PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Aggregate Notional Amount of Derivatives (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Notional Amount of Derivatives	$ 2,605	$ 2,306
Equity index instruments
Defined Benefit Plan Disclosure [Line Items]
Notional Amount of Derivatives	399	569
Forward contracts
Defined Benefit Plan Disclosure [Line Items]
Notional Amount of Derivatives	638	199
Swaps
Defined Benefit Plan Disclosure [Line Items]
Notional Amount of Derivatives	$ 1,568	$ 1,538