GOODWILL AND OTHER INTANGIBLE ASSETS Balances and Changes in Carrying Amounts of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance		$ 429	$ 429	$ 424
Impairment			(58)
Translation			(6)	5
Goodwill, ending balance	$ 365		365	429
Goodwill, Impairment Loss, Excluding Divested Businesses	0		0
United States [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance		192	192	192
Impairment			0
Translation			0	0
Goodwill, ending balance	192		192	192
Canada [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance		126	126	120
Impairment			0
Translation			(5)	6
Goodwill, ending balance	121		121	126
Other Businesses [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance		111	111	112
Impairment		$ (58)	(58)
Translation			(1)	(1)
Goodwill, ending balance	$ 52		$ 52	$ 111