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Restructuring (Restructuring Charges) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) facility	Dec. 31, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 267.4
Charges	313.6
Cash payment	(50.3)
Utilization	(151.0)
Foreign currency translation	(3.2)
Ending Balance	376.5	$ 267.4
2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Facilities to be Eliminated \| facility		15
Restructuring and Related Cost, Expected Number of Positions Eliminated, Percent		20.00%
Minimum \| 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Settled without Cash	350.0
Restructuring Reserve [Roll Forward]
Charges		$ 1,100.0
Minimum \| 2020 Restructuring Plan \| Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining			$ 750.0
Maximum \| 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Settled without Cash	450.0
Restructuring Reserve [Roll Forward]
Charges		1,400.0
Maximum \| 2020 Restructuring Plan \| Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining			$ 950.0
Developed Markets
Restructuring Reserve [Roll Forward]
Charges	266.5
Greater China
Restructuring Reserve [Roll Forward]
Charges	5.3
JANZ
Restructuring Reserve [Roll Forward]
Charges	1.5
Emerging Markets
Restructuring Reserve [Roll Forward]
Charges	40.3
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	262.6
Charges	161.6
Cash payment	(49.2)
Utilization	0.0
Foreign currency translation	(3.3)
Ending Balance	371.7	262.6
Other Exit Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	4.8
Charges	152.0
Cash payment	(1.1)
Utilization	(151.0)
Foreign currency translation	0.1
Ending Balance	$ 4.8	$ 4.8