Equity - Non-redeemable and redeemable noncontrolling interest (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ 869
Distributions to noncontrolling interests	$ (2)	$ (3)	(31)	$ (53)
Ending balance	816		816
Non- Redeemable Noncontrolling Interests
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Distributions to noncontrolling interests	(2)	(3)	(31)	(53)
Non-Redeemable Noncontrolling Interest \| Non- Redeemable Noncontrolling Interests
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance	810	910	869	939
Net (loss) attributable to redeemable noncontrolling interest	(24)	(20)	(75)	(14)
Other comprehensive income (loss), net of tax	(1)	1	(2)	10
Changes in noncontrolling interests due to divestitures and acquisitions	0	0	1	(19)
Contributions from noncontrolling interests	32	18	53	43
Distributions to noncontrolling interests	(2)	(3)	(31)	(53)
Other	1	1	1	1
Ending balance	$ 816	$ 907	$ 816	$ 907

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Proceeds From Redeemable Noncontrolling Interest

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Amount of equity (deficit) attributable to noncontrolling interest. Excludes temporary equity.

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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Portion of net income (loss) attributable to nonredeemable noncontrolling interest.

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Amount of increase in noncontrolling interest from a business combination.

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Amount before tax of other comprehensive income (loss) attributable to noncontrolling interests.

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