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Long-Term Debt - CEI Senior Notes due 2029 (Narrative) (Details) - USD ($)
$ in Billions
Mar. 31, 2024
Sep. 24, 2021
Long-term debt    
Interest rate 4.30%  
CEI Senior Notes due 2029 | Senior Notes    
Long-term debt    
Long-term debt, gross   $ 1.2
Interest rate 4.625% 4.625%