Restructuring (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		$ 125.2	$ 86.5	$ 892.2
2020 Restructuring Plan | Maximum
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring	$ 1,400.0
Non-cash charges mainly related to accelerated depreciation and asset impairment charges	450.0
Approximate expected severance and employee benefit expense	$ 950.0	950.0
Employee Severance | 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		17.6	38.2	396.1
Other Restructuring | 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		107.6	48.3	496.1
Developed Markets | Operating Segments
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		80.3	74.6	623.8
JANZ | Operating Segments
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		29.5	0.9	138.1
Greater China | Operating Segments
Restructuring Cost and Reserve [Line Items]
Expected total pre-tax charges for restructuring		$ 0.4	$ 2.5	$ 5.8