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Cover
Jan. 03, 2022
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jan. 03, 2022
Entity File Number 000-52313
Entity Tax Identification Number 62-0474417
Entity Address, Postal Zip Code 37902
Entity Address, State or Province TN
Entity Address, City or Town Knoxville
Entity Address, Address Line One 400 W. Summit Hill Drive
Entity Registrant Name TENNESSEE VALLEY AUTHORITY
City Area Code (865)
Local Phone Number 632-2101
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Document Fiscal Year Focus 2022
Document Fiscal Period Focus FY
Amendment Flag false
Entity Incorporation, State or Country Code X1
Entity Central Index Key 0001376986