlike an investment in the Fund, returns of the Russell 2000 do not reflect expenses of investing.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Small Cap Equity Index Fund	1 Year	5 Year	10 Year
State Farm Small Cap Equity Index Fund	14.55%	13.72%	8.27%
Russell 2000 (Returns reflect no deduction for fees, expenses or taxes.)	14.65%	14.12%	8.71%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Small Cap Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	SMALL CAP EQUITY INDEX FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Small Cap Equity Index Fund (the “Fund”) seeks to match performance of the Russell 2000® Small Stock Index (the “Russell 2000”) by investing in some of the stocks found in the Russell 2000.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 12% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	12.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests in stocks of companies that are included in the Russell 2000 Small Stock Index (the “Russell 2000 Index”) in a manner that is expected to approximate the performance of the Russell 2000 Index, the benchmark index. The Russell 2000 Index is an index of 2,000 small companies that is created by taking the largest 3,000 companies traded in the U.S and eliminating the largest 1,000 of these companies. Under normal operating conditions, the Fund seeks to invest at least 90% of its net assets in stocks that are represented in the Russell 2000 Index and will at all times invest a substantial portion of its total assets in such stocks. The Fund will invest in stocks that are represented in the Russell 2000 Index in weights that approximate the relative composition of the securities contained in the index. BlackRock Fund Advisors (the “BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks: Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Smaller Company Size Risk.    The securities of small capitalization companies are often more difficult to value or dispose of, more difficult to obtain information about, and more volatile than stocks of larger, more established companies. In addition, the markets for the Fund’s investments may not be actively traded, which increases the risk that the Fund’s investment adviser or sub-adviser may have difficulty selling securities the Fund holds. Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly. Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (the “Manager” or “SFIM”) or the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid. Financial Sector Risk.    The Fund may invest 25% or more of its net assets in securities issued by companies in the financial sector. The market value of securities of issuers in the financial sector can be affected by various factors, such as adverse regulatory or economic occurrences, availability of credit, fluctuations in asset values, unstable interest rates, increased competition, continuing consolidations and development of new products and structures. Furthermore, increased government involvement in financial institutions could adversely impact the value of such institutions. Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 20.51%,                  during the second quarter of 2009. Worst quarter: -26.13%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Russell 2000 for the 1, 5 and 10-year periods ended 12/31/2017. The Russell 2000 Small Stock Index tracks the common stock performance of the 2,000 smallest U.S. companies in the Russell 3000 Index, which represents approximately 10% of the total capitalization of the Russell 3000 Index. Unlike an investment in the Fund, returns of the Russell 2000 do not reflect expenses of investing.
State Farm Small Cap Equity Index Fund | State Farm Small Cap Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.13%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.10%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.23%
1 Year	rr_ExpenseExampleYear01	$ 24
3 Years	rr_ExpenseExampleYear03	74
5 Years	rr_ExpenseExampleYear05	130
10 Years	rr_ExpenseExampleYear10	$ 293
2008	rr_AnnualReturn2008	(34.05%)
2009	rr_AnnualReturn2009	26.39%
2010	rr_AnnualReturn2010	26.12%
2011	rr_AnnualReturn2011	(4.53%)
2012	rr_AnnualReturn2012	15.90%
2013	rr_AnnualReturn2013	38.27%
2014	rr_AnnualReturn2014	4.37%
2015	rr_AnnualReturn2015	(4.86%)
2016	rr_AnnualReturn2016	20.96%
2017	rr_AnnualReturn2017	14.55%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	20.51%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(26.13%)
1 Year	rr_AverageAnnualReturnYear01	14.55%
5 Year	rr_AverageAnnualReturnYear05	13.72%
10 Year	rr_AverageAnnualReturnYear10	8.27%
State Farm Small Cap Equity Index Fund | Russell 2000 (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	14.65%
5 Year	rr_AverageAnnualReturnYear05	14.12%
10 Year	rr_AverageAnnualReturnYear10	8.71%

XML

State Farm International Equity Index Fund

INTERNATIONAL EQUITY INDEX FUND

Investment Objective:

The International Equity Index Fund (the “Fund”) seeks to match performance of the MSCI Europe, Australasia, and Far East Free Index (the “EAFE^® Free”) by investing in some of the stocks found in the EAFE Free.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm International Equity Index Fund State Farm International Equity Index Fund
Management Fees	0.15%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.12%
Total Annual Fund Operating Expenses	0.27%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm International Equity Index Fund | State Farm International Equity Index Fund | USD ($)	28	87	152	343

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 4% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests in stocks of companies that are included in the EAFE Free Index in a manner that is expected to approximate the performance of the EAFE Free Index, the benchmark index. The EAFE Free Index is a capitalization-weighted index that currently includes stocks of companies located in 15 European countries, Australia, Israel, New Zealand, Hong Kong, Japan and Singapore. Under normal operating conditions, the Fund seeks to invest at least 90% of its net assets in stocks that are represented in the EAFE Free Index and will at all times invest a substantial portion of its total assets in such stocks. The Fund will invest in stocks that are represented in the EAFE Free Index in weights that approximate the relative composition of the securities contained in the index.

BlackRock Fund Advisors (the “BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks:

• Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly.

• Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (the “Manager” or “SFIM”) or to the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid.

• Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 25.25%,
                 during the second quarter of 2009.

Worst quarter: -20.17%,
                 during the third quarter of 2011.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the EAFE Free for the 1, 5 and 10-year periods ended 12/31/2017. The EAFE Free currently measures the performance of stock markets in Europe, Australia, New Zealand, Israel, Hong Kong, Japan, and Singapore, and takes into account local market restrictions on share ownership by foreigners. The EAFE Free is meant to reflect actual opportunities for foreign investors in a local market. Unlike an investment in the Fund, returns of the EAFE Free do not reflect expenses of investing.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm International Equity Index Fund	1 Year	5 Year	10 Year
State Farm International Equity Index Fund	25.40%	7.32%	1.56%
EAFE Free Index (Returns reflect no deduction for fees, expenses or taxes.)	25.03%	7.90%	1.94%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm International Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	INTERNATIONAL EQUITY INDEX FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Equity Index Fund (the “Fund”) seeks to match performance of the MSCI Europe, Australasia, and Far East Free Index (the “EAFE® Free”) by investing in some of the stocks found in the EAFE Free.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 4% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	4.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests in stocks of companies that are included in the EAFE Free Index in a manner that is expected to approximate the performance of the EAFE Free Index, the benchmark index. The EAFE Free Index is a capitalization-weighted index that currently includes stocks of companies located in 15 European countries, Australia, Israel, New Zealand, Hong Kong, Japan and Singapore. Under normal operating conditions, the Fund seeks to invest at least 90% of its net assets in stocks that are represented in the EAFE Free Index and will at all times invest a substantial portion of its total assets in such stocks. The Fund will invest in stocks that are represented in the EAFE Free Index in weights that approximate the relative composition of the securities contained in the index. BlackRock Fund Advisors (the “BFA”), the sub-adviser to the Fund, may sell securities to reflect security changes within the index or to balance the portfolio to the index. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks: Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that this Fund will succeed in its attempt, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly. Security Selection Risk.    Because securities market indices are developed by persons unrelated to the Fund, State Farm Investment Management Corp. (the “Manager” or “SFIM”) or to the Fund’s sub-adviser, the Fund may hold stocks in companies that present risks that the Manager or the Fund’s sub-adviser researching individual stocks might avoid. Concentration Risk.    The Fund reserves the right to concentrate its investments (i.e., invest 25% or more of its total assets in securities of issuers in a particular industry) to approximately the same extent that the applicable index concentrates in a particular industry. To the extent the Fund concentrates in a particular industry, it may be more susceptible to economic conditions and risks affecting that industry. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 25.25%,                  during the second quarter of 2009. Worst quarter: -20.17%,                  during the third quarter of 2011.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the EAFE Free for the 1, 5 and 10-year periods ended 12/31/2017. The EAFE Free currently measures the performance of stock markets in Europe, Australia, New Zealand, Israel, Hong Kong, Japan, and Singapore, and takes into account local market restrictions on share ownership by foreigners. The EAFE Free is meant to reflect actual opportunities for foreign investors in a local market. Unlike an investment in the Fund, returns of the EAFE Free do not reflect expenses of investing.
State Farm International Equity Index Fund | State Farm International Equity Index Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.15%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.12%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.27%
1 Year	rr_ExpenseExampleYear01	$ 28
3 Years	rr_ExpenseExampleYear03	87
5 Years	rr_ExpenseExampleYear05	152
10 Years	rr_ExpenseExampleYear10	$ 343
2008	rr_AnnualReturn2008	(42.13%)
2009	rr_AnnualReturn2009	28.01%
2010	rr_AnnualReturn2010	7.18%
2011	rr_AnnualReturn2011	(12.50%)
2012	rr_AnnualReturn2012	18.00%
2013	rr_AnnualReturn2013	20.96%
2014	rr_AnnualReturn2014	(5.88%)
2015	rr_AnnualReturn2015	(1.16%)
2016	rr_AnnualReturn2016	0.90%
2017	rr_AnnualReturn2017	25.40%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	25.25%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2011
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(20.17%)
1 Year	rr_AverageAnnualReturnYear01	25.40%
5 Year	rr_AverageAnnualReturnYear05	7.32%
10 Year	rr_AverageAnnualReturnYear10	1.56%
State Farm International Equity Index Fund | EAFE Free Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	25.03%
5 Year	rr_AverageAnnualReturnYear05	7.90%
10 Year	rr_AverageAnnualReturnYear10	1.94%

XML

State Farm Large Cap Equity Fund

LARGE CAP EQUITY FUND

Investment Objective:

The Large Cap Equity Fund (or the “Fund”) seeks long-term growth of capital.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Large Cap Equity Fund State Farm Large Cap Equity Fund
Management Fees	0.60%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.11%
Total Annual Fund Operating Expenses	0.71%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Large Cap Equity Fund | State Farm Large Cap Equity Fund | USD ($)	73	227	395	883

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 55% of the average value of its portfolio.

