Investments - Equity Investments (Details) $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($)
Increase (Decrease) In Equity Investments [Roll Forward]
Marketable securities, beginning balance	$ 506
Marketable securities, Purchases	0
Marketable securities, Sales	(104)
Marketable securities, Changes in Fair Value	(69)
Marketable Securities, Other	(147)
Marketable securities, ending balance	186
Nonmarketable securities, beginning balance	1,223
Nonmarketable Securities, Purchases	28
Nonmarketable Securities, Sales	0
Nonmarketable Securities, Changes in Fair Value	0
Nonmarketable Securities, Other	164
Nonmarketable securities, ending balance	1,415
Total equity investments, beginning balance	1,729
Total equity investments, Purchases	28
Total equity investments, Sales	(104)
Total equity investments, Changes in Fair Value	(69)
Total equity investments, other	17
Total equity investments, ending balance	$ 1,601

Equity Method Investments, Other

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Increase (Decrease) In Equity Investments [Roll Forward]

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- Definition

Marketable Securities, Other

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Nonmarketable Securities

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- Definition

Nonmarketable Securities, Gains (Losses)

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No definition available.

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Nonmarketable Securities, Other

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Nonmarketable Securities, Purchases

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- Definition

Nonmarketable Securities, Sales

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- Definition

Amount of the entity's equity method investment which has been sold.

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No definition available.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

Amount of investment in marketable security.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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- Definition

Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

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No definition available.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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- Definition

Amount of cash outflow for purchase of marketable security.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

+ References

No definition available.

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