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Fair Value Measurements - Financial Instruments Not Required to be Measured at Fair Value (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Carrying Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Marketable securities, current | $ 53 | $ 130
Carrying Value | Level 2 | 2028 Notes (4.250% Senior Notes) |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 505 | 541
Carrying Value | Level 2 | 2029 Notes (1.125% Convertible Senior Notes) |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 565 | 563
Carrying Value | Level 3 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Notes receivable, including noncurrent portion | 10 | 9
Fair Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Marketable securities, current | 53 | 130
Fair Value | Level 2 | 2028 Notes (4.250% Senior Notes) |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 502 | 517
Fair Value | Level 2 | 2029 Notes (1.125% Convertible Senior Notes) |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 683 | 725
Fair Value | Level 3 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Notes receivable, including noncurrent portion | 10 | 9
Cash | Carrying Value | Level 1 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,833 | 1,613
Cash | Fair Value | Level 1 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,833 | 1,613
Cash Equivalents | Carrying Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 943 | 1,216
Cash Equivalents | Fair Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | $ 943 | $ 1,216

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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/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 Reference 4: 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 5: 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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