Principal Investment Strategies

Two different investment sub-advisers, Bridgeway Capital Management, Inc. (“Bridgeway”) and Westwood Management Corp. (“Westwood”), select investments for the Fund. Bridgeway and Westwood each manage approximately one-half of the Fund’s portfolio. State Farm Investment Management Corp. (the “Manager” or “SFIM”) monitors the performance of the sub-advisers and the allocation of the portfolio between the sub-advisers. The principal investment strategies employed by the two sub-advisers for their respective portions of the portfolio are discussed separately below.

Bridgeway

Bridgeway primarily invests its portion of the Fund in a diversified portfolio of large growth stocks. Bridgeway defines “large stocks” as those whose market capitalization (stock market worth) falls within the range of the Russell 1000 Index, an unmanaged, market value weighted index, which measures performance of approximately 1,000 of the largest companies in the market with dividends reinvested. The Russell 1000 Index is reconstituted from time to time. The market capitalization of companies in which Bridgeway may invest may vary with market conditions. Growth stocks are those that Bridgeway believes have above average prospects for economic growth. Bridgeway selects stocks within the large-cap growth category for the Fund using a statistically driven approach. Under normal conditions, at least 80% of Bridgeway’s portion of the Fund’s net assets (plus borrowings for investment purposes) are invested in stocks from among those in the large-cap growth category at the time of purchase. However, Bridgeway will not necessarily sell a stock if it “migrates” to a different category after purchase.

Bridgeway may invest up to 10% of its segment of the Fund’s assets primarily in common stocks and depository receipts of foreign companies.

Westwood

Under normal market conditions, Westwood invests at least 80% of its portion of the Fund’s assets (which includes, for purposes of this test, the amount of any borrowings for investment purposes) primarily in common stocks and other equity securities of large capitalization companies, including foreign companies. Westwood invests in a portfolio of seasoned companies utilizing a value style of investing in which it chooses those stocks that Westwood believes have earnings prospects that are currently undervalued by the market relative to some financial measure of worth, such as the ratio of price to earnings, price to sales or price to cash flow. Westwood defines large capitalization companies as those companies with market capitalizations generally greater than $5 billion at the time of purchase, while seasoned companies generally have been operating for at least three years.

In selecting securities, Westwood maintains a list of approved securities of issuers which it believes have proven records and potential for above-average earnings growth. Westwood considers purchasing a security on such list if Westwood’s forecast for growth rates and earnings for that issuer exceeds Wall Street expectations. Other key metrics for evaluating the risk/return profile of an investment include an improving return on equity, a declining debt to equity ratio and, in the case of common equities, positive earnings surprises without a corresponding increase in Wall Street estimates. Westwood has disciplines in place that serve as sell signals, such as a security reaching a pre-determined price target, and/or a fundamental change that negatively impacts the outlook and original investment thesis. The risk characteristics of Westwood’s portion of the Fund, such as beta (a measure of volatility), are generally expected to be less than those of the S&P 500 Index, the Fund’s benchmark.

Both Bridgeway and Westwood may sell individual securities for several reasons including: investment purpose of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (the “FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks:

• Equity Securities Risk.    Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. Holders of common stock generally are subject to more risks than holders of preferred stock and debt securities because the status of common stockholders upon the bankruptcy of the issuer is subordinated to that of preferred stock and debt holders.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 13.08%,
                 during the first quarter of 2012.

Worst quarter: -24.02%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 Index for the 1, 5 and 10-year periods ended 12/31/2017. The S&P 500 Index is a capitalization-weighted measure of the common stocks of 500 large U.S. companies.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Large Cap Equity Fund	1 Year	5 Year	10 Year
State Farm Large Cap Equity Fund	23.81%	15.86%	7.08%
S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)	21.83%	15.79%	8.50%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Large Cap Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	LARGE CAP EQUITY FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Large Cap Equity Fund (or the “Fund”) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 55% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	55.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Two different investment sub-advisers, Bridgeway Capital Management, Inc. (“Bridgeway”) and Westwood Management Corp. (“Westwood”), select investments for the Fund. Bridgeway and Westwood each manage approximately one-half of the Fund’s portfolio. State Farm Investment Management Corp. (the “Manager” or “SFIM”) monitors the performance of the sub-advisers and the allocation of the portfolio between the sub-advisers. The principal investment strategies employed by the two sub-advisers for their respective portions of the portfolio are discussed separately below. Bridgeway Bridgeway primarily invests its portion of the Fund in a diversified portfolio of large growth stocks. Bridgeway defines “large stocks” as those whose market capitalization (stock market worth) falls within the range of the Russell 1000 Index, an unmanaged, market value weighted index, which measures performance of approximately 1,000 of the largest companies in the market with dividends reinvested. The Russell 1000 Index is reconstituted from time to time. The market capitalization of companies in which Bridgeway may invest may vary with market conditions. Growth stocks are those that Bridgeway believes have above average prospects for economic growth. Bridgeway selects stocks within the large-cap growth category for the Fund using a statistically driven approach. Under normal conditions, at least 80% of Bridgeway’s portion of the Fund’s net assets (plus borrowings for investment purposes) are invested in stocks from among those in the large-cap growth category at the time of purchase. However, Bridgeway will not necessarily sell a stock if it “migrates” to a different category after purchase. Bridgeway may invest up to 10% of its segment of the Fund’s assets primarily in common stocks and depository receipts of foreign companies. Westwood Under normal market conditions, Westwood invests at least 80% of its portion of the Fund’s assets (which includes, for purposes of this test, the amount of any borrowings for investment purposes) primarily in common stocks and other equity securities of large capitalization companies, including foreign companies. Westwood invests in a portfolio of seasoned companies utilizing a value style of investing in which it chooses those stocks that Westwood believes have earnings prospects that are currently undervalued by the market relative to some financial measure of worth, such as the ratio of price to earnings, price to sales or price to cash flow. Westwood defines large capitalization companies as those companies with market capitalizations generally greater than $5 billion at the time of purchase, while seasoned companies generally have been operating for at least three years. In selecting securities, Westwood maintains a list of approved securities of issuers which it believes have proven records and potential for above-average earnings growth. Westwood considers purchasing a security on such list if Westwood’s forecast for growth rates and earnings for that issuer exceeds Wall Street expectations. Other key metrics for evaluating the risk/return profile of an investment include an improving return on equity, a declining debt to equity ratio and, in the case of common equities, positive earnings surprises without a corresponding increase in Wall Street estimates. Westwood has disciplines in place that serve as sell signals, such as a security reaching a pre-determined price target, and/or a fundamental change that negatively impacts the outlook and original investment thesis. The risk characteristics of Westwood’s portion of the Fund, such as beta (a measure of volatility), are generally expected to be less than those of the S&P 500 Index, the Fund’s benchmark. Both Bridgeway and Westwood may sell individual securities for several reasons including: investment purpose of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (the “FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks: Equity Securities Risk.    Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. Holders of common stock generally are subject to more risks than holders of preferred stock and debt securities because the status of common stockholders upon the bankruptcy of the issuer is subordinated to that of preferred stock and debt holders. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (the “FDIC”) or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 13.08%,                  during the first quarter of 2012. Worst quarter: -24.02%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 Index for the 1, 5 and 10-year periods ended 12/31/2017. The S&P 500 Index is a capitalization-weighted measure of the common stocks of 500 large U.S. companies.
State Farm Large Cap Equity Fund | State Farm Large Cap Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.60%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.11%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.71%
1 Year	rr_ExpenseExampleYear01	$ 73
3 Years	rr_ExpenseExampleYear03	227
5 Years	rr_ExpenseExampleYear05	395
10 Years	rr_ExpenseExampleYear10	$ 883
2008	rr_AnnualReturn2008	(41.12%)
2009	rr_AnnualReturn2009	21.84%
2010	rr_AnnualReturn2010	13.55%
2011	rr_AnnualReturn2011	(0.12%)
2012	rr_AnnualReturn2012	16.63%
2013	rr_AnnualReturn2013	33.33%
2014	rr_AnnualReturn2014	15.75%
2015	rr_AnnualReturn2015	1.33%
2016	rr_AnnualReturn2016	7.83%
2017	rr_AnnualReturn2017	23.81%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2012
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	13.08%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(24.02%)
1 Year	rr_AverageAnnualReturnYear01	23.81%
5 Year	rr_AverageAnnualReturnYear05	15.86%
10 Year	rr_AverageAnnualReturnYear10	7.08%
State Farm Large Cap Equity Fund | S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	21.83%
5 Year	rr_AverageAnnualReturnYear05	15.79%
10 Year	rr_AverageAnnualReturnYear10	8.50%

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State Farm Small Mid Cap Equity Fund

SMALL/MID CAP EQUITY FUND

Investment Objective:

The Small/Mid Cap Equity Fund (or the “Fund”) seeks long-term growth of capital.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Small Mid Cap Equity Fund State Farm Small Mid Cap Equity Fund
Management Fees	0.80%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.12%
Acquired Fund Fees & Expenses	0.03%	[1]
Total Annual Fund Operating Expenses	0.95%
Less: Fee Waiver	(0.29%)
Total Annual Fund Operating Expenses after Fee Waiver	0.66%	[2]

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses are equal to the Total Annual Fund Operating Expenses after Fee Waiver in the first year, and the Total Annual Fund Operating Expenses for periods thereafter. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Small Mid Cap Equity Fund | State Farm Small Mid Cap Equity Fund | USD ($)	67	274	497	1,140

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 96% of the average value of its portfolio.

