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Cover
May 15, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date May 15, 2025
Current Fiscal Year End Date --12-31
Entity File Number 811-22216
Entity Registrant Name GAMCO Natural Resources, Gold & Income Trust
Entity Central Index Key 0001438893
Entity Tax Identification Number 27-4249875
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One One Corporate Center
Entity Address, City or Town Rye
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10580-1422
City Area Code (800)
Local Phone Number 422-3554
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Shares of Beneficial Interest  
Title of 12(b) Security Common Shares of Beneficial Interest
Trading Symbol GNT
Security Exchange Name NYSE
Series A Cumulative Preferred Shares  
Title of 12(b) Security Series A Cumulative Preferred Shares
Trading Symbol GNT Pr A
Security Exchange Name NYSE