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Fair Value Measurements - Summary of Assets Measured at Fair Value on Non Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities $ 224.1 $ 395.8  
Non Marketable Equity Securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities 224.1 395.8 $ 441.3
Non Marketable Equity Securities | Non-recurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities [1] 95.1 [2] 117.3 [3]  
Non Marketable Equity Securities | Level 1 | Non-recurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities [1] 0.0 [2] 0.0 [3]  
Non Marketable Equity Securities | Level 2 | Non-recurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities [1] 56.5 [2] 107.3 [3]  
Non Marketable Equity Securities | Level 3 | Non-recurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Non-marketable equity securities [1] $ 38.6 [2] $ 10.0 [3]  
[1] Estimated fair values were determined during the year as of the dates that either an observable transaction occurred or an impairment assessment was made.
[2] Excludes $129.0 million of non-marketable equity securities for which no observable price changes or impairment charges occurred during the year ended December 31, 2023.
[3] Excludes $278.5 million of non-marketable equity securities for which no observable price changes or impairment charges occurred during the year ended December 31, 2022.