Earnings Per Share of Common Stock (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]

Earnings (Loss) Per Share Calculations - Basic	For the Year Ended December 31,
(Dollars per share)	2021		2020		2019
Earnings (loss) per share of common stock from continuing operations	$	2.46	$	0.98	$	(0.38)
(Loss) earnings per share of common stock from discontinued operations	(0.07)		(0.07)		(0.90)
Earnings (loss) per share of common stock	$	2.39	$	0.91	$	(1.28)

Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block]

Earnings (Loss) Per Share Calculations - Diluted	For the Year Ended December 31,
(Dollars per share)	2021		2020		2019
Earnings (loss) per share of common stock from continuing operations	$	2.44	$	0.98	$	(0.38)
(Loss) earnings per share of common stock from discontinued operations	(0.07)		(0.07)		(0.90)
Earnings (loss) per share of common stock	$	2.37	$	0.91	$	(1.28)

Share Count Information [Table Text Block]

Share Count Information	For the Year Ended December 31,
(Shares in millions)	2021	2020	2019
Weighted-average common shares - basic1	735.9	748.7	749.5
Plus dilutive effect of equity compensation plans2	5.7	2.5	—
Weighted-average common shares - diluted	741.6	751.2	749.5
Potential shares of common stock excluded from EPS calculations3	2.8	9.4	14.4

1.Share amounts for all periods prior to the Corteva Distribution were based on 748.8 million shares of Corteva, Inc. common stock distributed to holders of DowDuPont's common stock on June 1, 2019, plus 0.6 million of additional shares in which accelerated vesting conditions have been met.

2.Diluted earnings (loss) per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect.

3.These outstanding potential shares of common stock relating to stock options, restricted stock units and performance-based restricted stock units were excluded from the calculation of diluted earnings (loss) per share because (i) the effect of including stock options and restricted stock units would have been anti-dilutive; and (ii) the performance metrics have not yet been achieved for the outstanding potential shares relating to performance-based restricted stock units, which are deemed to be contingently issuable.

Earnings Per Share of Common Stock Reconciliation

Net Income (Loss) for Earnings Per Share Calculations - Basic and Diluted	For the Year Ended December 31,
(In millions)	2021		2020		2019
Income (loss) from continuing operations after income taxes	$	1,822	$	756	$	(270)
Net income (loss) attributable to continuing operations noncontrolling interests	10		20		13
Income (loss) from continuing operations attributable to Corteva common stockholders	1,812		736		(283)
(Loss) income from discontinued operations, net of tax	(53)		(55)		(671)
Net income (loss) attributable to discontinued operations noncontrolling interests	—		—		5
(Loss) income from discontinued operations attributable to Corteva common stockholders	(53)		(55)		(676)
Net income (loss) attributable to common stockholders	$	1,759	$	681	$	(959)