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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

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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