Balance Sheet and Cash Flows Supplemental Information - Additional Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Supplemental non cash information:
Capital expenditures acquired but not yet paid	$ 37	$ 23
Cristal, TiO2 Business
Supplemental non cash information:
Investing activities- shares issued in the Cristal Transaction	0	526
Financing activities - debt assumed	0	22
MGT Acquisition
Supplemental non cash information:
Investing activities - Acquisition of MGT assets	36	0
Financing activities - debt assumed	$ 36	$ 0

The amount of investments that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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