Principal Investment Strategies

State Farm Investment Management Corp. (the “Manager” or “SFIM”) has hired Bridgeway Capital Management, Inc. (“Bridgeway”) to select investments for approximately one-half of the Small/Mid Cap Equity Fund’s portfolio. The Manager monitors the performance of Bridgeway and the allocation of the Small/Mid Cap Equity Fund’s portfolio to Bridgeway. The Manager invests the other one-half of the Small/Mid Cap Equity Fund’s portfolio in shares of the iShares Core S&P Mid-Cap ETF, ticker symbol IJH, an exchange traded fund advised by BlackRock Fund Advisors (“BFA”). The iShares Core S&P Mid-Cap EFT seeks to track the investment results of the S&P Mid-Cap 400^® (the “Underlying Index”). The Underlying Index measures the performance of the mid-capitalization sector of the U.S. equity market. The principal investment strategies employed by Bridgeway for its portion of the Small/Mid Cap Equity Fund’s portfolio and the principal investment strategies of BFA in managing the iShares Core S&P Mid-Cap ETF are discussed separately below.

Bridgeway

Bridgeway primarily invests its segment of the Fund in a diversified portfolio of small capitalization stocks. Bridgeway defines “small stocks” as those whose market capitalization (stock market value) falls within the range of the Russell 2000 Index, an unmanaged, market value weighted index, which measures performance of approximately 2,000 companies that are between the 1,000th and 3,000th largest in the market with dividends reinvested. The Russell 2000 Index is reconstituted from time to time. The market capitalization of companies in which Bridgeway may invest may vary with market conditions. Bridgeway selects stocks using a statistically driven approach.

Bridgeway invests in small capitalization stocks in the “value” category, which it defines as those stocks that Bridgeway believes are priced cheaply relative to some financial measures of worth, such as the ratio of price to earnings, price to sales or price to cash flow. Under normal conditions, at least 80% of Bridgeway’s portion of the Fund’s net assets (plus borrowings for investment purposes) is invested in stocks from among those in the small cap value category at the time of purchase. However, Bridgeway will not necessarily sell a stock if it “migrates” to a different category after purchase.

Bridgeway may invest up to 10% of its segment of the Fund’s assets primarily in common stocks and depository receipts of foreign companies.

Bridgeway may sell individual securities for several reasons including: the investment purpose of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

The Manager’s Investment of Fund Assets in the iShares Core S&P Mid-Cap ETF

The Manager invests approximately one-half of the Small/Mid Cap Equity Fund’s portfolio in shares of the iShares Core S&P Mid-Cap ETF. The following discussion relates to the principal investment strategies of the iShares Core S&P Mid-Cap ETF.

The iShares Core S&P Mid-Cap ETF seeks to track the investment results of the Underlying Index, which measures the performance of the mid-capitalization sector of the U.S. equity market. As of March 30, 2018, the Underlying Index included approximately 6.23% of the market capitalization of all U.S. equity securities. As of March 30, 2018, the stocks in the Underlying Index have a market capitalization between $1.6 billion and $6.8 billion at time of entry, which may fluctuate depending on the overall level of the equity markets, and are selected for liquidity and industry group representation. The Underlying Index consists of stocks from a broad range of industries. Components primarily include financials, industrials and information technology companies. The components of the Underlying Index, and the degree to which these components represent certain industries, are likely to change over time.

BFA uses a “passive” or indexing approach to try to achieve the iShares Core S&P Mid-Cap ETF’s investment objective. Unlike many investment companies, the iShares Core S&P Mid-Cap ETF does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.

Indexing may eliminate the chance that the iShares Core S&P Mid-Cap ETF will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by keeping portfolio turnover low in comparison to actively managed investment companies.

BFA uses a representative sampling indexing strategy to manage the iShares Core S&P Mid-Cap ETF. Representative sampling is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the Underlying Index. The iShares Core S&P Mid-Cap ETF may or may not hold all of the securities in the Underlying Index.

The iShares Core S&P Mid-Cap ETF generally invests at least 90% of its assets in securities of the Underlying Index and in depositary receipts representing securities of the Underlying Index. The iShares Core S&P Mid-Cap ETF may invest the remainder of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, as well as in securities not included in the Underlying Index, but which BFA believes will help the iShares Core S&P Mid-Cap ETF track the Underlying Index. The iShares Core S&P Mid-Cap ETF seeks to track the investment results of the Underlying Index before fees and expenses of the iShares Core S&P Mid-Cap ETF.

The iShares Core S&P Mid-Cap ETF may lend securities representing up to one-third of the value of the iShares Core S&P Mid-Cap ETF’s total assets (including the value of any collateral received).

The Underlying Index is a product of S&P Dow Jones Indices LLC (the “Index Provider” or “SPDJI”), which is independent of the iShares Core S&P Mid-Cap ETF and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

Industry Concentration Policy.    The iShares Core S&P Mid-Cap ETF will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks:

Underlying Fund Risk.    Because it invests approximately 50% of its assets in the iShares Core S&P Mid-Cap ETF, the Fund’s investment performance significantly depends on the investment performance of that underlying ETF. An investment in the Fund is subject to the risks associated with the iShares Core S&P Mid-Cap ETF. In particular, the Fund may be subject to the following risks as a result of its investment in the iShares Core S&P Mid-Cap ETF:

• Asset Class Risk.    Securities and other assets in the Underlying Index or in the iShares Core S&P Mid-Cap ETF’s portfolio may underperform in comparison to the general financial markets, a particular financial market or other asset classes.

• Assets under Management (AUM) Risk.    From time to time, an Authorized Participant (as defined in the Creations and Redemptions section of the iShares Core S&P Mid-Cap ETF’s prospectus), a third party investor, the iShares Core S&P Mid-Cap ETF investment adviser or any affiliate of the iShares Core S&P Mid-Cap ETF investment adviser, or a fund may invest in the iShares Core S&P Mid-Cap ETF and hold its investment for a specific period of time in order to facilitate commencement of the iShares Core S&P Mid-Cap ETF’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the iShares Core S&P Mid-Cap ETF would be maintained at such levels, which could negatively impact the iShares Core S&P Mid-Cap ETF.

• Authorized Participant Concentration Risk.    Only an Authorized Participant may engage in creation or redemption transactions directly with the iShares Core S&P Mid-Cap ETF. The iShares Core S&P Mid-Cap ETF has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with respect to the iShares Core S&P Mid-Cap ETF and no other Authorized Participant is able to step forward to create or redeem Creation Units (as defined in the Purchase and Sale of iShares Core S&P Mid-Cap ETF Shares section of the iShares Core S&P Mid-Cap ETF’s Prospectus), iShares Core S&P Mid-Cap ETF shares may be more likely to trade at a premium or discount to net asset value (“NAV”) and possibly face trading halts and/or delisting.

• Concentration Risk.    The iShares Core S&P Mid-Cap ETF may be susceptible to an increased risk of loss, including losses due to adverse events that affect the iShares Core S&P Mid-Cap ETF’s investments more than the market as a whole, to the extent that the iShares Core S&P Mid-Cap ETF’s investments are concentrated in the securities of a particular issuer or issuers, country, group of countries, region, market, industry, group of industries, sector or asset class.

• Cyber Security Risk.    Failures or breaches of the electronic systems of the iShares Core S&P Mid-Cap ETF, the iShares Core S&P Mid-Cap ETF’s investment adviser, distributor, and other service providers, market makers, Authorized Participants or the issuers of securities in which the iShares Core S&P Mid-Cap ETF invests have the ability to cause disruptions and negatively impact the iShares Core S&P Mid-Cap ETF’s business operations, potentially resulting in financial losses to the iShares Core S&P Mid-Cap ETF and its shareholders. While the iShares Core S&P Mid-Cap ETF has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherent limitations in such plans and systems. Furthermore the iShares Core S&P Mid-Cap ETF cannot control the cyber security plans and systems of the iShares Core S&P Mid-Cap ETF’s service providers, the Index Provider, market makers, Authorized Participants or issuers of securities in which the iShares Core S&P Mid-Cap ETF invests.

• Index-Related Risk.    There is no guarantee that the iShares Core S&P Mid-Cap ETF will achieve a high degree of correlation to the Underlying Index and therefore achieve its investment objective. Market disruptions and regulatory restrictions could have an adverse effect on the iShares Core S&P Mid-Cap ETF’s ability to adjust its exposure to the required levels in order to track the Underlying Index. Errors in index data, index computations and/or the construction of the Underlying Index in accordance with its methodology may occur from time to time and may not be identified and corrected by the Index Provider for a period of time or at all, which may have an adverse impact on the iShares Core S&P Mid-Cap ETF and its shareholders.

• Management Risk.    As the iShares Core S&P Mid-Cap ETF may not fully replicate the Underlying Index, and it is subject to the risk that the iShares Core S&P Mid-Cap ETF‘s investment strategy may not produce the intended results.

• Market Trading Risk.    The iShares Core S&P Mid-Cap ETF faces numerous market trading risks, including the potential lack of an active market for iShares Core S&P Mid-Cap ETF shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the iShares Core S&P Mid-Cap ETF’s shares trading at a premium or discount to net asset value.

• Operational Risk.    The iShares Core S&P Mid-Cap ETF is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the iShares Core S&P Mid-Cap ETF’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The iShares Core S&P Mid-Cap ETF and its investment adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

• Passive Investment Risk.    The iShares Core S&P Mid-Cap ETF is not actively managed and generally does not attempt to take defensive positions under any market conditions, including declining markets.

• Securities Lending Risk.    The iShares Core S&P Mid-Cap ETF may engage in securities lending. Securities lending involves the risk that the iShares Core S&P Mid-Cap ETF may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The iShares Core S&P Mid-Cap ETF could also lose money in the event of a decline in the value of collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the iShares Core S&P Mid-Cap ETF.

