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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Defined Benefit Pension Plans [Member]	Dec. 31, 2011 Defined Benefit Pension Plans [Member]	Dec. 31, 2010 Defined Benefit Pension Plans [Member]	Dec. 31, 2012 Equity Securities [Member]	Dec. 31, 2012 Equity Securities [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2011 Equity Securities [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2012 Debt Securities [Member]	Dec. 31, 2012 Debt Securities [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2011 Debt Securities [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2012 Alternative Investments [Member]	Dec. 31, 2012 Alternative Investments [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2011 Alternative Investments [Member] Defined Benefit Pension Plans [Member]	Dec. 31, 2012 Other Pension Plan Asset Category [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	100.00%				25.00%			45.00%			25.00%			5.00%
Fair value of plan assets		$ 3,548	$ 3,351	$ 3,357		$ 808	$ 646		$ 1,675	$ 1,549		$ 667	$ 612

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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