PENSION COSTS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Periodic Benefit Costs
Service cost	$ 51	$ 43	$ 153	$ 127
Interest cost	35	33	104	98
Expected return on plan assets	(54)	(44)	(160)	(132)
Amounts amortized	19	14	56	44
Net periodic benefit costs	51	46	153	137
Nonqualified Pension Plan [Member]
Net Periodic Benefit Costs
Employer contributions			$ 5