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RETIREMENT PLANS (Tables)
9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Net Periodic Pension Expense for Qualified and Nonqualified U.S. Defined Benefit Plans [Table Text Block]
Net periodic pension expense for our qualified and nonqualified U.S. defined benefit plans comprised the following: 
 
Three Months Ended
September 30
 
Nine Months Ended
September 30,
In millions
2015
 
2014
 
2015
 
2014
Service cost
$
40

 
$
35

 
$
120

 
$
108

Interest cost
149

 
150

 
448

 
450

Expected return on plan assets
(196
)
 
(190
)
 
(588
)
 
(571
)
Actuarial loss
107

 
94

 
322

 
280

Amortization of prior service cost
11

 
7

 
33

 
23

Settlement
15

 

 
15

 

Net periodic pension expense
$
126

 
$
96

 
$
350

 
$
290