Acquisitions and Divestitures - Narrative (Details) $ in Millions, € in Billions						3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 01, 2022 USD ($)	Apr. 29, 2022 USD ($)	Apr. 29, 2022 EUR (€)	Mar. 24, 2022 USD ($)	Mar. 09, 2022 USD ($)	Apr. 01, 2023 USD ($)	Sep. 30, 2023 USD ($)	Oct. 01, 2022 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Goodwill							$ 3,549.7		$ 3,490.4
Adjustment, cost of sales									3.5
Net proceeds from sale of businesses							0.0	$ 58.7
Gain (loss) on sale of business							0.0	$ (1.4)
Discontinued Operations, Disposed of by Sale
Business Acquisition [Line Items]
Installment receivable, period one					12 months
Installment receivable, period two					18 months
Consideration, installment receivables					$ 11.3
Contingent consideration					7.2
Discontinued Operations, Disposed of by Sale | Advent International
Business Acquisition [Line Items]
Total consideration					23.9
Net proceeds from sale of businesses					5.4
Discontinued Operations, Disposed of by Sale | Latin America Business
Business Acquisition [Line Items]
Gain (loss) on sale of business					$ (1.4)
CSCI
Business Acquisition [Line Items]
Goodwill							$ 1,472.1		$ 1,446.0
CSCI | ScarAway Member
Business Acquisition [Line Items]
Net proceeds from sale of businesses				$ 20.7
Gain (loss) on sale of business				$ 3.6
HRA Pharma
Business Acquisition [Line Items]
Outstanding equity interest acquired (percent)		100.00%	100.00%
Total consideration		$ 1,900.0	€ 1.8
Goodwill						$ 80.6
Definite-lived intangibles						104.3
Deferred income tax liabilities						27.2
Other non-current liabilities						2.0
Accounts payable						$ 1.5
Nestlé’s Gateway Infant Formula Plant and Good Start® infant formula
Business Acquisition [Line Items]
Total consideration	$ 110.0