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Fair Value Measurements - Schedule of Reconciliation for Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024
Investment in Unconsolidated Subsidiaries
Investment in Unconsolidated Subsidiaries
Beginning balance	$ 457	$ 477
Transfer in (out)	0	0
Net change in fair value	11	(9)
Purchases / Additions	0	0
Sales / Payments	0	0
Ending balance	468	468
Other Assets
Other Assets
Beginning balance	31	16
Transfer in (out)	0	0
Net change in fair value	2	12
Purchases / Additions	4	9
Sales / Payments	0	0
Ending balance	37	37
Contingent Consideration
Contingent Consideration
Beginning balance	40	36
Transfer in (out)	0	0
Net change in fair value	1	(2)
Purchases / Additions	0	9
Sales / Payments	(4)	(6)
Ending balance	$ 37	$ 37

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Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

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