• Tracking Error Risk.    Tracking error is the divergence of the iShares Core S&P Mid-Cap ETF’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities and other instruments held in the iShares Core S&P Mid-Cap ETF’s portfolio and those included in the Underlying Index, pricing differences (including differences between a security’s price at the local market close and the iShares Core S&P Mid-Cap ETF’s valuation of a security at the time of calculation of the iShares Core S&P Mid-Cap ETF’s NAV), transaction costs, the iShares Core S&P Mid-Cap ETF’s holding of uninvested cash, differences in timing of the accrual of or the valuation of dividends or interest, tax gains or losses, changes to the Underlying Index or the costs of complying with various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because the iShares Core S&P Mid-Cap ETF incurs fees and expenses, while the Underlying Index does not.

Fund Risk.    The Fund as a whole is subject to the following risks:

• Equity Securities Risk.    Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. Holders of common stock generally are subject to more risks than holders of preferred stock and debt securities because the status of common stockholders upon the bankruptcy of the issuer is subordinated to that of preferred stock and debt holders.

• Financials Sector Risk.    Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. The impact of more stringent capital requirements, recent or future regulation of any individual financial company, or recent or future regulation of the financials sector as a whole cannot be predicted. In recent years, cyber-attacks and technology malfunctions have become increasingly frequent in this sector and have caused significant losses to companies in this sector, which may negatively impact the Fund.

• Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market.

• Industrials Sector Risk.    The industrials sector may be adversely affected by changes in the supply of and demand for products and services, product obsolescence, claims for environmental damage or product liability and general economic conditions, among other factors.

• Information Technology Sector Risk.    Information technology companies face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of those rights.

• Issuer Risk.    Fund performance depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the securities to decline.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Mid-Capitalization Companies Risk.    Investments and securities of mid-cap companies may involve greater risk of loss than investing in larger, more established companies. Mid-cap companies may have limited product lines, markets or financial resources and less seasoned management teams and may trade less frequently at a lower volume than more widely held securities. The prices of mid-cap companies’ stock tend to fluctuate in value more than those of larger capitalization stocks.

• Risk of Investing in Developed Countries.    The Fund’s investment in a developed country issuer may subject the Fund to regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some less developed countries. In addition, developed countries may be impacted by changes to the economic conditions of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.

• Risk of Investing in the United States.    The Fund has significant exposure to U.S. issuers. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure.

• Smaller Company Size Risk.    The securities of smaller capitalization companies are often more difficult to value or dispose of, more difficult to obtain information about, and more volatile than stocks of larger, more established companies. In addition, the markets for the Fund’s investments may not be actively traded, which increases the risk that the Fund’s investment adviser or sub-adviser may have difficulty selling securities the Fund holds.

• Investment Company Securities Risk.    The Fund invests in securities of other open-end investment companies. The risks of investments in other investment companies typically reflect the risks of the types of securities in which those underlying funds invest. When the Fund invests in another investment company, shareholders of the Fund bear their proportionate share of the other investment company’s fees and expenses as well as their share of the Fund’s fees and expenses.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). Prior to May 1, 2017, the portion of the Fund’s assets invested in the iShares Core S&P Mid-Cap ETF were invested directly in equity securities pursuant to a different investment strategy. The returns in the bar chart and table below show how the Fund performed using the previous investment strategy.

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 19.06%,
                 during the second quarter of 2009.

Worst quarter: -29.32%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Russell 2500 Index for the 1, 5 and 10-year periods ended 12/31/2017. The Russell 2500 Index measures the performance of the 2,500 smallest securities in the Russell 3000 Index, which represents approximately 20% of the total market capitalization of the Russell 3000 Index. Unlike an investment in the Fund, a theoretical investment in the Index does not reflect any expenses. It is not possible to invest directly in an index.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Small Mid Cap Equity Fund	1 Year	5 Year	10 Year
State Farm Small Mid Cap Equity Fund	11.79%	11.43%	5.72%
Russell 2500 Index (Returns reflect no deduction for fees, expenses or taxes.)	16.81%	14.33%	9.22%

