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Restructuring (Restructuring Charges) (Details) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) facility	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 498.7	$ 376.5	$ 267.4	$ 267.4
Charges	172.8	251.9	313.6
Reimbursable restructuring charges		26.4
Cash payment	(211.0)	(76.8)	(50.3)
Utilization	(87.3)	(80.8)	(151.0)
Foreign currency translation	(2.6)	1.5	(3.2)
Ending Balance	370.6	$ 498.7	376.5	370.6
Corporate / Other
Restructuring Reserve [Roll Forward]
Charges	2.2			25.5
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	138.7			520.3
Greater China
Restructuring Reserve [Roll Forward]
Charges				5.3
JANZ
Restructuring Reserve [Roll Forward]
Charges	27.4			136.4
Emerging Markets
Restructuring Reserve [Roll Forward]
Charges	4.5			50.8
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	494.0	371.7	262.6	262.6
Charges	64.2	169.0	161.6
Reimbursable restructuring charges		26.4
Cash payment	(189.2)	(74.7)	(49.2)
Utilization	0.0	0.0	0.0
Foreign currency translation	(2.6)	1.6	(3.3)
Ending Balance	366.4	494.0	371.7	366.4
Other Exit Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	4.7	4.8	4.8	4.8
Charges	108.6	82.9	152.0
Reimbursable restructuring charges		0.0
Cash payment	(21.8)	(2.1)	(1.1)
Utilization	(87.3)	(80.8)	(151.0)
Foreign currency translation	0.0	(0.1)	0.1
Ending Balance	$ 4.2	$ 4.7	$ 4.8	$ 4.2