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Receivables, Loans, Notes Receivable, and Others (Tables)
6 Months Ended
Jun. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Equity Method Investments
The table below summarizes the book value of those investments, which are reported in “Investments and other assets” in the condensed consolidated balance sheets, and the related “Loss (income) from equity affiliates”:
Loss (Income) from Equity Affiliates
Book Value atThree Months Ended June 30,Six Months Ended June 30,
June 30, 2024December 31, 20232024202320242023
(Dollars in millions)
Equity method investment related to Middlemount$43.0 $42.5 $(2.3)$(4.1)$(1.9)$(6.7)
Equity method investment related to R38.6 7.1 3.6 1.8 6.9 2.6 
Total equity method investments$51.6 $49.6 $1.3 $(2.3)$5.0 $(4.1)