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Supplemental Cash Flow Information
12 Months Ended
Sep. 30, 2020
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
    Interest paid was $1.1 billion for 2020 and $1.2 billion for both 2019 and 2018. These amounts differ from interest expense in certain years due to the timing of payments. There was no interest capitalized in 2020, 2019, or 2018.

    Construction in progress and Nuclear fuel expenditures included in Accounts payable and accrued liabilities at September 30, 2020, 2019, and 2018 were $398 million, $324 million, and $372 million, respectively, and are excluded from the Statements of Consolidated Cash Flows for the years ended September 30, 2020, 2019, and 2018 as non-cash investing activities. 

    Excluded from the Statements of Consolidated Cash Flows for the years ended September 30, 2020 and 2019, as non-cash financing activities were $394 million related to lease obligations incurred primarily in connection with a PPA and $10 million related to lease obligations incurred for leased equipment, respectively. There were no capital leases incurred during 2018. See Note 7 — Leases for further information regarding TVA's finance leases. Also excluded from the Statement of Consolidated Cash Flows for the year ended September 30, 2020, were $80 million and $73 million as non-cash financing and investing activities, respectively, due to derecognition of the Paradise pipeline financing obligation and asset.

    Cash flows from swap contracts that are accounted for as hedges are classified in the same category as the item being hedged or on a basis consistent with the nature of the instrument.