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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Property, plant and equipment - accumulated depreciation | $ 1,956 | $ 1,744
Common stock, par value (in dollars per share) | $ 1 | $ 1
Common stock, authorized shares | 1,250,000 | 1,250,000
Common stock, issued shares | 971,055 | 1,160,779
Common stock, outstanding shares | 971,055 | 1,160,779
Affiliates |  |
Accounts payable to affiliates | $ 1 | $ 2
Deferred revenue from affiliates | $ 28 | $ 12

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