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Fair Value Measurements Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following table summarizes the levels of fair value measurements of our financial assets:

			December 31, 2024												December 31, 2023
(in millions)			Total			Level 1			Level 2						Total			Level 1			Level 2
Money market funds			$	1,048		$	1,048		$	—					$	730		$	730		$	—
U.S. Treasury bills			16			16			—						16			16			—
			1,064			1,064			—						746			746			—
Deposits - money market funds			241			241			—						22			22			—
Total			$	1,305		$	1,305		$	—					$	768		$	768		$	—

Debt Securities, Available-for-sale

The following is a summary of our available-for-sale marketable securities:

(in millions)			Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Estimated Fair Value
December 31, 2024
U.S. Treasury bills			$	16		$	—		$	—		$	16
December 31, 2023
U.S. Treasury bills			$	16		$	—		$	—		$	16

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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