v3.26.1
Background, Description of the Business, and Basis of Presentation - Revised Consolidated Statements of Comprehensive (Loss) Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net loss $ (274) $ (379) $ (303) $ (384)
Unrealized (loss) gain on net investment hedge (5) (97) 22 (123)
Unrealized gain (loss) on net investment hedge, tax 10 23 0 30
Unrealized (loss) gain on net investment hedge (After-Tax) 5 (74) 22 (93)
Hedging activities, net pre- tax (1) (113) 35 (146)
Hedging activities, net, tax 10 25 (2) 33
Hedging activities, net (After-Tax) 9 (88) 33 (113)
Other Comprehensive income (loss) 15 48 15 81
Comprehensive loss (259) (331) (288) (303)
Comprehensive loss attributable to Chemours $ (259) (332) $ (288) (304)
As reported [Member]        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net loss   (380)   (384)
Unrealized (loss) gain on net investment hedge   (101)   (132)
Unrealized gain (loss) on net investment hedge, tax   24   32
Unrealized (loss) gain on net investment hedge (After-Tax)   (77)   (100)
Hedging activities, net pre- tax   (117)   (155)
Hedging activities, net, tax   26   35
Hedging activities, net (After-Tax)   (91)   (120)
Other Comprehensive income (loss)   45   74
Comprehensive loss   (335)   (310)
Comprehensive loss attributable to Chemours   (336)   (311)
Adjustments [Member]        
Error Corrections and Prior Period Adjustments Restatement [Line Items]        
Net loss   1   (0)
Unrealized (loss) gain on net investment hedge   4   9
Unrealized gain (loss) on net investment hedge, tax   (1)   (2)
Unrealized (loss) gain on net investment hedge (After-Tax)   3   7
Hedging activities, net pre- tax   4   9
Hedging activities, net, tax   (1)   (2)
Hedging activities, net (After-Tax)   3   7
Other Comprehensive income (loss)   3   7
Comprehensive loss   4   7
Comprehensive loss attributable to Chemours   $ 4   $ 7