(Guarantees) (Details) $ in Millions		9 Months Ended
		Sep. 30, 2017 USD ($) yr month	Dec. 31, 2016 USD ($)
Customer and Supplier Guarantee, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guaranteed obligations maximum term | yr	[1]	5
Equity Affiliates, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guaranteed Obligations Maximum Term, Months | month	[2]	3
Chemours purchase obligations [Member]
Guarantor Obligations [Line Items]
Guaranteed Obligations Maximum Term, Months | month	[3]	12
Residual Value Guarantees [Member]
Guarantor Obligations [Line Items]
Guaranteed obligations maximum term | yr	[4]	12
Successor
Guarantor Obligations [Line Items]
Guarantee obligations		$ 323
Successor | Customer and Supplier Guarantee, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee obligations		$ 111
Collateral assets and personal guarantees percentage		16.00%
Successor | Equity Affiliates, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee obligations		$ 164
Successor | Chemours purchase obligations [Member]
Guarantor Obligations [Line Items]
Guarantee obligations		11
Successor | Residual Value Guarantees [Member]
Guarantor Obligations [Line Items]
Guarantee obligations		$ 37
Predecessor
Guarantor Obligations [Line Items]
Guarantee obligations			$ 388

[1] Existing guarantees for customers and suppliers, as part of contractual agreements.

[2] Existing guarantees for non-consolidated affiliates' liquidity needs in normal operations.

[3] Guarantee for Chemours' raw material purchase obligations under agreement with third party supplier.

[4] The company provides guarantees related to leased assets specifying the residual value that will be available to the lessor at lease termination through sale of the assets to the lessee or third parties.