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Benefit Plans Amounts Recognized on TVA's Consolidated Balance Sheets (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | --- | ---
Defined Benefit Plan Disclosure |  |  |  |
Regulatory assets |  | $ (6,134) | $ (7,956) |
Non-current regulatory liabilities |  | (172) | (40) |
Accounts payable and accrued liabilities |  | (2,466) | (2,215) |
Pension and post-retirement benefit obligations |  | (3,072) | (5,045) |
Postemployment benefits liability, noncurrent |  | 299 |  |
Pension Benefits |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |
Amount capitalized due to actions of regulator |  | 77 | 91 |
Regulatory assets |  | (1,839) | (3,636) |
Accounts payable and accrued liabilities |  | (6) | (7) |
Pension and post-retirement benefit obligations | [1] | (2,436) | (4,231) |
Other Post-retirement Benefits |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |
Amount capitalized due to actions of regulator |  | 0 | 0 |
Regulatory assets |  | (70) | (32) |
Non-current regulatory liabilities |  | (70) |  |
Accounts payable and accrued liabilities |  | (22) | (24) |
Pension and post-retirement benefit obligations | [1] | (366) | (474) |
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |
Postemployment benefits liability, noncurrent |  | $ 270 | $ 340 | $ 390
[1] | The table above excludes $270 million and $340 million of post-employment benefit costs that are recorded in Post-retirement and post-employment benefit obligations on the Consolidated Balance Sheets at September 30, 2022 and 2021, respectively.

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