GOODWILL AND OTHER INTANGIBLE ASSETS Intangible assets included in Other assets and intangibles (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Total intangible assets, gross	$ 1,138	$ 1,190
Total intangible assets, net	437	460
Finite-lived intangible assets, accumulated amortization	701	730
Customer lists and relationships [Member]
Finite-lived intangible assets, gross	397	410
Finite-lived intangible assets, accumulated amortization	209	204
Finite-lived intangible assets, net	188	206
Trademarks, trade names and other [Member]
Finite-lived intangible assets, gross	37	24
Finite-lived intangible assets, accumulated amortization	20	15
Finite-lived intangible assets, net	17	9
Non-amortized trade names and other [Member]
Indefinite-lived intangible assets, carrying amount	99	99
Capitalized software [Member]
Finite-lived intangible assets, gross	605	657
Finite-lived intangible assets, accumulated amortization	472	511
Finite-lived intangible assets, net	$ 133	$ 146
Weighted average [Member]
Finite-lived intangible assets, useful life	8 years 9 months 18 days
Weighted average [Member] | Customer lists and relationships [Member]
Finite-lived intangible assets, useful life	14 years 4 months 24 days
Weighted average [Member] | Trademarks, trade names and other [Member]
Finite-lived intangible assets, useful life	13 years 9 months 18 days
Weighted average [Member] | Capitalized software [Member]
Finite-lived intangible assets, useful life	4 years 3 months 18 days