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, 2017	Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 40	$ 37
Interest cost	138	156
Expected return on plan assets	(192)	(206)
Actuarial loss	85	94
Amortization of prior service cost	7	10
Net periodic pension expense	$ 78	$ 91