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

[2] State Farm Investment Management Corp. (“SFIM”), the investment adviser to the Fund, has contractually agreed to waive 0.29% of management fees for the Small/Mid Cap Equity Fund. This fee waiver applies through April 30, 2019, and SFIM may not discontinue or modify this waiver without the approval of the Board of Trustees of State Farm Variable Product Trust.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Small Mid Cap Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	SMALL/MID CAP EQUITY FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Small/Mid Cap Equity Fund (or the “Fund”) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	April 30, 2019
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 96% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	96.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses are equal to the Total Annual Fund Operating Expenses after Fee Waiver in the first year, and the Total Annual Fund Operating Expenses for periods thereafter. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	State Farm Investment Management Corp. (the “Manager” or “SFIM”) has hired Bridgeway Capital Management, Inc. (“Bridgeway”) to select investments for approximately one-half of the Small/Mid Cap Equity Fund’s portfolio. The Manager monitors the performance of Bridgeway and the allocation of the Small/Mid Cap Equity Fund’s portfolio to Bridgeway. The Manager invests the other one-half of the Small/Mid Cap Equity Fund’s portfolio in shares of the iShares Core S&P Mid-Cap ETF, ticker symbol IJH, an exchange traded fund advised by BlackRock Fund Advisors (“BFA”). The iShares Core S&P Mid-Cap EFT seeks to track the investment results of the S&P Mid-Cap 400® (the “Underlying Index”). The Underlying Index measures the performance of the mid-capitalization sector of the U.S. equity market. The principal investment strategies employed by Bridgeway for its portion of the Small/Mid Cap Equity Fund’s portfolio and the principal investment strategies of BFA in managing the iShares Core S&P Mid-Cap ETF are discussed separately below. Bridgeway Bridgeway primarily invests its segment of the Fund in a diversified portfolio of small capitalization stocks. Bridgeway defines “small stocks” as those whose market capitalization (stock market value) falls within the range of the Russell 2000 Index, an unmanaged, market value weighted index, which measures performance of approximately 2,000 companies that are between the 1,000th and 3,000th largest in the market with dividends reinvested. The Russell 2000 Index is reconstituted from time to time. The market capitalization of companies in which Bridgeway may invest may vary with market conditions. Bridgeway selects stocks using a statistically driven approach. Bridgeway invests in small capitalization stocks in the “value” category, which it defines as those stocks that Bridgeway believes are priced cheaply relative to some financial measures of worth, such as the ratio of price to earnings, price to sales or price to cash flow. Under normal conditions, at least 80% of Bridgeway’s portion of the Fund’s net assets (plus borrowings for investment purposes) is invested in stocks from among those in the small cap value category at the time of purchase. However, Bridgeway will not necessarily sell a stock if it “migrates” to a different category after purchase. Bridgeway may invest up to 10% of its segment of the Fund’s assets primarily in common stocks and depository receipts of foreign companies. Bridgeway may sell individual securities for several reasons including: the investment purpose of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations. The Manager’s Investment of Fund Assets in the iShares Core S&P Mid-Cap ETF The Manager invests approximately one-half of the Small/Mid Cap Equity Fund’s portfolio in shares of the iShares Core S&P Mid-Cap ETF. The following discussion relates to the principal investment strategies of the iShares Core S&P Mid-Cap ETF. The iShares Core S&P Mid-Cap ETF seeks to track the investment results of the Underlying Index, which measures the performance of the mid-capitalization sector of the U.S. equity market. As of March 30, 2018, the Underlying Index included approximately 6.23% of the market capitalization of all U.S. equity securities. As of March 30, 2018, the stocks in the Underlying Index have a market capitalization between $1.6 billion and $6.8 billion at time of entry, which may fluctuate depending on the overall level of the equity markets, and are selected for liquidity and industry group representation. The Underlying Index consists of stocks from a broad range of industries. Components primarily include financials, industrials and information technology companies. The components of the Underlying Index, and the degree to which these components represent certain industries, are likely to change over time. BFA uses a “passive” or indexing approach to try to achieve the iShares Core S&P Mid-Cap ETF’s investment objective. Unlike many investment companies, the iShares Core S&P Mid-Cap ETF does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued. Indexing may eliminate the chance that the iShares Core S&P Mid-Cap ETF will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by keeping portfolio turnover low in comparison to actively managed investment companies. BFA uses a representative sampling indexing strategy to manage the iShares Core S&P Mid-Cap ETF. Representative sampling is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the Underlying Index. The iShares Core S&P Mid-Cap ETF may or may not hold all of the securities in the Underlying Index. The iShares Core S&P Mid-Cap ETF generally invests at least 90% of its assets in securities of the Underlying Index and in depositary receipts representing securities of the Underlying Index. The iShares Core S&P Mid-Cap ETF may invest the remainder of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, as well as in securities not included in the Underlying Index, but which BFA believes will help the iShares Core S&P Mid-Cap ETF track the Underlying Index. The iShares Core S&P Mid-Cap ETF seeks to track the investment results of the Underlying Index before fees and expenses of the iShares Core S&P Mid-Cap ETF. The iShares Core S&P Mid-Cap ETF may lend securities representing up to one-third of the value of the iShares Core S&P Mid-Cap ETF’s total assets (including the value of any collateral received). The Underlying Index is a product of S&P Dow Jones Indices LLC (the “Index Provider” or “SPDJI”), which is independent of the iShares Core S&P Mid-Cap ETF and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. Industry Concentration Policy.    The iShares Core S&P Mid-Cap ETF will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.
Strategy Portfolio Concentration [Text]	rr_StrategyPortfolioConcentration	Industry Concentration Policy.    The iShares Core S&P Mid-Cap ETF will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks: Underlying Fund Risk.    Because it invests approximately 50% of its assets in the iShares Core S&P Mid-Cap ETF, the Fund’s investment performance significantly depends on the investment performance of that underlying ETF. An investment in the Fund is subject to the risks associated with the iShares Core S&P Mid-Cap ETF. In particular, the Fund may be subject to the following risks as a result of its investment in the iShares Core S&P Mid-Cap ETF: Asset Class Risk.    Securities and other assets in the Underlying Index or in the iShares Core S&P Mid-Cap ETF’s portfolio may underperform in comparison to the general financial markets, a particular financial market or other asset classes. Assets under Management (AUM) Risk.    From time to time, an Authorized Participant (as defined in the Creations and Redemptions section of the iShares Core S&P Mid-Cap ETF’s prospectus), a third party investor, the iShares Core S&P Mid-Cap ETF investment adviser or any affiliate of the iShares Core S&P Mid-Cap ETF investment adviser, or a fund may invest in the iShares Core S&P Mid-Cap ETF and hold its investment for a specific period of time in order to facilitate commencement of the iShares Core S&P Mid-Cap ETF’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the iShares Core S&P Mid-Cap ETF would be maintained at such levels, which could negatively impact the iShares Core S&P Mid-Cap ETF. Authorized Participant Concentration Risk.    Only an Authorized Participant may engage in creation or redemption transactions directly with the iShares Core S&P Mid-Cap ETF. The iShares Core S&P Mid-Cap ETF has a limited number of institutions that may act as Authorized Participants on an agency basis (i.e., on behalf of other market participants). To the extent that Authorized Participants exit the business or are unable to proceed with creation and/or redemption orders with respect to the iShares Core S&P Mid-Cap ETF and no other Authorized Participant is able to step forward to create or redeem Creation Units (as defined in the Purchase and Sale of iShares Core S&P Mid-Cap ETF Shares section of the iShares Core S&P Mid-Cap ETF’s Prospectus), iShares Core S&P Mid-Cap ETF shares may be more likely to trade at a premium or discount to net asset value (“NAV”) and possibly face trading halts and/or delisting. Concentration Risk.    The iShares Core S&P Mid-Cap ETF may be susceptible to an increased risk of loss, including losses due to adverse events that affect the iShares Core S&P Mid-Cap ETF’s investments more than the market as a whole, to the extent that the iShares Core S&P Mid-Cap ETF’s investments are concentrated in the securities of a particular issuer or issuers, country, group of countries, region, market, industry, group of industries, sector or asset class. Cyber Security Risk.    Failures or breaches of the electronic systems of the iShares Core S&P Mid-Cap ETF, the iShares Core S&P Mid-Cap ETF’s investment adviser, distributor, and other service providers, market makers, Authorized Participants or the issuers of securities in which the iShares Core S&P Mid-Cap ETF invests have the ability to cause disruptions and negatively impact the iShares Core S&P Mid-Cap ETF’s business operations, potentially resulting in financial losses to the iShares Core S&P Mid-Cap ETF and its shareholders. While the iShares Core S&P Mid-Cap ETF has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherent limitations in such plans and systems. Furthermore the iShares Core S&P Mid-Cap ETF cannot control the cyber security plans and systems of the iShares Core S&P Mid-Cap ETF’s service providers, the Index Provider, market makers, Authorized Participants or issuers of securities in which the iShares Core S&P Mid-Cap ETF invests. Index-Related Risk.    There is no guarantee that the iShares Core S&P Mid-Cap ETF will achieve a high degree of correlation to the Underlying Index and therefore achieve its investment objective. Market disruptions and regulatory restrictions could have an adverse effect on the iShares Core S&P Mid-Cap ETF’s ability to adjust its exposure to the required levels in order to track the Underlying Index. Errors in index data, index computations and/or the construction of the Underlying Index in accordance with its methodology may occur from time to time and may not be identified and corrected by the Index Provider for a period of time or at all, which may have an adverse impact on the iShares Core S&P Mid-Cap ETF and its shareholders. Management Risk.    As the iShares Core S&P Mid-Cap ETF may not fully replicate the Underlying Index, and it is subject to the risk that the iShares Core S&P Mid-Cap ETF‘s investment strategy may not produce the intended results. Market Trading Risk.    The iShares Core S&P Mid-Cap ETF faces numerous market trading risks, including the potential lack of an active market for iShares Core S&P Mid-Cap ETF shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. Any of these factors, among others, may lead to the iShares Core S&P Mid-Cap ETF’s shares trading at a premium or discount to net asset value. Operational Risk.    The iShares Core S&P Mid-Cap ETF is exposed to operational risks arising from a number of factors, including, but not limited to, human error, processing and communication errors, errors of the iShares Core S&P Mid-Cap ETF’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The iShares Core S&P Mid-Cap ETF and its investment adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks. Passive Investment Risk.    The iShares Core S&P Mid-Cap ETF is not actively managed and generally does not attempt to take defensive positions under any market conditions, including declining markets. Securities Lending Risk.    The iShares Core S&P Mid-Cap ETF may engage in securities lending. Securities lending involves the risk that the iShares Core S&P Mid-Cap ETF may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The iShares Core S&P Mid-Cap ETF could also lose money in the event of a decline in the value of collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the iShares Core S&P Mid-Cap ETF. Tracking Error Risk.    Tracking error is the divergence of the iShares Core S&P Mid-Cap ETF’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities and other instruments held in the iShares Core S&P Mid-Cap ETF’s portfolio and those included in the Underlying Index, pricing differences (including differences between a security’s price at the local market close and the iShares Core S&P Mid-Cap ETF’s valuation of a security at the time of calculation of the iShares Core S&P Mid-Cap ETF’s NAV), transaction costs, the iShares Core S&P Mid-Cap ETF’s holding of uninvested cash, differences in timing of the accrual of or the valuation of dividends or interest, tax gains or losses, changes to the Underlying Index or the costs of complying with various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because the iShares Core S&P Mid-Cap ETF incurs fees and expenses, while the Underlying Index does not. Fund Risk.    The Fund as a whole is subject to the following risks: Equity Securities Risk.    Equity securities are subject to changes in value, and their values may be more volatile than those of other asset classes. Holders of common stock generally are subject to more risks than holders of preferred stock and debt securities because the status of common stockholders upon the bankruptcy of the issuer is subordinated to that of preferred stock and debt holders. Financials Sector Risk.    Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. The impact of more stringent capital requirements, recent or future regulation of any individual financial company, or recent or future regulation of the financials sector as a whole cannot be predicted. In recent years, cyber-attacks and technology malfunctions have become increasingly frequent in this sector and have caused significant losses to companies in this sector, which may negatively impact the Fund. Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market. Industrials Sector Risk.    The industrials sector may be adversely affected by changes in the supply of and demand for products and services, product obsolescence, claims for environmental damage or product liability and general economic conditions, among other factors. Information Technology Sector Risk.    Information technology companies face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by the loss or impairment of those rights. Issuer Risk.    Fund performance depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the securities to decline. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Mid-Capitalization Companies Risk.    Investments and securities of mid-cap companies may involve greater risk of loss than investing in larger, more established companies. Mid-cap companies may have limited product lines, markets or financial resources and less seasoned management teams and may trade less frequently at a lower volume than more widely held securities. The prices of mid-cap companies’ stock tend to fluctuate in value more than those of larger capitalization stocks. Risk of Investing in Developed Countries.    The Fund’s investment in a developed country issuer may subject the Fund to regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some less developed countries. In addition, developed countries may be impacted by changes to the economic conditions of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities. Risk of Investing in the United States.    The Fund has significant exposure to U.S. issuers. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure. Smaller Company Size Risk.    The securities of smaller capitalization companies are often more difficult to value or dispose of, more difficult to obtain information about, and more volatile than stocks of larger, more established companies. In addition, the markets for the Fund’s investments may not be actively traded, which increases the risk that the Fund’s investment adviser or sub-adviser may have difficulty selling securities the Fund holds. Investment Company Securities Risk.    The Fund invests in securities of other open-end investment companies. The risks of investments in other investment companies typically reflect the risks of the types of securities in which those underlying funds invest. When the Fund invests in another investment company, shareholders of the Fund bear their proportionate share of the other investment company’s fees and expenses as well as their share of the Fund’s fees and expenses. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). Prior to May 1, 2017, the portion of the Fund’s assets invested in the iShares Core S&P Mid-Cap ETF were invested directly in equity securities pursuant to a different investment strategy. The returns in the bar chart and table below show how the Fund performed using the previous investment strategy. The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 19.06%,                  during the second quarter of 2009. Worst quarter: -29.32%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Russell 2500 Index for the 1, 5 and 10-year periods ended 12/31/2017. The Russell 2500 Index measures the performance of the 2,500 smallest securities in the Russell 3000 Index, which represents approximately 20% of the total market capitalization of the Russell 3000 Index. Unlike an investment in the Fund, a theoretical investment in the Index does not reflect any expenses. It is not possible to invest directly in an index.
State Farm Small Mid Cap Equity Fund | State Farm Small Mid Cap Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.12%
Acquired Fund Fees & Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.03%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.95%
Less: Fee Waiver	rr_FeeWaiverOrReimbursementOverAssets	(0.29%)
Total Annual Fund Operating Expenses after Fee Waiver	rr_NetExpensesOverAssets	0.66%	[2]
1 Year	rr_ExpenseExampleYear01	$ 67
3 Years	rr_ExpenseExampleYear03	274
5 Years	rr_ExpenseExampleYear05	497
10 Years	rr_ExpenseExampleYear10	$ 1,140
2008	rr_AnnualReturn2008	(45.36%)
2009	rr_AnnualReturn2009	30.12%
2010	rr_AnnualReturn2010	23.89%
2011	rr_AnnualReturn2011	(2.08%)
2012	rr_AnnualReturn2012	17.77%
2013	rr_AnnualReturn2013	34.96%
2014	rr_AnnualReturn2014	4.94%
2015	rr_AnnualReturn2015	(3.99%)
2016	rr_AnnualReturn2016	13.01%
2017	rr_AnnualReturn2017	11.79%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	19.06%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(29.32%)
1 Year	rr_AverageAnnualReturnYear01	11.79%
5 Year	rr_AverageAnnualReturnYear05	11.43%
10 Year	rr_AverageAnnualReturnYear10	5.72%
State Farm Small Mid Cap Equity Fund | Russell 2500 Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	16.81%
5 Year	rr_AverageAnnualReturnYear05	14.33%
10 Year	rr_AverageAnnualReturnYear10	9.22%

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

[2] State Farm Investment Management Corp. (“SFIM”), the investment adviser to the Fund, has contractually agreed to waive 0.29% of management fees for the Small/Mid Cap Equity Fund. This fee waiver applies through April 30, 2019, and SFIM may not discontinue or modify this waiver without the approval of the Board of Trustees of State Farm Variable Product Trust.

