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Summary of Significant Accounting Policies Activity in Goodwill by Segment (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2023	$ 3,040.0
Net restaurant purchases (sales)	179.0
Currency translation	(74.0)
Balance at December 31, 2024	3,145.0
U.S.
Goodwill [Roll Forward]
Balance at December 31, 2023	1,833.0
Net restaurant purchases (sales)	18.0
Currency translation	0.0
Balance at December 31, 2024	1,851.0
International Operated Markets
Goodwill [Roll Forward]
Balance at December 31, 2023	1,207.0
Net restaurant purchases (sales)	3.0
Currency translation	(78.0)
Balance at December 31, 2024	1,132.0
International Developmental Licensed Markets & Corporate
Goodwill [Roll Forward]
Balance at December 31, 2023	0.0
Net restaurant purchases (sales)	158.0
Currency translation	4.0
Balance at December 31, 2024	$ 162.0

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