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Other Assets (Detail) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Other assets    
Investments in affiliated companies (Note 8) $ 302.4 $ 265.9
Right-of-use lease assets 119.8 127.4
Interest rate swaps (Notes 11 and 16) 193.7 237.7
Note Receivable (Note 16) 72.4 70.3
Other 77.7 69.7
Other Assets, Noncurrent $ 766.0 $ 771.0