Share-Based Payments - Share-Based Compensation Expense Included In Statements Of Income (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
Sep. 26, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense		$ (75.0)	$ (64.8)	$ (224.0)	$ (217.8)
Subtotal		131.1	452.0	275.4	609.7
Capitalized share-based compensation costs		(2.4)	(2.6)	(8.0)	(8.5)
Share-based compensation expense included in total costs and expenses		128.7	449.4	267.4	601.2
Income tax effect		(24.2)	(98.5)	(50.5)	(126.5)
Selling, General and Administrative Expense		588.4	788.2	1,723.7	1,941.2
Reata Pharmaceuticals, Inc
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense		0.0	387.0	0.0	387.0
Operating expenses	$ 393.4
Selling, General and Administrative Expense	196.4
Research and development expense asset acquired	$ 197.0
Research and development
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense		69.8	217.1	124.5	276.3
Selling, general and administrative
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense		61.3	234.9	150.9	333.4
Total share-based compensation expense, net of tax
Share-based Compensation Expense included in consolidated statements of income
Share-based compensation expense		$ 104.5	$ 350.9	$ 216.9	$ 474.7

Share based compensation expense included in costs and expenses.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount, after tax, of expense for award under share-based payment arrangement.

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Amount of cost capitalized for award under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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