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Financial Instruments - Schedule of Fair Value Measurement (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Statement [Line Items]    
Noncurrent investments $ 3,215.9 $ 3,052.2
Carrying Amount    
Statement [Line Items]    
Cash equivalents 1,506.9 1,088.4
Short-term investments 154.8 109.1
Equity investments without readily determinable fair values 863.8 608.0
Noncurrent investments 3,215.9 3,052.2
Carrying Amount | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 29.2 32.1
Noncurrent investments 140.2 148.1
Carrying Amount | Corporate debt securities    
Statement [Line Items]    
Short-term investments 65.3 52.0
Noncurrent investments 211.4 214.3
Carrying Amount | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 165.3 157.3
Carrying Amount | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.6  
Noncurrent investments 56.7 53.5
Carrying Amount | Other securities    
Statement [Line Items]    
Short-term investments 59.7 25.0
Carrying Amount | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 150.3 197.4
Carrying Amount | Marketable equity securities    
Statement [Line Items]    
Equity securities 485.5 711.3
Carrying Amount | Equity method investments    
Statement [Line Items]    
Equity method investments 1,142.7 962.3
Cost    
Statement [Line Items]    
Cash equivalents 1,506.9 1,088.4
Cost | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 29.3 32.3
Noncurrent investments 156.4 161.0
Cost | Corporate debt securities    
Statement [Line Items]    
Short-term investments 65.4 52.1
Noncurrent investments 225.0 226.6
Cost | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 177.2 167.1
Cost | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.7  
Noncurrent investments 57.5 54.4
Cost | Other securities    
Statement [Line Items]    
Short-term investments 59.7 25.0
Cost | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 102.6 100.2
Cost | Marketable equity securities    
Statement [Line Items]    
Equity securities 494.6 493.2
Estimate of Fair Value Measurement    
Statement [Line Items]    
Cash equivalents 1,506.9 1,088.4
Estimate of Fair Value Measurement | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 29.2 32.1
Noncurrent investments 140.2 148.1
Estimate of Fair Value Measurement | Corporate debt securities    
Statement [Line Items]    
Short-term investments 65.3 52.0
Noncurrent investments 211.4 214.3
Estimate of Fair Value Measurement | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 165.3 157.3
Estimate of Fair Value Measurement | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.6  
Noncurrent investments 56.7 53.5
Estimate of Fair Value Measurement | Other securities    
Statement [Line Items]    
Short-term investments 59.7 25.0
Estimate of Fair Value Measurement | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 150.3 197.4
Estimate of Fair Value Measurement | Marketable equity securities    
Statement [Line Items]    
Equity securities 485.5 711.3
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Statement [Line Items]    
Cash equivalents 1,494.1 1,079.3
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 29.2 32.1
Noncurrent investments 140.2 148.1
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Statement [Line Items]    
Short-term investments 0.0 0.0
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.0  
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities    
Statement [Line Items]    
Short-term investments 0.0 0.0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 0.0 0.0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Marketable equity securities    
Statement [Line Items]    
Equity securities 485.5 711.3
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)    
Statement [Line Items]    
Cash equivalents 12.8 9.1
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 0.0 0.0
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Statement [Line Items]    
Short-term investments 65.3 52.0
Noncurrent investments 211.4 214.3
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 165.3 157.3
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.6  
Noncurrent investments 56.7 53.5
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Other securities    
Statement [Line Items]    
Short-term investments 16.7 13.6
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 6.3 23.5
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Marketable equity securities    
Statement [Line Items]    
Equity securities 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)    
Statement [Line Items]    
Cash equivalents 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | U.S. government and agency securities    
Statement [Line Items]    
Short-term investments 0.0 0.0
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Statement [Line Items]    
Short-term investments 0.0 0.0
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities    
Statement [Line Items]    
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Asset-backed securities    
Statement [Line Items]    
Short-term investments 0.0  
Noncurrent investments 0.0 0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Other securities    
Statement [Line Items]    
Short-term investments 43.0 11.4
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Other securities, noncurrent investments    
Statement [Line Items]    
Equity securities 144.0 173.9
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Marketable equity securities    
Statement [Line Items]    
Equity securities $ 0.0 $ 0.0