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State Farm International Equity Fund

INTERNATIONAL EQUITY FUND

Investment Objective:

The International Equity Fund (the “Fund”) seeks long-term growth of capital.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm International Equity Fund State Farm International Equity Fund
Management Fees	0.80%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.33%
Total Annual Fund Operating Expenses	1.13%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm International Equity Fund | State Farm International Equity Fund | USD ($)	115	359	622	1,375

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 46% of the average value of its portfolio.

Principal Investment Strategies

Two different investment sub-advisers, Marsico Capital Management, LLC (“Marsico”) and Northern Cross, LLC (“Northern Cross”), select investments for the Fund. Marsico and Northern Cross each manage approximately one-half of the Fund’s portfolio. State Farm Investment Management Corp. (the “Manager” or “SFIM”) monitors the performance of the sub-advisers and the split of the portfolio between the sub-advisers. The principal investment strategies employed by the two sub-advisers for their respective portions of the portfolio are discussed separately below.

Marsico

Marsico invests its portion of the Fund primarily in common stock of foreign companies that it selects for their long-term growth potential. Marsico may invest its portion of the Fund in an unlimited number of companies of any size throughout the world, and normally invests in the securities of issuers that are economically tied to at least four different foreign countries. The Fund may invest in securities of companies economically tied to emerging markets. Some issuers of securities in the Fund’s portfolio may be based in or economically tied to the U.S. In selecting investments for the Fund, Marsico uses an approach that combines ‘top-down’ macro-economic analysis that focuses on broad financial and economic indicators with ‘bottom-up’ stock selection that initially focuses on individual stocks.

Marsico may sell individual securities for several reasons including: price target of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Northern Cross

Northern Cross invests its portion of the Fund in securities issued by foreign companies which it believes have the potential for long term margin expansion. Northern Cross primarily focuses on common stocks priced cheaply relative to some financial measure of worth, such as ratios of price to earnings, price to sales or price to cash flow. Under normal market conditions Northern Cross will invest its portion of the Fund in 60-80 companies with a diversified representation of sectors. In selecting securities for the Fund, Northern Cross gives careful consideration to currency, political stability and other effects of international investing.

Northern Cross may sell individual securities for several reasons including: full valuation of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks:

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market.

• Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 25.61%,
                 during the second quarter of 2009.

Worst quarter: -23.84%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Morgan Stanley Capital International All Country World Index (ex-U.S.) (the “MSCI ACWI ex-U.S. Index”) for the 1, 5 and 10-year periods ended 12/31/2017. MSCI ACWI ex-U.S. Index is a free float adjusted market capitalization index that is designed to measure equity market performance in global developed and emerging markets, excluding the United States.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm International Equity Fund	1 Year	5 Year	10 Year
State Farm International Equity Fund	34.35%	7.13%	1.73%
MSCI ACWI ex-US Index (Returns reflect no deduction for fees, expenses or taxes.)	27.19%	6.80%	1.84%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm International Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	INTERNATIONAL EQUITY FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The International Equity Fund (the “Fund”) seeks long-term growth of capital.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 46% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	46.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Two different investment sub-advisers, Marsico Capital Management, LLC (“Marsico”) and Northern Cross, LLC (“Northern Cross”), select investments for the Fund. Marsico and Northern Cross each manage approximately one-half of the Fund’s portfolio. State Farm Investment Management Corp. (the “Manager” or “SFIM”) monitors the performance of the sub-advisers and the split of the portfolio between the sub-advisers. The principal investment strategies employed by the two sub-advisers for their respective portions of the portfolio are discussed separately below. Marsico Marsico invests its portion of the Fund primarily in common stock of foreign companies that it selects for their long-term growth potential. Marsico may invest its portion of the Fund in an unlimited number of companies of any size throughout the world, and normally invests in the securities of issuers that are economically tied to at least four different foreign countries. The Fund may invest in securities of companies economically tied to emerging markets. Some issuers of securities in the Fund’s portfolio may be based in or economically tied to the U.S. In selecting investments for the Fund, Marsico uses an approach that combines ‘top-down’ macro-economic analysis that focuses on broad financial and economic indicators with ‘bottom-up’ stock selection that initially focuses on individual stocks. Marsico may sell individual securities for several reasons including: price target of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations. Northern Cross Northern Cross invests its portion of the Fund in securities issued by foreign companies which it believes have the potential for long term margin expansion. Northern Cross primarily focuses on common stocks priced cheaply relative to some financial measure of worth, such as ratios of price to earnings, price to sales or price to cash flow. Under normal market conditions Northern Cross will invest its portion of the Fund in 60-80 companies with a diversified representation of sectors. In selecting securities for the Fund, Northern Cross gives careful consideration to currency, political stability and other effects of international investing. Northern Cross may sell individual securities for several reasons including: full valuation of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks: Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Foreign Investing Risk.    Investing in foreign securities involves higher trading and custody costs than investing in U.S. companies. Accounting, legal and reporting practices are different than in the U.S. and regulation is often less stringent. Potential political or economic instability presents risks, as does the fluctuation in currency exchange rates, as well as the possible imposition of exchange control regulation or currency restrictions that could prevent the conversion of local currencies into U.S. dollars. Some foreign markets are considered to be emerging market countries. Investments in these countries subject the Fund to a greater risk of loss than investments in a developed country. This is due to, among other things, greater market volatility, lower trading volume, political and economic instability, greater risk of market shut down and more governmental limitations on foreign investment policy than those typically found in a developed market. Management Risk.    The assessment by the Fund’s investment adviser or sub-adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. An investment in the Fund may be appropriate for you if you intend to maintain your investment for many years and through multiple stock market cycles. Because of stock market volatility, the Fund may not be a suitable investment if you have a short-term investment horizon or if you are unwilling to accept fluctuations in share price, including significant declines over a given period.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 25.61%,                  during the second quarter of 2009. Worst quarter: -23.84%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Morgan Stanley Capital International All Country World Index (ex-U.S.) (the “MSCI ACWI ex-U.S. Index”) for the 1, 5 and 10-year periods ended 12/31/2017. MSCI ACWI ex-U.S. Index is a free float adjusted market capitalization index that is designed to measure equity market performance in global developed and emerging markets, excluding the United States.
State Farm International Equity Fund | State Farm International Equity Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.80%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.33%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.13%
1 Year	rr_ExpenseExampleYear01	$ 115
3 Years	rr_ExpenseExampleYear03	359
5 Years	rr_ExpenseExampleYear05	622
10 Years	rr_ExpenseExampleYear10	$ 1,375
2008	rr_AnnualReturn2008	(47.03%)
2009	rr_AnnualReturn2009	33.75%
2010	rr_AnnualReturn2010	12.52%
2011	rr_AnnualReturn2011	(13.79%)
2012	rr_AnnualReturn2012	19.19%
2013	rr_AnnualReturn2013	17.97%
2014	rr_AnnualReturn2014	(5.96%)
2015	rr_AnnualReturn2015	(0.17%)
2016	rr_AnnualReturn2016	(5.17%)
2017	rr_AnnualReturn2017	34.35%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	25.61%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.84%)
1 Year	rr_AverageAnnualReturnYear01	34.35%
5 Year	rr_AverageAnnualReturnYear05	7.13%
10 Year	rr_AverageAnnualReturnYear10	1.73%
State Farm International Equity Fund | MSCI ACWI ex-US Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	27.19%
5 Year	rr_AverageAnnualReturnYear05	6.80%
10 Year	rr_AverageAnnualReturnYear10	1.84%

XML

State Farm Bond Fund

BOND FUND

Investment Objective:

The Bond Fund (the “Fund”) seeks to realize over a period of years the highest yield consistent with prudent investment management through current income and capital gains.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Bond Fund State Farm Bond Fund
Management Fees	0.50%
Distribution and Service (12b-1) Fees	none
Other Expenses	0.10%
Total Annual Fund Operating Expenses	0.60%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Bond Fund | State Farm Bond Fund | USD ($)	61	192	335	750

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 19% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests primarily in investment grade bonds issued by U.S. companies, U.S. Government and agency obligations, and mortgage backed securities. Under normal circumstances, the Fund invests at least 80% of its net assets plus any borrowings in investment grade bonds or in bonds that are not rated, but that State Farm Investment Management Corp. (“SFIM” or the “Manager”) has determined to be of comparable quality. A bond is investment grade if Moody’s Investors Service, Inc. (“Moody’s”) or Standard & Poor’s Financial Services LLC, a division of McGraw Hill Financial (“S&P”) has rated the bond in one of their respective four highest rating categories. Non-investment grade bonds are commonly referred to as “junk bonds.” The Fund may invest in any of the following instruments:

• Corporate Debt Securities:    investment grade securities issued by corporations and to a limited extent (up to 20% of its assets), in lower rated securities

• U.S. Government Debt Securities:    securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities

• Foreign Government Debt Securities:    investment grade securities issued or guaranteed by a foreign government or its agencies or instrumentalities, payable in U.S. dollars

• Asset Backed and Mortgage Backed Securities:    investment grade securities backed by mortgages, consumer loans and other assets

• Other Issuer Debt Securities:    the Fund may invest up to 20% of its assets in non-investment grade debt securities and preferred stocks that are convertible into common stocks as well as nonconvertible preferred stocks or securities.

In making investment decisions on specific securities, the Manager looks for companies with one or more of the following characteristics:

• Strong cash flow and a recurring revenue stream

• A strong industry position

• A strong financial position

• Strong management with a clearly defined strategy

• Capability to develop new or superior products or services

The Manager may sell individual securities for several reasons including: price target of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks:

• Management Risk.    The assessment by the Fund’s investment adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Interest Rate Risk and Call Risk.    The risk that the bonds the Fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, the Fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond.

