PROPERTY, PLANT AND EQUIPMENT - Summary of Non-cash Impairment Charges by Reportable Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		$ 9.1	$ 2.4
Software, Restructuring Related and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	$ 11.7	33.1
Cost of Revenues
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	10.8	25.3
Cost of Revenues | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	1.6	25.0
Cost of Revenues | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	9.2	0.3
Selling, General and Administrative Expenses
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.9	7.8	$ 7.3
Selling, General and Administrative Expenses | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		2.4
Selling, General and Administrative Expenses | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.9	5.4
North America RWCS | Software, Restructuring Related and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	2.5	9.0
North America RWCS | Cost of Revenues
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	2.0	7.7
North America RWCS | Cost of Revenues | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		7.4
North America RWCS | Cost of Revenues | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	2.0	0.3
North America RWCS | Selling, General and Administrative Expenses
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.5	1.3
North America RWCS | Selling, General and Administrative Expenses | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		1.0
North America RWCS | Selling, General and Administrative Expenses | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.5	0.3
International RWCS | Software, Restructuring Related and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	7.9	5.1
International RWCS | Cost of Revenues
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	7.5
International RWCS | Cost of Revenues | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.3
International RWCS | Cost of Revenues | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	7.2
International RWCS | Selling, General and Administrative Expenses
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.4	5.1
International RWCS | Selling, General and Administrative Expenses | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	0.4	5.1
All Other | Software, Restructuring Related and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	1.3	19.0
All Other | Cost of Revenues
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	1.3	17.6
All Other | Cost of Revenues | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	$ 1.3	17.6
All Other | Selling, General and Administrative Expenses
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		1.4
All Other | Selling, General and Administrative Expenses | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		$ 1.4