Variable Interest Entity and Noncontrolling Interests - Cash flows of variable interest entity (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 5,749	$ 3,816	$ 3,425
Net cash used for investing activities	(5,468)	(3,101)	(2,138)
Net Cash Provided by (Used in) Financing Activities	(69)	(706)	(1,229)
Somers Holdings Ltd. \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Net Cash Provided by (Used in) Operating Activities	0	0	47
Net cash used for investing activities	0	0	96
Net Cash Provided by (Used in) Financing Activities	$ 0	$ 0	$ (2)

Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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