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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	May 31, 2017	May 31, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,193	$ 2,310
Long-Term Debt, Gross, Fair Value Disclosure	2,159	2,394
Other	49	84
Other Long-Term Debt, Fair Value Disclosure	49	84
Less current maturities	(81)	(39)
Long-Term Debt, Current Maturities, Fair Value Disclosure	(81)	(39)
Debt issuance costs and discounts, net of amortization	(22)	(23)
Debt Instrument, Unamortized, Discount (Premium) And Debt Issuance Costs, Net, Fair Value	(22)	(23)
Long-term debt (less current maturities and debt issuance costs and discounts)	2,090	2,248
Long-Term Debt, Excluding Current Maturities, Fair Value Disclosure	2,056	2,332
British pound term loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	174	195
Long-term Debt, Fair Value	174	195
Euro term loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	126	132
Long-term Debt, Fair Value	126	132
Canadian dollar revolving credit facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	44	99
Long-term Debt, Fair Value	44	99
Unsecured Senior Notes, 4.60% [Member] | Senior notes [Member]
Debt Instrument [Line Items]
Long-term debt, gross	1,000	1,000
Long-term Debt, Fair Value	$ 1,026	1,089
Stated interest rate	4.60%				4.60%
Unsecured Senior Notes, 3.75% [Member] | Senior notes [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 400	400
Long-term Debt, Fair Value	$ 357	384
Stated interest rate	3.75%			3.75%
Unsecured Senior Notes, 4.20% [Member] | Senior notes [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 400	400
Long-term Debt, Fair Value	$ 383	$ 411
Stated interest rate	4.20%		4.20%

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