Investments - Equity Investments (Details) $ in Millions	12 Months Ended
Dec. 31, 2025 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, beginning balance	$ 1,607
Equity securities, purchases	339
Equity securities, sales	(181)
Equity securities, changes in fair value	(88)
Equity securities, other	28
Equity securities, ending balance	1,705
Marketable Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, beginning balance	237
Equity securities, purchases	0
Equity securities, sales	(168)
Equity securities, changes in fair value	(86)
Equity securities, other	220
Equity securities, ending balance	203
Nonmarketable Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities, beginning balance	1,370
Equity securities, purchases	339
Equity securities, sales	(13)
Equity securities, changes in fair value	(2)
Equity securities, other	(192)
Equity securities, ending balance	$ 1,502

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

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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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