PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The following table provides the components of TDCC's net periodic benefit cost for all significant plans:

Net Periodic Benefit Cost for All Significant Plans	Three Months Ended
In millions	Mar 31, 2019			Mar 31, 2018
Defined Benefit Pension Plans:
Service cost	$	112		$	133
Interest cost	241			218
Expected return on plan assets	(417		)	(406		)
Amortization of prior service credit	(6		)	(6		)
Amortization of net loss	132			171
Net periodic benefit cost	$	62		$	110
Other Postretirement Benefits:
Service cost	$	2		$	3
Interest cost	14			11
Amortization of net gain	(6		)	(6		)
Net periodic benefit cost	$	10		$	8