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NONCONSOLIDATED AFFILIATES NONCONSOLIDATED AFFILIATES (Tables)
 3 Months Ended
Mar. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]  
Nonconsolidated Affiliates - Investments
TDCC's investments in companies accounted for using the equity method ("nonconsolidated affiliates"), by classification in the consolidated balance sheets, are shown in the following table:

Investments in Nonconsolidated Affiliates
Mar 31, 2019
Dec 31, 2018
In millions
Investment in nonconsolidated affiliates
$
3,321

$
3,823

Other noncurrent obligations
(870
)
(495
)
Net investment in nonconsolidated affiliates
$
2,451

$
3,328
Nonconsolidated Affiliates - HSC Group Investments
The following table reflects the carrying value of the HSC Group investments at March 31, 2019 and December 31, 2018:

Investment in the HSC Group
 
Investment
In millions
Balance Sheet Classification
Mar 31, 2019
Dec 31, 2018
Hemlock Semiconductor L.L.C.
Other noncurrent obligations
$
(658
)
$
(495
)
DC HSC Holdings LLC
Investment in nonconsolidated affiliates
$
485

$
535