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SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Movement in valuation and qualifying accounts |  |  |  |
State income tax benefit, net of federal expense |  | $ (9) | $ 39 | $ (2)
Allowances for credit losses deducted from accounts receivable in the balance sheet: |  |  |  |
Movement in valuation and qualifying accounts |  |  |  |
Balance at Beginning of Period |  | 11 | 8 | 6
Charged to Costs and Expenses |  | 4 | 7 | 5
Charged to Other Accounts |  | 0 | 0 | 0
Deductions |  | (5) | (5) | (3)
Balance at End of Period |  | 10 | 11 | 8
Valuation allowance on deferred tax assets: |  |  |  |
Movement in valuation and qualifying accounts |  |  |  |
Balance at Beginning of Period |  | 33 | 15 | 17
Charged to Costs and Expenses |  | 0 | 2 | 0
Charged to Other Accounts |  | 0 | 53 | 0
Deductions |  | (6) | (37) | (2)
Balance at End of Period |  | 27 | 33 | $ 15
Valuation allowance on deferred tax assets: | Sauna360 |  |  |  |
Movement in valuation and qualifying accounts |  |  |  |
Charged to Other Accounts | $ 5 |  |  |
Valuation allowance on deferred tax assets: state deferred tax |  |  |  |
Movement in valuation and qualifying accounts |  |  |  |
Charged to Other Accounts |  |  | $ 48 |
State income tax benefit, net of federal expense |  | $ 29 |  |

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