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Fair Value Measurements - Financial Instruments Not Required to be Measured at Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
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	$ 79	$ 69
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	574	597
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	562	561
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	9	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	79	69
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	547	573
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	657	626
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	9	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	1,581	1,357
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	1,581	1,357
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	1,048	1,162
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	$ 1,048	$ 1,162

X

- 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
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-SubTopic 10
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-Section 50
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

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