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Business Acquisitions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2026	Sep. 27, 2025	Sep. 26, 2026	Sep. 27, 2025	Dec. 27, 2025
Business Acquisition [Line Items]
Acquisition costs incurred	$ 0	$ 1	$ 3	$ 4
2026 Acquisitions [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired	90.00%		90.00%
2026 Acquisitions [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired	100.00%		100.00%
2025 Acquisitions [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired					60.00%
2025 Acquisitions [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired					100.00%
Acquisitions of Controlling Interests of Affiliates [Member]
Business Acquisition [Line Items]
Recognized gain related to remeasurement to fair value of previously held equity investment		$ 28	$ 11	$ 32
Business Combination Achieved In Stages Preacquisition Equity Interest In Acquiree Remeasurement Gain Loss Statement Of Income Or Comprehensive Income Extensible Enumeration			Selling, General and Administrative Expense