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RETIREMENT PLANS (Tables)
 9 Months Ended
Sep. 30, 2016
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
2016
 
2015
 
2016
 
2015
Service cost
$
41

 
$
40

 
$
114

 
$
120

Interest cost
135

 
149

 
449

 
448

Expected return on plan assets
(199
)
 
(196
)
 
(611
)
 
(588
)
Actuarial loss
103

 
107

 
293

 
322

Amortization of prior service cost
11

 
11

 
31

 
33

Settlement
3

 
15

 
442

 
15

Net periodic pension expense
$
94

 
$
126

 
$
718

 
$
350