XML 104 R80.htm IDEA: XBRL DOCUMENT v3.25.0.1
Fair Value Measurements Fair Value Measurements (Details) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financing Receivable, after Allowance for Credit Loss $ 86   $ 99
Investments      
Government debt securities 454   457
Corporate debt securities 378   378
Mortgage and asset-backed securities 41   43
Institutional mutual funds 337   342
Forward debt securities contracts 9   11
Private credit measured at net asset value 258   219
Private equity funds measured at net asset value(1) 765   738 [1]
Private real estate funds measured at net asset value(1) 441   432 [1]
Commingled funds measured at net asset value(1) 1,268   1,300 [1]
Total investments 4,919   4,968
Commodity contract derivatives 12   7
Total 4,937   4,975
Liabilities      
Currency swaps [2] 136   116
Interest rate swaps 635   840
Commodity contract derivatives 6   5
Total 858   1,122
Equity Securities, FV-NI 704   770
Cash, Cash Equivalents, and Short-Term Investments 264   278
Government debt securities reclassed 49   95
Commingled funds reclassed 447   495
Net Payables 76   78
Repurchase Agreements 179   174
Commodity Contract under FHP      
Investments      
Total derivatives not subject to master netting or similar arrangement 6    
Liabilities      
Derivative Liability, Not Subject to Master Netting Arrangement 81   161
NDT [Member]      
Liabilities      
Debt and Equity Securities, Unrealized Gain (Loss) (43) $ 61  
Debt and Equity Securities, Unrealized Gain (Loss) (43) 61  
ART [Member]      
Liabilities      
Debt and Equity Securities, Unrealized Gain (Loss) (11) 18  
Debt and Equity Securities, Unrealized Gain (Loss) (11) 18  
RP      
Liabilities      
Debt and Equity Securities, Unrealized Gain (Loss) 1 1  
Debt and Equity Securities, Unrealized Gain (Loss) 1 $ 1  
Fair Value, Inputs, Level 1      
Investments      
Government debt securities 398   400
Corporate debt securities 0   0
Mortgage and asset-backed securities 0   0
Institutional mutual funds 337   342
Forward debt securities contracts 0   0
Private credit measured at net asset value 0   0
Private equity funds measured at net asset value(1) 0   0 [1]
Private real estate funds measured at net asset value(1) 0   0 [1]
Commingled funds measured at net asset value(1) 0   0 [1]
Total investments 1,488   1,607
Commodity contract derivatives 0   0
Total 1,488   1,607
Liabilities      
Currency swaps 0   0 [2]
Interest rate swaps 0   0
Commodity contract derivatives 0   0
Total 0   0
Equity Securities, FV-NI 704   770
Cash, Cash Equivalents, and Short-Term Investments 49   95
Fair Value, Inputs, Level 1 | Commodity Contract under FHP      
Investments      
Total derivatives not subject to master netting or similar arrangement 0    
Liabilities      
Derivative Liability, Not Subject to Master Netting Arrangement 0   0
Fair Value, Inputs, Level 2      
Investments      
Government debt securities 56   57
Corporate debt securities 378   378
Mortgage and asset-backed securities 41   43
Institutional mutual funds 0   0
Forward debt securities contracts 9   11
Private credit measured at net asset value 0   0
Private equity funds measured at net asset value(1) 0   0 [1]
Private real estate funds measured at net asset value(1) 0   0 [1]
Commingled funds measured at net asset value(1) 0   0 [1]
Total investments 699   672
Commodity contract derivatives 12   7
Total 717   679
Liabilities      
Currency swaps 136   116 [2]
Interest rate swaps 635   840
Commodity contract derivatives 6   5
Total 858   1,122
Equity Securities, FV-NI 0   0
Cash, Cash Equivalents, and Short-Term Investments 215   183
Fair Value, Inputs, Level 2 | Commodity Contract under FHP      
Investments      
Total derivatives not subject to master netting or similar arrangement 6    
Liabilities      
Derivative Liability, Not Subject to Master Netting Arrangement 81   161
Fair Value, Inputs, Level 3      
Investments      
Government debt securities 0   0
Corporate debt securities 0   0
Mortgage and asset-backed securities 0   0
Institutional mutual funds 0   0
Forward debt securities contracts 0   0
Private credit measured at net asset value 0   0
Private equity funds measured at net asset value(1) 0   0 [1]
Private real estate funds measured at net asset value(1) 0   0 [1]
Commingled funds measured at net asset value(1) 0   0 [1]
Total investments 0   0
Commodity contract derivatives 0   0
Total 0   0
Liabilities      
Currency swaps 0   0 [2]
Interest rate swaps 0   0
Commodity contract derivatives 0   0
Total 0   0
Equity Securities, FV-NI 0   0
Cash, Cash Equivalents, and Short-Term Investments 0   0
Fair Value, Inputs, Level 3 | Commodity Contract under FHP      
Investments      
Total derivatives not subject to master netting or similar arrangement 0    
Liabilities      
Derivative Liability, Not Subject to Master Netting Arrangement $ 0   $ 0
[1] Certain investments that are measured at fair value using the NAV or its equivalent (alternative investments) have not been categorized in the fair value hierarchy. The inputs to these fair value measurements include underlying NAVs, discounted cash flow valuations, comparable market valuations, and adjustments for currency, credit, liquidity, and other risks. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented on the Consolidated Balance Sheets.
(6) TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 13 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.
[2] TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 13 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.