PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Net Periodic Benefit Cost for All Significant Plans

Net Periodic Benefit Cost for All Significant Plans	Three Months Ended						Nine Months Ended
In millions	Sep 30, 2015			Sep 30, 2014			Sep 30, 2015			Sep 30, 2014
Defined Benefit Pension Plans:
Service cost	$	11		$	7		$	33		$	23
Interest cost	41			46			123			138
Expected return on plan assets	(57		)	(58		)	(171		)	(174		)
Amortization of prior service cost	—			1			—			3
Amortization of net loss	22			17			66			51
Net periodic benefit cost	$	17		$	13		$	51		$	41
Other Postretirement Benefits:
Interest cost	$	3		$	3		$	9		$	9
Amortization of net gain	(3		)	(2		)	(9		)	(6		)
Net periodic benefit cost	$	—		$	1		$	—		$	3