BK China - Schedule of Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]
Net cash used for operating activities from discontinued operations	$ (9)	$ (15)
Net cash used for investing activities from discontinued operations	(3)	0
Net cash used for financing activities from discontinued operations	(15)	(11)
Net cash used for discontinued operations	$ (27)	$ (26)

No definition available.

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- Definition

Amount of cash inflow (outflow) from financing activity attributable to discontinued operation. Financing activity includes, but is not limited to, obtaining resource from owner and providing return on, and return of, their investment; borrowing money and repaying amount borrowed, or settling obligation; and obtaining and paying for other resource obtained from creditor on long-term credit.

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- Definition

Amount of cash inflow (outflow) from investing activity attributable to discontinued operation. Investing activity includes, but is not limited to, making and collecting loan, acquiring and disposing of debt and equity instruments, property, plant, and equipment, and other productive assets.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-24

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-5B

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- Definition

Amount of cash inflow (outflow) from operating activity attributable to discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity.

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- Definition

Amount of cash inflow (outflow) from operating, investing, and financing activities; attributable to discontinued operation.

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