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Financial Instruments - Summary of Equity Investment Activity (Details)
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
Level 1:  
Fair Value, Level 1  
Beginning balance, carrying value $ 4.3
Changes in fair value (0.4)
Purchases / Sales / Other (3.9)
Ending balance, carrying value 0.0
Fair Value, Inputs, Level 2  
Fair Value, Level 2  
Beginning balance, carrying value 59.1
Changes in fair value (5.9)
Purchases / Sales / Other 21.3
Ending balance, carrying value 74.5
Prepaids and other current assets | Level 1:  
Fair Value, Level 1  
Ending balance, carrying value 0.0
Prepaids and other current assets | Fair Value, Inputs, Level 2  
Fair Value, Level 2  
Ending balance, carrying value 0.0
Intangible and other assets, net | Level 1:  
Fair Value, Level 1  
Ending balance, carrying value 0.0
Intangible and other assets, net | Fair Value, Inputs, Level 2  
Fair Value, Level 2  
Ending balance, carrying value $ 74.5