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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	May 31, 2017	May 31, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,181	$ 2,193
Long-Term Debt, Gross, Fair Value Disclosure	2,440	2,159
Other	42	49
Other Long-Term Debt, Fair Value Disclosure	42	49
Less current maturities	(246)	(81)
Long-Term Debt, Current Maturities, Fair Value Disclosure	(246)	(81)
Debt issuance costs and discounts, net of amortization	(21)	(22)
Debt Instrument, Unamortized, Discount (Premium) And Debt Issuance Costs, Net, Fair Value	(21)	(22)
Long-term debt (less current maturities and debt issuance costs and discounts)	1,914	2,090
Long-Term Debt, Excluding Current Maturities, Fair Value Disclosure	2,173	2,056
British pound term loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	170	174
Long-term Debt, Fair Value	170	174
Euro term loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	123	126
Long-term Debt, Fair Value	123	126
Canadian dollar revolving credit facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	46	44
Long-term Debt, Fair Value	46	44
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	$ 1,194	1,026
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	$ 416	357
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	$ 449	$ 383
Stated interest rate	4.20%		4.20%

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