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Business Combinations, Asset Acquisitions, and Joint Venture Formation (Details) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2025 USD ($) restaurants	Jun. 30, 2026 USD ($) restaurants	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) restaurants
Asset Acquisition [Line Items]
Number of Stores \| restaurants		64,000
Goodwill	$ 969	$ 716		$ 969
Business Combination, Consideration Transferred				$ 1
Other
Asset Acquisition [Line Items]
Payments to Acquire Long-Term Investments		$ 5	$ 98
TB U.S. Store Acquisition
Asset Acquisition [Line Items]
Number of Stores \| restaurants	128			128
TB U.S. Store Acquisition
Asset Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 666
TB U.S. Store Acquisition
Asset Acquisition [Line Items]
Acquisition of The Habit Restaurants, Inc., net of cash acquired	$ 667