Document and Entity Information	Mar. 19, 2020
Prospectus:
Document Type	497
Document Period End Date	Mar. 19, 2020
Registrant Name	BNY Mellon Investment Grade Funds, Inc.
Entity Central Index Key	0000889169
Entity Inv Company Type	N-1A
Amendment Flag	false
Document Creation Date	Mar. 19, 2020
Document Effective Date	Mar. 19, 2020
Prospectus Date	Nov. 29, 2019
BNY Mellon Inflation Adjusted Securities Fund \| Class Y \| BNY Mellon Investment Grade Funds, Inc.
Prospectus:
Trading Symbol	DAIYX
BNY Mellon Inflation Adjusted Securities Fund \| Class I \| BNY Mellon Investment Grade Funds, Inc.
Prospectus:
Trading Symbol	DIASX
BNY Mellon Inflation Adjusted Securities Fund \| Investor Shares \| BNY Mellon Investment Grade Funds, Inc.
Prospectus:
Trading Symbol	DIAVX
BNY Mellon Short Term Income Fund \| Class P \| BNY Mellon Investment Grade Funds, Inc.
Prospectus:
Trading Symbol	DSHPX
BNY Mellon Short Term Income Fund \| Class D \| BNY Mellon Investment Grade Funds, Inc.
Prospectus:
Trading Symbol	DSTIX
BNY Mellon Japan Womenomics Fund \| Class Y \| BNY MELLON OPPORTUNITY FUNDS
Prospectus:
Trading Symbol	DJWYX
BNY Mellon Japan Womenomics Fund \| Class I \| BNY MELLON OPPORTUNITY FUNDS
Prospectus:
Trading Symbol	DJWIX
BNY Mellon Japan Womenomics Fund \| Class C \| BNY MELLON OPPORTUNITY FUNDS
Prospectus:
Trading Symbol	DJWCX
BNY Mellon Japan Womenomics Fund \| Class A \| BNY MELLON OPPORTUNITY FUNDS
Prospectus:
Trading Symbol	DJWAX

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