Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 32	$ (390)	$ 1,608	$ 658
Cumulative Translation Adjustments	(264)	68	(424)	(507)
Unrealized Gain (Loss) on Investments	0	0	10	0
Derivatives Instruments	11	(20)	107	(16)
Total other comprehensive (loss) income	(400)	49	(755)	(526)
Comprehensive income (loss)	(368)	(341)	853	132
Comprehensive Income Attributable to Noncontrolling Interest - Net of Tax	2	2	8	18
Comprehensive Income (Loss) Attributable to Corteva	(370)	(343)	845	114
Pension Plan
Adjustments to benefit plans	10	0	26	(6)
Other Benefit Plans
Adjustments to benefit plans	(157)	1	(474)	3
EID [Member]
Net income	23	(404)	1,578	596
Cumulative Translation Adjustments	(264)	68	(424)	(507)
Unrealized Gain (Loss) on Investments	0	0	10	0
Derivatives Instruments	11	(20)	107	(16)
Total other comprehensive (loss) income	(400)	49	(755)	(526)
Comprehensive income (loss)	(377)	(355)	823	70
Comprehensive Income Attributable to Noncontrolling Interest - Net of Tax	(1)	0	0	11
Comprehensive Income (Loss) Attributable to Corteva	(376)	(355)	823	59
EID [Member] | Pension Plan
Adjustments to benefit plans	10	0	26	(6)
EID [Member] | Other Benefit Plans
Adjustments to benefit plans	$ (157)	$ 1	$ (474)	$ 3