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Note 14 - Composition of Certain Financial Statement Caption - Components of Other Noncurrent Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Pension benefits $ 121.4 $ 89.0
Other assets - prepaid expenses 73.2 50.7
Investments in nonpublic companies 231.4 229.8
State income tax receivable 67.7 0.0
Deposits and other 2.4 1.9
Total other noncurrent assets $ 496.1 $ 371.4