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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)
9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
The following table provides the components of the Company's net periodic benefit cost for all significant plans:

Net Periodic Benefit Cost for All Significant Plans Three Months EndedNine Months Ended
In millionsSep 30, 2022Sep 30, 2021Sep 30, 2022Sep 30, 2021
Defined Benefit Pension Plans
Service cost$97 $95 $295 $293 
Interest cost 170 151 512 444 
Expected return on plan assets (420)(434)(1,267)(1,291)
Amortization of prior service credit(5)(5)(16)(15)
Amortization of net loss163 198 495 622 
Curtailment gain— — — (19)
Net periodic benefit cost$$$19 $34 
Other Postretirement Benefit Plans
Service cost $$$$
Interest cost 20 17 
Amortization of net gain(3)(2)(11)(5)
Net periodic benefit cost$$$13 $18