BASIS OF PRESENTATION - Intangible Assets Summary (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other intangible assets
Gross Carrying Amount	$ 2,614	$ 2,334
Accumulated Amortization	(761)	(659)
Net Book Value	1,853	1,675
Capitalized software costs
Other intangible assets
Gross Carrying Amount	1,565	1,456
Accumulated Amortization	(677)	(594)
Net Book Value	888	862
Trade names
Other intangible assets
Gross Carrying Amount	106	106
Net Book Value	106	106
Contracts
Other intangible assets
Gross Carrying Amount	847	653
Accumulated Amortization	(39)	(26)
Net Book Value	808	627
Other
Other intangible assets
Gross Carrying Amount	96	119
Accumulated Amortization	(45)	(39)
Net Book Value	$ 51	$ 80