Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	May 11, 2018
Registrant Name	dei_EntityRegistrantName	HARTFORD MUTUAL FUNDS INC/CT
Central Index Key	dei_EntityCentralIndexKey	0001006415
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	May 11, 2018
Document Effective Date	dei_DocumentEffectiveDate	May 11, 2018
Prospectus Date	rr_ProspectusDate	May 01, 2018
THE HARTFORD CHECKS AND BALANCES FUND \| Class A
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKAX
THE HARTFORD CHECKS AND BALANCES FUND \| Class T
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKLX
THE HARTFORD CHECKS AND BALANCES FUND \| Class C
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKCX
THE HARTFORD CHECKS AND BALANCES FUND \| Class I
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKIX
THE HARTFORD CHECKS AND BALANCES FUND \| Class R3
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKRX
THE HARTFORD CHECKS AND BALANCES FUND \| Class R4
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKSX
THE HARTFORD CHECKS AND BALANCES FUND \| Class R5
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKTX
THE HARTFORD CHECKS AND BALANCES FUND \| Class F
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HCKFX

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- Definition

The date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.

+ References

No definition available.

+ Details

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- Definition

The date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.

+ References

No definition available.

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- Definition

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

+ References

No definition available.

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".

+ References

No definition available.

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation 12B
-Number 240
-Section 12b
-Subsection 1

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation 12B
-Number 240
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- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

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- Definition

The date of the prospectus.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 1
-Subsection a
-Paragraph 3

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- References

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