PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Defined Benefit Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 103		$ 118
Interest cost	276		253
Expected return on plan assets	(332)		(312)
Amortization of prior service cost	6		6
Amortization of net (gain) loss	126		197
Settlements	2	[1]	0	[1]
Net periodic benefit cost	181		262
Other Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	4		5
Interest cost	18		20
Amortization of prior service cost	0		(1)
Amortization of net (gain) loss	(4)		0
Net periodic benefit cost	$ 18		$ 24

[1] The 2014 impact relates to settlements associated with the wind-up of a Canadian pension plan.