Document and Entity Information	Total
Prospectus:
Document Type	485BPOS
Document Period End Date	Jul. 31, 2022
Entity Registrant Name	THE INCOME FUND OF AMERICA
Entity Central Index Key	0000050013
Entity Inv Company Type	N-1A
Amendment Flag	false
Document Creation Date	Sep. 13, 2022
Document Effective Date	Oct. 01, 2022
Prospectus Date	Oct. 01, 2022
INCOME FUND OF AMERICA \| Class A
Prospectus:
Trading Symbol	AMECX
INCOME FUND OF AMERICA \| Class R-1
Prospectus:
Trading Symbol	RIDAX
INCOME FUND OF AMERICA \| Class R-2
Prospectus:
Trading Symbol	RIDBX
INCOME FUND OF AMERICA \| Class R-3
Prospectus:
Trading Symbol	RIDCX
INCOME FUND OF AMERICA \| Class R-4
Prospectus:
Trading Symbol	RIDEX
INCOME FUND OF AMERICA \| Class R-5
Prospectus:
Trading Symbol	RIDFX
INCOME FUND OF AMERICA \| Class C
Prospectus:
Trading Symbol	IFACX
INCOME FUND OF AMERICA \| Class F-1
Prospectus:
Trading Symbol	IFAFX
INCOME FUND OF AMERICA \| Class 529-A
Prospectus:
Trading Symbol	CIMAX
INCOME FUND OF AMERICA \| Class 529-C
Prospectus:
Trading Symbol	CIMCX
INCOME FUND OF AMERICA \| Class 529-E
Prospectus:
Trading Symbol	CIMEX
INCOME FUND OF AMERICA \| Class 529-F-1
Prospectus:
Trading Symbol	CIMFX
INCOME FUND OF AMERICA \| Class F-2
Prospectus:
Trading Symbol	AMEFX
INCOME FUND OF AMERICA \| Class R-6
Prospectus:
Trading Symbol	RIDGX
INCOME FUND OF AMERICA \| Class R-2E
Prospectus:
Trading Symbol	RIEBX
INCOME FUND OF AMERICA \| Class R-5E
Prospectus:
Trading Symbol	RIDHX
INCOME FUND OF AMERICA \| Class F-3
Prospectus:
Trading Symbol	FIFAX
INCOME FUND OF AMERICA \| Class 529-T
Prospectus:
Trading Symbol	TFAAX
INCOME FUND OF AMERICA \| Class T
Prospectus:
Trading Symbol	TIAFX
INCOME FUND OF AMERICA \| Class 529-F-2
Prospectus:
Trading Symbol	FAIFX
INCOME FUND OF AMERICA \| Class 529-F-3
Prospectus:
Trading Symbol	FFIFX

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- Definition

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

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No definition available.

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- Definition

The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-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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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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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 12
-Subsection b-2

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One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-T
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-Section 313

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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
-Section 12
-Subsection b-2

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Trading symbol of an instrument as listed on an exchange.

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- Definition

The date of the prospectus.

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

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Prospectus Table.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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