PROPERTY, PLANT AND EQUIPMENT - Summary of Non-cash Impairment Charges Recorded in and Related to Reportable Segments (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments	$ 2,400,000	$ 9,100,000		$ 0
Software and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		33,100,000
Domestic and Canada RCS | Software and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		9,000,000
International RCS | Software and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		5,100,000
All Other | Software and Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		19,000,000
COR
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		25,300,000
COR | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		25,000,000
COR | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		300,000
COR | Domestic and Canada RCS
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		7,700,000
COR | Domestic and Canada RCS | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		7,400,000
COR | Domestic and Canada RCS | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		300,000
COR | All Other
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		17,600,000
COR | All Other | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		17,600,000
Selling, General and Administrative Expenses
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		7,800,000	$ 7,300,000
Selling, General and Administrative Expenses | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		2,400,000
Selling, General and Administrative Expenses | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		5,400,000
Selling, General and Administrative Expenses | Domestic and Canada RCS
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		1,300,000
Selling, General and Administrative Expenses | Domestic and Canada RCS | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		1,000,000
Selling, General and Administrative Expenses | Domestic and Canada RCS | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		300,000
Selling, General and Administrative Expenses | International RCS
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		5,100,000
Selling, General and Administrative Expenses | International RCS | Other Property Plant and Equipment
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		5,100,000
Selling, General and Administrative Expenses | All Other
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		1,400,000
Selling, General and Administrative Expenses | All Other | Software
Impaired Long Lived Assets Held And Used [Line Items]
Total Impairments		$ 1,400,000