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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies - Principles of Consolidation and Research and Development (Details) - USD ($) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022
Significant accounting policies
Maturity period of cash equivalents	90 days
Business Combinations
Impairment of long-lived assets and goodwill (Note 2)	$ 6			$ 0
Advertising Costs
Advertising expenses	365	$ 480	$ 431
Research and Development
Research and development costs	$ 42	$ 45	$ 29
Minimum
Property and Equipment
Useful life of property and equipment	2 years
Business Combinations
Amortization of finite lived intangible assets useful life	13 years
Maximum
Property and Equipment
Useful life of property and equipment	40 years
Business Combinations
Amortization of finite lived intangible assets useful life	20 years
Long-Term Deferred Revenue and Other Long-Term Liabilities
Deferred upfront payment, amortization period	10 years