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Investments in Affiliates - Schedule of Investments in Affiliates (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments in Affiliates
Investments in affiliates	$ 167	$ 162	$ 160	$ 173
Chemours-Mitsui Fluorochemicals Company, Ltd. [Member] | Japan [Member]
Investments in Affiliates
Investments in affiliates	$ 104	$ 96
Ownership	50.00%	50.00%
The Chemours Chenguang Fluoromaterials Company Limited [Member] | China [Member]
Investments in Affiliates
Investments in affiliates	$ 32	$ 33
Ownership	50.00%	50.00%
Changshu 3F Zhonghao New Chemical Materials Co., Ltd. [Member] | China [Member]
Investments in Affiliates
Investments in affiliates	$ 31	$ 33
Ownership	10.00%	10.00%

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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