RESTRUCTURING CHARGES - Restructuring and Related Charges Activity (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Charges incurred during period	$ 1.9
RGGA Program
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	101.9
Charges incurred during period	4.0
Charges incurred through end of period	105.9
RGGA Program | Total Restructuring Charges
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	76.6
Charges incurred during period	1.9
Charges incurred through end of period	78.5
RGGA Program | Employee Severance and Other Personnel Benefits
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	52.7
Charges incurred during period	0.5
Charges incurred through end of period	53.2
RGGA Program | Other
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	23.9
Charges incurred during period	1.4
Charges incurred through end of period	25.3
RGGA Program | Leases
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	17.7
Charges incurred during period	1.4
Charges incurred through end of period	19.1
RGGA Program | Other Related Charges
Restructuring Reserve [Roll Forward]
Charges incurred through beginning of period	7.6
Charges incurred during period	0.7
Charges incurred through end of period	$ 8.3