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PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS
As a result of the Company’s separation from DowDuPont, the number of defined benefit pension plans administered by the Company decreased from 45 plans to 35 plans, of which approximately $270 million of net unfunded pension liabilities transferred to DowDuPont. Plans administered by other subsidiaries of DowDuPont that were transferred to the Company were not significant. There were no changes in the number of other postretirement benefit plans administered by the Company as a result of the separation. Existing Company plans that were significantly impacted by the transfer of active plan participants to DowDuPont were remeasured, resulting in curtailment gains and losses and recognition of special termination benefits.

A summary of the Company's pension plans and other postretirement benefits can be found in Note 19 to the Consolidated Financial Statements included in TDCC’s Annual Report on Form 10-K for the year ended December 31, 2018. 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 Ended
Six Months Ended
In millions
Jun 30,
2019
Jun 30,
2018
Jun 30,
2019
Jun 30,
2018
Defined Benefit Pension Plans:
 
 
 
 
Service cost
$
95

$
132

$
207

$
265

Interest cost
227

217

468

435

Expected return on plan assets
(421
)
(404
)
(838
)
(810
)
Amortization of prior service credit
(5
)
(6
)
(11
)
(12
)
Amortization of net loss
147

170

279

341

Curtailment/special termination benefits 1
(27
)
—

(27
)
—

Net periodic benefit cost
$
16

$
109

$
78

$
219

Less: discontinued operations
—

25

21

50

Net periodic benefit cost - continuing operations
$
16

$
84

$
57

$
169

 
 
 
 
 
Other Postretirement Benefits:
 
 
 
 
Service cost
$
2

$
3

$
4

$
6

Interest cost
12

11

26

22

Amortization of net gain
(5
)
(6
)
(11
)
(12
)
Curtailment/special termination benefits 1
(3
)
—

(3
)
—

Net periodic benefit cost
$
6

$
8

$
16

$
16

Less: discontinued operations
—

1

—

2

Net periodic benefit cost - continuing operations
$
6

$
7

$
16

$
14


1.
The 2019 impact relates to plan curtailments and associated special termination benefits resulting from the reduction in plan participation by employees transferred to DowDuPont.

Net periodic benefit cost, other than the service cost component, is included in "Sundry income (expense) - net" in the consolidated statements of income.

The Company's funding policy is to contribute to defined benefit pension plans in the United States and a number of other countries when pension laws and/or economics either require or encourage funding. The Company expects to contribute approximately $285 million to its pension plans in 2019, of which $152 million has been contributed through June 30, 2019.