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RESTRUCTURING ACTIVITIES (Narrative) (Details) (Invigorate Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 15us-gaap_RestructuringCharges	$ 9us-gaap_RestructuringCharges
Cost of Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	13	8
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	1
Scenario, Forecast [Member] \| Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation costs			25
Facility-related costs and asset impairment charges			10
Scenario, Forecast [Member] \| Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation costs			30
Facility-related costs and asset impairment charges			$ 15

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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