Fair Value Measurement of Assets and Liabilities - Financial Assets and Liabilities Measured at Fair Value, Recurring (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Assets:
Restricted cash included in long-term investments	$ 3,737
Short-term investments
Assets:
Restricted cash included in long-term investments	2,521	$ 4,199
Equity investments with readily determinable fair values	104	1,745
Long-term investments
Assets:
Restricted cash included in long-term investments	1,216	1,727
Corporate debt securities | Short-term investments
Assets:
Restricted cash included in long-term investments	2,350	4,152
Corporate debt securities | Long-term investments
Assets:
Restricted cash included in long-term investments	646	950
Government and agency securities | Short-term investments
Assets:
Restricted cash included in long-term investments	135	25
Government and agency securities | Long-term investments
Assets:
Restricted cash included in long-term investments	557	777
Fair Value, Measurements, Recurring
Assets:
Cash and cash equivalents	2,154	1,379
Derivatives	336	553
Total financial assets	$ 9,454	$ 15,719
Derivative Asset, Statement of Financial Position, Extensible Enumeration,	Derivatives	Derivatives
Liabilities:
Other liabilities	$ 14
Derivatives	$ 47	$ 17
Derivative Liability, Statement of Financial Position, Extensible Enumeration, Not Disclosed Flag	Derivatives	Derivatives
Fair Value, Measurements, Recurring | Adevinta
Assets:
Equity method investments	$ 2,692	$ 5,391
Fair Value, Measurements, Recurring | Short-term investments
Assets:
Restricted cash	36	22
Equity investments with readily determinable fair values	104	1,745
Total short-term investments	2,625	5,944
Fair Value, Measurements, Recurring | Long-term investments
Assets:
Restricted cash	13
Total long-term investments	1,647	2,452
Fair Value, Measurements, Recurring | Long-term investments | Equity investment under the fair value option
Assets:
Equity method investments	431	725
Fair Value, Measurements, Recurring | Corporate debt securities | Short-term investments
Assets:
Restricted cash included in long-term investments	2,350	4,152
Fair Value, Measurements, Recurring | Corporate debt securities | Long-term investments
Assets:
Restricted cash included in long-term investments	646	950
Fair Value, Measurements, Recurring | Government and agency securities | Short-term investments
Assets:
Restricted cash included in long-term investments	135	25
Fair Value, Measurements, Recurring | Government and agency securities | Long-term investments
Assets:
Restricted cash included in long-term investments	557	777
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and cash equivalents	2,154	1,379
Derivatives	0	0
Total financial assets	4,999	8,537
Liabilities:
Other liabilities	0
Derivatives	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Adevinta
Assets:
Equity method investments	2,692	5,391
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Short-term investments
Assets:
Restricted cash	36	22
Equity investments with readily determinable fair values	104	1,745
Total short-term investments	140	1,767
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term investments
Assets:
Restricted cash	13
Total long-term investments	13	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term investments | Equity investment under the fair value option
Assets:
Equity method investments	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities | Short-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities | Long-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government and agency securities | Short-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government and agency securities | Long-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Cash and cash equivalents	0	0
Derivatives	122	109
Total financial assets	3,810	6,013
Liabilities:
Other liabilities	0
Derivatives	47	17
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Adevinta
Assets:
Equity method investments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Short-term investments
Assets:
Restricted cash	0	0
Equity investments with readily determinable fair values	0	0
Total short-term investments	2,485	4,177
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Long-term investments
Assets:
Restricted cash	0
Total long-term investments	1,203	1,727
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Long-term investments | Equity investment under the fair value option
Assets:
Equity method investments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Short-term investments
Assets:
Restricted cash included in long-term investments	2,350	4,152
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Long-term investments
Assets:
Restricted cash included in long-term investments	646	950
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Short-term investments
Assets:
Restricted cash included in long-term investments	135	25
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Government and agency securities | Long-term investments
Assets:
Restricted cash included in long-term investments	557	777
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	0	0
Derivatives	214	444
Total financial assets	645	1,169
Liabilities:
Other liabilities	14
Derivatives	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Adevinta
Assets:
Equity method investments	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Short-term investments
Assets:
Restricted cash	0	0
Equity investments with readily determinable fair values	0	0
Total short-term investments	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Long-term investments
Assets:
Restricted cash	0
Total long-term investments	431	725
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Long-term investments | Equity investment under the fair value option
Assets:
Equity method investments	431	725
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Short-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Long-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Government and agency securities | Short-term investments
Assets:
Restricted cash included in long-term investments	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Government and agency securities | Long-term investments
Assets:
Restricted cash included in long-term investments	$ 0	$ 0