• Prepayment and Extension Risk.    The risk that homeowners or consumers may alter the pace of repayment on their mortgage or consumer loans, which may affect the yield of mortgage-or asset-backed securities that are backed by such loans.

• Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to the Fund, or that the credit quality of the issuer falls. Corporate bonds are subject to greater credit risk than U.S. Government bonds.

• Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money.

• Liquidity Risk.    The investment adviser to the Fund may have difficulty selling securities the Fund holds at the time it would like to sell, and at the value the Fund has placed on those securities.

• Income Risk.    The risk that the income from the bonds the Fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate.

You may want to invest in the Fund if you are seeking higher potential returns than money market funds and are willing to accept the price volatility of bonds with longer maturities, want to diversify your investments, are seeking an income mutual fund for an asset allocation program or are retired or nearing retirement. You may not want to invest in the Fund if you are investing for maximum return over a long time horizon, want the greater growth potential of an investment in equity securities or require stability of your principal.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 5.16%,
                 during the second quarter of 2009.

Worst quarter: -2.54%,
                 during the second quarter of 2013.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Bloomberg Barclays Intermediate Government/Credit Index for the 1, 5 and 10-year periods ended 12/31/2017. The Bloomberg Barclays Intermediate Government/Credit Index includes U.S. Government and corporate bonds maturing within one to ten years and an outstanding par value of at least $250 million.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Bond Fund	1 Year	5 Year	10 Year
State Farm Bond Fund	2.15%	1.32%	3.48%
Bloomberg Barclays Intermediate Govt/Cred Index (Returns reflect no deduction for fees, expenses or taxes.)	2.14%	1.50%	3.32%

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Bond Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	BOND FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Bond Fund (the “Fund”) seeks to realize over a period of years the highest yield consistent with prudent investment management through current income and capital gains.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 19% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	19.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests primarily in investment grade bonds issued by U.S. companies, U.S. Government and agency obligations, and mortgage backed securities. Under normal circumstances, the Fund invests at least 80% of its net assets plus any borrowings in investment grade bonds or in bonds that are not rated, but that State Farm Investment Management Corp. (“SFIM” or the “Manager”) has determined to be of comparable quality. A bond is investment grade if Moody’s Investors Service, Inc. (“Moody’s”) or Standard & Poor’s Financial Services LLC, a division of McGraw Hill Financial (“S&P”) has rated the bond in one of their respective four highest rating categories. Non-investment grade bonds are commonly referred to as “junk bonds.” The Fund may invest in any of the following instruments: Corporate Debt Securities:    investment grade securities issued by corporations and to a limited extent (up to 20% of its assets), in lower rated securities U.S. Government Debt Securities:    securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities Foreign Government Debt Securities:    investment grade securities issued or guaranteed by a foreign government or its agencies or instrumentalities, payable in U.S. dollars Asset Backed and Mortgage Backed Securities:    investment grade securities backed by mortgages, consumer loans and other assets Other Issuer Debt Securities:    the Fund may invest up to 20% of its assets in non-investment grade debt securities and preferred stocks that are convertible into common stocks as well as nonconvertible preferred stocks or securities. In making investment decisions on specific securities, the Manager looks for companies with one or more of the following characteristics: Strong cash flow and a recurring revenue stream A strong industry position A strong financial position Strong management with a clearly defined strategy Capability to develop new or superior products or services The Manager may sell individual securities for several reasons including: price target of the security has been achieved, fundamental deterioration of company prospects, or better alternatives exist. Securities may also be sold based upon tax considerations, liquidity needs or other portfolio management considerations.
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency. An investor in the Fund is subject to the following types of risks: Management Risk.    The assessment by the Fund’s investment adviser of the securities to be purchased or sold by the Fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Interest Rate Risk and Call Risk.    The risk that the bonds the Fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, the Fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond. Prepayment and Extension Risk.    The risk that homeowners or consumers may alter the pace of repayment on their mortgage or consumer loans, which may affect the yield of mortgage-or asset-backed securities that are backed by such loans. Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to the Fund, or that the credit quality of the issuer falls. Corporate bonds are subject to greater credit risk than U.S. Government bonds. Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money. Liquidity Risk.    The investment adviser to the Fund may have difficulty selling securities the Fund holds at the time it would like to sell, and at the value the Fund has placed on those securities. Income Risk.    The risk that the income from the bonds the Fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate. You may want to invest in the Fund if you are seeking higher potential returns than money market funds and are willing to accept the price volatility of bonds with longer maturities, want to diversify your investments, are seeking an income mutual fund for an asset allocation program or are retired or nearing retirement. You may not want to invest in the Fund if you are investing for maximum return over a long time horizon, want the greater growth potential of an investment in equity securities or require stability of your principal.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the FDIC or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 5.16%,                  during the second quarter of 2009. Worst quarter: -2.54%,                  during the second quarter of 2013.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the Bloomberg Barclays Intermediate Government/Credit Index for the 1, 5 and 10-year periods ended 12/31/2017. The Bloomberg Barclays Intermediate Government/Credit Index includes U.S. Government and corporate bonds maturing within one to ten years and an outstanding par value of at least $250 million.
State Farm Bond Fund | State Farm Bond Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	0.50%
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.10%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.60%
1 Year	rr_ExpenseExampleYear01	$ 61
3 Years	rr_ExpenseExampleYear03	192
5 Years	rr_ExpenseExampleYear05	335
10 Years	rr_ExpenseExampleYear10	$ 750
2008	rr_AnnualReturn2008	0.95%
2009	rr_AnnualReturn2009	12.25%
2010	rr_AnnualReturn2010	5.54%
2011	rr_AnnualReturn2011	6.58%
2012	rr_AnnualReturn2012	3.45%
2013	rr_AnnualReturn2013	(2.06%)
2014	rr_AnnualReturn2014	3.52%
2015	rr_AnnualReturn2015	1.01%
2016	rr_AnnualReturn2016	2.08%
2017	rr_AnnualReturn2017	2.15%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	5.16%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Jun. 30, 2013
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(2.54%)
1 Year	rr_AverageAnnualReturnYear01	2.15%
5 Year	rr_AverageAnnualReturnYear05	1.32%
10 Year	rr_AverageAnnualReturnYear10	3.48%
State Farm Bond Fund | Bloomberg Barclays Intermediate Govt/Cred Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.14%
5 Year	rr_AverageAnnualReturnYear05	1.50%
10 Year	rr_AverageAnnualReturnYear10	3.32%

XML

State Farm Stock and Bond Balanced Fund

STOCK AND BOND BALANCED FUND

Investment Objective:

The Stock and Bond Balanced Fund (the “Fund”) seeks long-term growth of capital, balanced with current income.

What are the costs of investing in the Fund?

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

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	State Farm Stock and Bond Balanced Fund State Farm Stock and Bond Balanced Fund
Management Fees	none
Distribution and Service (12b-1) Fees	none
Other Expenses	0.09%
Acquired Fund Fees & Expenses	0.31%	[1]
Total Annual Fund Operating Expenses	0.40%

Expense Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
State Farm Stock and Bond Balanced Fund | State Farm Stock and Bond Balanced Fund | USD ($)	41	128	224	505

The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses 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 rate 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 4% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests substantially all of its assets in shares of the Large Cap Equity Index Fund and the Bond Fund. The Fund attempts to maintain approximately 60% of its assets in shares of the Large Cap Equity Index Fund and 40% of its assets in shares of the Bond Fund. The Large Cap Equity Index Fund primarily invests in stocks of issuers that are listed on the S&P 500 Index. The Bond Fund invests primarily in investment grade bonds issued by U.S. companies, U.S. Government and agency obligations, and mortgage backed securities or in bonds that are not rated, but that State Farm Investment Management Corp. (“SFIM” or the “Manager”) has determined to be of comparable quality.

In making investment decisions on specific securities for the Bond Fund, the Manager looks for companies with one or more of the following characteristics:

• Strong cash flow and a recurring revenue stream

• A strong industry position

• A strong financial position

• Strong management with a clearly defined strategy

• Capability to develop new or superior products or services

Principal Risks of Investing in the Fund

Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks:

• Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions.

• Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices.

• Management Risk.    The assessment by a fund’s investment adviser or sub-adviser of the securities to be purchased or sold by a fund may prove incorrect, resulting in losses or poor performance, even in a rising market.

• Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Large Cap Equity Index Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that the Large Cap Equity Index Fund will succeed, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly.

• Security Selection Risk.    Because securities market indices are developed by persons unrelated to an index fund, a fund’s investment adviser or sub-adviser, an index fund may hold stocks in companies that present risks that a fund’s investment adviser or sub-adviser researching individual stocks might avoid.

• Interest Rate Risk and Call Risk.    The risk that the bonds a fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, a fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond.

• Prepayment and Extension Risk.    The risk that homeowners or consumers may alter the pace of repayment on their mortgage or consumer loans, which may affect the yield of mortgage-or asset-backed securities that are backed by such loans.

• Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to a fund, or that the credit quality of the issuer falls. Corporate bonds are subject to greater credit risk than U.S. Government bonds.

• Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money.

• Liquidity Risk.    The investment adviser to a fund may have difficulty selling securities a fund holds at the time it would like to sell, and at the value a fund has placed on those securities.

• Income Risk.    The risk that the income from the bonds a fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate.

• Investment Company Securities Risk.    The Fund invests in securities of other open-end investment companies. The risks of investment in other investment companies typically reflect the risks of the types of securities in which those underlying funds invest. When the Fund invests in another investment company, shareholders of the Fund bear their proportionate share of the other investment company’s fees and expenses as well as their share of the Fund’s fees and expenses.

