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Investments (Investment and Other Income (Loss), Net) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Investments [Abstract]
Equity in net income (losses) of investees, net	$ 959	$ 300	$ 1,095	$ (368)
Realized and unrealized gains (losses) on equity securities, net	189	5	426	(53)
Other income (loss), net	69	115	87	125
Investment and other income (loss), net	1,216	420	1,607	(296)
Unrealized gains (losses) recognized	$ 153	$ (79)	$ 264	$ (120)

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Nonoperating income (losses), net recorded in the income statement that are not separately stated.

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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