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Long-term Debt and Finance Leases - Dunkirk Bonds (Details) - USD ($) $ in Millions	Dec. 31, 2023	Apr. 03, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt	$ 10,940		$ 8,100
Dunkirk Bonds
Debt Instrument [Line Items]
Long-term debt		$ 59
Interest rate, stated percentage		4.25%

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Contractual interest rate for funds borrowed, under the debt agreement.

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