FAIR VALUE MEASUREMENTS - Reconciliation of Fair Value Measurements that Use Significant Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Indemnifications related to Kidney Care separation
Contingent payments related to acquisitions
Fair value at beginning of period	$ 0
Additions	67
Payments	(14)
Fair value at end of period	53	$ 53
Contingent payments related to acquisitions
Contingent payments related to acquisitions
Fair value at beginning of period		12	$ 14
Additions		0	0
Change in fair value recognized in earnings		2	0
Payments		(5)	(2)
Transfers out of Level 3		(2)	0
Fair value at end of period	7	7	12
Available-for-sale debt securities
Available-for-sale debt securities
Fair value at beginning of period		1	1
Additions		0	0
Change in fair value recognized in earnings		0	0
Payments		0	0
Transfers out of Level 3		0	0
Fair value at end of period	$ 1	$ 1	$ 1

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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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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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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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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