Acquisitions and Divestitures - Consideration Paid and Provisional Assets Acquired and Liabilities Assumed (Details) € in Millions, $ in Millions						3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
		Oct. 30, 2020 USD ($) brand	Oct. 30, 2020 EUR (€) brand	Apr. 01, 2020 USD ($)	Jul. 01, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Cash consideration - net of cash acquired									$ 168.5	$ 747.7	$ 0.0
Assets acquired:
Goodwill						$ 3,768.8	$ 4,116.7	$ 3,768.8	3,768.8	4,116.7	3,979.8
Liabilities assumed:
Adjustment to goodwill									1.6
Sanofi Brands
Business Acquisition [Line Items]
Number of brands acquired | brand		3	3
Purchase consideration		$ 62.3	€ 53.3
Prepayment of contract consideration						2.0		2.0	2.0
Liabilities assumed:
Finite lived assets, useful life		18 years 9 months 18 days	18 years 9 months 18 days
Oral Care Assets of High Ridge Brands (Dr. Fresh)
Business Acquisition [Line Items]
Purchase consideration				$ 113.0
Purchase price paid								106.2
General transaction costs								4.4
Net sales since acquisition								72.3
Net income since acquisition								2.1
Inventory costs stepped up to acquisition date fair value								2.0
Assets acquired:
Accounts receivable						13.1		13.1	13.1
Inventories						22.2		22.2	22.2
Prepaid expenses and other current assets						0.4		0.4	0.4
Property, plant and equipment, net						0.7		0.7	0.7
Operating lease assets						2.6		2.6	2.6
Goodwill						17.2		17.2	17.2
Total intangible assets						66.1		66.1	66.1
Total assets						122.3		122.3	122.3
Liabilities assumed:
Accounts payable						6.1		6.1	6.1
Other accrued liabilities						3.8		3.8	3.8
Payroll and related taxes						0.7		0.7	0.7
Accrued customer programs						3.0		3.0	3.0
Other non-current liabilities						2.5		2.5	2.5
Total liabilities						16.1		16.1	16.1
Net assets acquired						106.2		106.2	106.2
Finite lived assets, useful life				17 years 9 months 18 days
Adjustment to reduce the acquired value of inventory						(1.2)
Adjustment to goodwill						1.2
Adjustment to cost of sales						(1.2)
Ranir Global Holdings, LLC
Business Acquisition [Line Items]
Purchase price paid					$ 759.2
Percentage of interest acquired					100.00%
Base consideration transferred					$ 750.0
Cash consideration - net of cash acquired					747.7
Net sales since acquisition							151.4
Net income since acquisition							7.6
Inventory costs stepped up to acquisition date fair value							5.7
Assets acquired:
Cash and cash equivalents					11.5
Accounts receivable					40.6
Inventories					59.0
Prepaid expenses and other current assets					4.0
Property, plant and equipment, net					40.8
Operating lease assets					3.7
Goodwill					292.7
Total intangible assets					389.3
Other non-current assets					2.8
Total assets					844.4
Liabilities assumed:
Accounts payable					17.6
Other accrued liabilities					7.7
Payroll and related taxes					5.5
Accrued customer programs					5.7
Deferred income taxes					45.9
Other non-current liabilities					2.8
Total liabilities					85.2
Net assets acquired					759.2
Tax deductible goodwill					252.3
In-process research and development | Ranir Global Holdings, LLC
Assets acquired:
Indefinite-lived intangibles					39.7
CSCA
Assets acquired:
Goodwill						1,905.0	1,899.1	1,905.0	1,905.0	1,899.1	1,713.7
Liabilities assumed:
Adjustment to goodwill									(10.4)
CSCA | Ranir Global Holdings, LLC
Assets acquired:
Goodwill						212.6		212.6	212.6
CSCI
Assets acquired:
Goodwill	[1]					1,190.7	$ 1,203.7	1,190.7	1,190.7	$ 1,203.7	$ 1,151.3
Liabilities assumed:
Adjustment to goodwill	[1]								12.0
CSCI | Ranir Global Holdings, LLC
Assets acquired:
Goodwill						80.1		80.1	80.1
Distribution and License Agreements and Supply Agreements | Oral Care Assets of High Ridge Brands (Dr. Fresh)
Assets acquired:
Definite-lived intangibles						2.2		2.2	2.2
Developed product technology, formulations, and product rights | Oral Care Assets of High Ridge Brands (Dr. Fresh)
Assets acquired:
Definite-lived intangibles						0.1		0.1	0.1
Developed product technology, formulations, and product rights | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles					$ 48.6
Liabilities assumed:
Finite lived assets, useful life					10 years
Customer relationships and distribution networks | Oral Care Assets of High Ridge Brands (Dr. Fresh)
Assets acquired:
Definite-lived intangibles						20.6		20.6	20.6
Customer relationships and distribution networks | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles					$ 260.0
Liabilities assumed:
Finite lived assets, useful life					24 years
Trademarks, trade names, and brands | Sanofi Brands
Assets acquired:
Definite-lived intangibles		$ 52.5
Trademarks, trade names, and brands | Oral Care Assets of High Ridge Brands (Dr. Fresh)
Assets acquired:
Definite-lived intangibles						$ 43.2		$ 43.2	$ 43.2
Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Assets acquired:
Definite-lived intangibles					$ 41.0
Minimum | Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Liabilities assumed:
Finite lived assets, useful life					20 years
Maximum | Trademarks, trade names, and brands | Ranir Global Holdings, LLC
Liabilities assumed:
Finite lived assets, useful life					25 years

[1] (1) We had accumulated goodwill impairments of $868.4 million as of December 31, 2019 and December 31, 2020.