You may want to consider investing in the Fund if you are seeking higher potential returns than money market funds and are willing to accept a moderate level of volatility, want to diversify your investments, are seeking an income mutual fund for an asset allocation program or are retired or nearing retirement. You may not want to invest in the Fund if you are investing for maximum return over a long time horizon or require stability of your principal.

Investment Results

The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).

The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.

Annual Total Returns For Calendar Years

The Fund’s best and worst quarters during the periods in the bar chart were:

Best quarter: 11.29%,
                 during the second quarter of 2009.

Worst quarter: -12.51%,
                 during the fourth quarter of 2008.

The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 Index and Bloomberg Barclays Intermediate Government/Credit Index for the 1, 5 and 10-year periods ended 12/31/2017. SFIM computes the Blended Benchmark by using 60% S&P 500 Index and 40% Bloomberg Barclays Intermediate Government/Credit Index.

Average Annual Total Returns
(for the periods ended December 31, 2017)

Average Annual Total Returns - State Farm Stock and Bond Balanced Fund	1 Year	5 Year	10 Year
State Farm Stock and Bond Balanced Fund	13.96%	9.93%	6.70%
S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)	21.83%	15.79%	8.50%
Bloomberg Barclays Intermediate Govt/Cred Index (Returns reflect no deduction for fees, expenses or taxes.)	2.14%	1.50%	3.32%
Blended Benchmark (Returns reflect no deduction for fees, expenses or taxes.)	13.59%	9.99%	6.70%

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
State Farm Stock and Bond Balanced Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	STOCK AND BOND BALANCED FUND
Objective [Heading]	rr_ObjectiveHeading	Investment Objective:
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Stock and Bond Balanced Fund (the “Fund”) seeks long-term growth of capital, balanced with current income.
Expense [Heading]	rr_ExpenseHeading	What are the costs of investing in the Fund?
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses you may pay if you buy and hold shares of the Fund.
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs. 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 4% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	4.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]	rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees	Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The example does not reflect additional charges and expenses that are described in the prospectuses for the variable deferred annuity and variable universal life insurance policies issued by State Farm Life Insurance Company and State Farm Life and Accident Assurance Company. If those charges and expenses were included, the expenses would be higher.
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests substantially all of its assets in shares of the Large Cap Equity Index Fund and the Bond Fund. The Fund attempts to maintain approximately 60% of its assets in shares of the Large Cap Equity Index Fund and 40% of its assets in shares of the Bond Fund. The Large Cap Equity Index Fund primarily invests in stocks of issuers that are listed on the S&P 500 Index. The Bond Fund invests primarily in investment grade bonds issued by U.S. companies, U.S. Government and agency obligations, and mortgage backed securities or in bonds that are not rated, but that State Farm Investment Management Corp. (“SFIM” or the “Manager”) has determined to be of comparable quality. In making investment decisions on specific securities for the Bond Fund, the Manager looks for companies with one or more of the following characteristics: Strong cash flow and a recurring revenue stream A strong industry position A strong financial position Strong management with a clearly defined strategy Capability to develop new or superior products or services
Risk [Heading]	rr_RiskHeading	Principal Risks of Investing in the Fund
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund. An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency. An investor in the Fund is subject to the following types of risks: Equity Securities Risk.    Stock markets are volatile. The price of equity securities fluctuates based on changes in a company’s financial condition and overall market and economic conditions. Market Risk.    Stock prices may fluctuate widely over short or even extended periods in response to company, market, or economic news. Stock markets also tend to move in cycles, with periods of rising stock prices and periods of falling stock prices. Management Risk.    The assessment by a fund’s investment adviser or sub-adviser of the securities to be purchased or sold by a fund may prove incorrect, resulting in losses or poor performance, even in a rising market. Index Fund Risk.    An index fund has operating and other expenses, while an index does not. As a result, while the Large Cap Equity Index Fund will attempt to track its benchmark index as closely as possible, there is no guarantee that the Large Cap Equity Index Fund will succeed, and it will tend to underperform the index to some degree over time. If an index fund is properly correlated to its stated index, that fund will perform poorly when the index performs poorly. Security Selection Risk.    Because securities market indices are developed by persons unrelated to an index fund, a fund’s investment adviser or sub-adviser, an index fund may hold stocks in companies that present risks that a fund’s investment adviser or sub-adviser researching individual stocks might avoid. Interest Rate Risk and Call Risk.    The risk that the bonds a fund holds may decline in value due to an increase in interest rates. All bonds, including those issued by the U.S. Government, are subject to interest rate risk. Bonds with longer maturities are affected more by interest rate movements than bonds with shorter maturities. Another risk associated with interest rate changes is call risk. Call risk is the risk that during periods of falling interest rates, a bond issuer will “call” or repay a higher yielding bond before the maturity date of the bond. Under these circumstances, a fund may have to reinvest the proceeds in an investment that provides a lower yield than the called bond. Prepayment and Extension Risk.    The risk that homeowners or consumers may alter the pace of repayment on their mortgage or consumer loans, which may affect the yield of mortgage-or asset-backed securities that are backed by such loans. Credit Risk.    The risk that a bond issuer fails to make principal or interest payments when due to a fund, or that the credit quality of the issuer falls. Corporate bonds are subject to greater credit risk than U.S. Government bonds. Inflation Risk.    The risk that the value of the assets or income from an investment will be worth less in the future as inflation decreases the value of money. Liquidity Risk.    The investment adviser to a fund may have difficulty selling securities a fund holds at the time it would like to sell, and at the value a fund has placed on those securities. Income Risk.    The risk that the income from the bonds a fund holds will decline. This risk applies when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the portfolio’s current earnings rate. Investment Company Securities Risk.    The Fund invests in securities of other open-end investment companies. The risks of investment in other investment companies typically reflect the risks of the types of securities in which those underlying funds invest. When the Fund invests in another investment company, shareholders of the Fund bear their proportionate share of the other investment company’s fees and expenses as well as their share of the Fund’s fees and expenses. You may want to consider investing in the Fund if you are seeking higher potential returns than money market funds and are willing to accept a moderate level of volatility, want to diversify your investments, are seeking an income mutual fund for an asset allocation program or are retired or nearing retirement. You may not want to invest in the Fund if you are investing for maximum return over a long time horizon or require stability of your principal.
Risk Lose Money [Text]	rr_RiskLoseMoney	Investors who purchase shares of the Fund are subject to various risks, and it is possible for you to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in this Fund is not a deposit of any bank or other insured depository institution and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or another government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Investment Results
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund). The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The following bar chart and table illustrate certain risks of investing in the Fund by showing changes in the Fund’s performance from year to year. This information is intended to help you assess the variability of the Fund’s returns over the periods listed to a measure of market performance (and consequently, the potential returns and risks of an investment in the Fund).
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance doesn’t necessarily indicate how it will perform in the future.
Bar Chart [Heading]	rr_BarChartHeading	Annual Total Returns For Calendar Years
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	The Fund’s best and worst quarters during the periods in the bar chart were: Best quarter: 11.29%,                  during the second quarter of 2009. Worst quarter: -12.51%,                  during the fourth quarter of 2008.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns (for the periods ended December 31, 2017)
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	The following table shows the Average Annual Total Returns on an investment in the Fund compared to changes in the S&P 500 Index and Bloomberg Barclays Intermediate Government/Credit Index for the 1, 5 and 10-year periods ended 12/31/2017. SFIM computes the Blended Benchmark by using 60% S&P 500 Index and 40% Bloomberg Barclays Intermediate Government/Credit Index.
State Farm Stock and Bond Balanced Fund | State Farm Stock and Bond Balanced Fund
Risk/Return:	rr_RiskReturnAbstract
Management Fees	rr_ManagementFeesOverAssets	none
Distribution and Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.09%
Acquired Fund Fees & Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.31%	[1]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.40%
1 Year	rr_ExpenseExampleYear01	$ 41
3 Years	rr_ExpenseExampleYear03	128
5 Years	rr_ExpenseExampleYear05	224
10 Years	rr_ExpenseExampleYear10	$ 505
2008	rr_AnnualReturn2008	(23.14%)
2009	rr_AnnualReturn2009	21.06%
2010	rr_AnnualReturn2010	11.46%
2011	rr_AnnualReturn2011	3.72%
2012	rr_AnnualReturn2012	10.77%
2013	rr_AnnualReturn2013	17.97%
2014	rr_AnnualReturn2014	9.43%
2015	rr_AnnualReturn2015	1.11%
2016	rr_AnnualReturn2016	7.90%
2017	rr_AnnualReturn2017	13.96%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	11.29%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(12.51%)
1 Year	rr_AverageAnnualReturnYear01	13.96%
5 Year	rr_AverageAnnualReturnYear05	9.93%
10 Year	rr_AverageAnnualReturnYear10	6.70%
State Farm Stock and Bond Balanced Fund | S&P 500 Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	21.83%
5 Year	rr_AverageAnnualReturnYear05	15.79%
10 Year	rr_AverageAnnualReturnYear10	8.50%
State Farm Stock and Bond Balanced Fund | Bloomberg Barclays Intermediate Govt/Cred Index (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.14%
5 Year	rr_AverageAnnualReturnYear05	1.50%
10 Year	rr_AverageAnnualReturnYear10	3.32%
State Farm Stock and Bond Balanced Fund | Blended Benchmark (Returns reflect no deduction for fees, expenses or taxes.)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	13.59%
5 Year	rr_AverageAnnualReturnYear05	9.99%
10 Year	rr_AverageAnnualReturnYear10	6.70%

[1] “Acquired Fund Fees & Expenses” are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. These expenses are based on the total expense ratio of the underlying funds disclosed in each underlying fund’s most recent shareholder report. Please note that the amount of “Total Annual Fund Operating Expenses” shown in the above table differs from the ratio of expenses to average net assets included in the “Financial Highlights” section of this Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees & Expenses.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	STATE FARM VARIABLE PRODUCT TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2018
Document Creation Date	dei_DocumentCreationDate	Apr. 27, 2018