PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Components of Net Periodic Benefit Costs (Credits) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 14	$ 16
Interest cost	69	60
Expected return on plan assets	(116)	(109)
Amortization of actuarial loss	31	55
Amortization of prior service cost (credit)	1	2
Total net periodic benefit cost (credit)	(1)	24
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	3	3
Amortization of actuarial loss	3	3
Amortization of prior service cost (credit)	(48)	(6)
Other	(4)	0
Total net periodic benefit cost (credit)	$ (46)	$ 0