v3.25.1
Background, Description of the Business, and Basis of Presentation - Summary of Revised Interim Consolidated Statements of Comprehensive (Loss) Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2024
Sep. 30, 2024
Dec. 31, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
Net income (loss) $ (4) $ (32) $ 60 $ 54 $ 113 $ 81 $ 70
Comprehensive loss 25 (38) (13) 54 40 2 (23)
Comprehensive loss attributable to Chemours $ 25 (38) (13) 54 40 2 (23)
As reported [Member]              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
Net income (loss)   (27) 70 52 121 94 86
Comprehensive loss   (33) (3) 52 48 15 (7)
Comprehensive loss attributable to Chemours   (33) (3) 52 48 15 (7)
Adjustments [Member]              
Error Corrections and Prior Period Adjustments Restatement [Line Items]              
Net income (loss)   (5) (10) 2 (8) (13) (16)
Comprehensive loss   (5) (10) 2 (8) (13) (16)
Comprehensive loss attributable to Chemours   $ (5) $ (10) $ 2 $ (8) $ (13) $ (16)