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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 6,781	$ 8,178	$ 17,678
Carrying/fair value of investments not included in cash and cash equivalents	1,481	1,097
Carrying Amount of Long-term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amount of long-term debt	10,810	14,612
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amount of long-term debt	$ 9,791	13,709
Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Maturity period of primarily bank time deposits, classified as cash equivalents, maximum	90 days
Nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets at fair value	$ 976	691
Level 3 | Nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets at fair value	324	521
Level 1 | Corporate Bond Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	9,243
Level 1 | Nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets at fair value	0	5
Level 2 | Other Long-term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	548
Level 2 | Nonrecurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets at fair value	$ 652	$ 165

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