RETIREMENT PLANS Net Periodic Pension Expense for Qualified and Nonqualified U.S. Defined Benefit Plans (Details) - U.S. Plans - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 37	$ 39
Interest cost	156	149
Expected return on plan assets	(206)	(196)
Actuarial loss	94	119
Amortization of prior service cost	10	11
Net periodic benefit expense	$ 91	$ 122