Investments - Equity Investments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Equity investments with readily determinable fair values	$ 4,240	$ 4,474
Total equity investments	4,765	5,004
Adevinta
Schedule of Investments [Line Items]
Equity investments with readily determinable fair values	4,240	4,474
Long-term investments:
Schedule of Investments [Line Items]
Equity investments	376	382
Equity investments under the equity method of accounting	56	55
Equity investments without readily determinable fair values	$ 93	$ 93