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Supplementary Information Other Income (Expense) - Net (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2021

Jun. 30, 2020

Jun. 30, 2021

Jun. 30, 2020

Equity in earnings / (losses) of affiliates - net

$ 2

$ (2)

$ 5

$ (3)

Net gain (loss) on sales of businesses and other assets

^[1]

1

16

1

(30)

Net exchange gains (losses)

^[2]

(14)

1

(49)

(60)

Non-operating pension and other post employment benefit credit

^[3]

328

91

653

182

Miscellaneous expenses - net

^[4]

(37)

(26)

(14)

(26)

Other income - net

298

89

635

90

Interest income

18

9

39

27

Hedging Program [Member]

Net exchange gains (losses)

(50)

14

(34)

179

Hedging Program [Member] | Argentine Peso Devaluation [Member]

Net exchange gains (losses)

14

22

37

31

Subsidiary Monetary Position

Net exchange gains (losses)

36

(13)

(15)

(239)

Segment Reconciling Items [Member]

Net exchange gains (losses)

14

(1)

49

60

Non-operating pension and other post employment benefit credit

(315)

(91)

(626)

(164)

Gain (Loss) on Disposition of Assets

^[5]

(53)

Interest income

$ (18)

$ (9)

$ (39)

(27)

Segment Reconciling Items [Member] | Crop Protection [Member]

Gain (Loss) on Disposition of Assets

(53)

Sale of JV [Member] | Segment Reconciling Items [Member] | Crop Protection [Member]

Gain (Loss) on Disposition of Assets

^[5]

$ (53)

[1]	The six months ended June 30, 2020 includes a loss of $(53) million relating to the sale of the La Porte site, for which the company signed an agreement in 2020, and closed during the first quarter of 2021.
[2]	Includes net pre-tax exchange losses of $14 million and $37 million associated with the devaluation of the Argentine peso for the three and six months ended June 30, 2021, respectively, and $22 million and $31 million for the three and six months ended June 30, 2020, respectively.
[3]	Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized gain (loss), amortization of prior service benefit and settlement loss).
[4]	Miscellaneous expense - net for the three and six months ended June 30, 2021 and 2020 includes losses on sale of receivables, tax indemnification adjustments related to changes in indemnification balances as a result of the application of the terms of the Tax Matters Agreement between Corteva and Dow and/or DuPont, and other items. Miscellaneous expense - net for the three and six months ended June 30, 2021 also includes a gain from remeasurement of an equity investment and realized losses on sale of available-for-sale securities.
[5]	Includes a loss recorded in other income - net related to the sale of the La Porte site.

X

- Definition

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