Subsequent Events (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Sep. 30, 2015	Jul. 28, 2015	Jun. 30, 2015	Jun. 23, 2015	Jan. 21, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Chemours shares distributed to DD stockholders				1
Common stock, par value			$ 0.30	$ 0.30		$ 0.30
Shares of DD common stock converted				5
Chemours [Member]
Subsequent Event [Line Items]
Common stock, par value				$ 0.01
Minimum [Member] | Chemours [Member]
Subsequent Event [Line Items]
Curtailment gain	$ 230
Maximum [Member] | Chemours [Member]
Subsequent Event [Line Items]
Curtailment gain	$ 240
2015 Share Buyback Plan [Member]
Subsequent Event [Line Items]
2015 Share buyback announcement					$ 4,000
2015 Share Buyback Plan [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Share buyback plan, Authorized Amount		$ 2,000