Investments - Other Long-Term Investments (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Other long term investments, including held for sale assets	$ 4,446	$ 4,181
Real estate investments
Schedule of Investments [Line Items]
Other long-term investments	1,724	1,606
Securities partnerships
Schedule of Investments [Line Items]
Other long-term investments	2,504	2,400
Other
Schedule of Investments [Line Items]
Other long term investments, including held for sale assets	$ 218	$ 175