GOODWILL - Change in Balance of Goodwill (Details) - Goodwill - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at beginning of year	$ 12,239	$ 14,129
Acquisitions through business combinations	736	50
Impairment	(85)	(793)
Dispositions	(157)	(638)
Assets reclassified as held for sale	0	14
Foreign currency translation	577	(523)
Balance at end of year	13,310	12,239
Healthcare Services Operations
Reconciliation of changes in intangible assets and goodwill [abstract]
Impairment	$ (71)	$ (661)

The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Intangible assets and goodwill]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2025-01-01
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- Definition

The decrease in intangible assets and goodwill resulting from classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2025-01-01
-Paragraph 118
-Subparagraph e
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The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2025-01-01
-Paragraph 118
-Subparagraph e
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The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2025-01-01
-Paragraph 118
-Subparagraph e
-Clause vii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e_vii&doctype=Standard
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- Definition

The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
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No definition available.

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