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Other Intangible Assets
 9 Months Ended
Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Disclosure [Text Block] OTHER INTANGIBLE ASSETS
The gross carrying amounts and accumulated amortization of other intangible assets by major class are as follows: 
(In millions)September 30, 2021December 31, 2020September 30, 2020
 GrossAccumulated
Amortization		NetGrossAccumulated
Amortization		NetGrossAccumulated
Amortization		Net
Intangible assets subject to amortization (Definite-lived):
      
Germplasm$6,265 $(507)$5,758 $6,265 $(317)$5,948 $6,265 $(253)$6,012 
Customer-related
1,956 (460)1,496 1,984 (380)1,604 1,966 (352)1,614 
Developed technology
1,485 (641)844 1,451 (525)926 1,463 (499)964 
Trademarks/trade names1
2,012 (152)1,860 2,019 (99)1,920 161 (86)75 
Favorable supply contracts
475 (373)102 475 (302)173 475 (279)196 
Other2
407 (252)155 405 (239)166 405 (233)172 
Total other intangible assets with finite lives
12,600 (2,385)10,215 12,599 (1,862)10,737 10,735 (1,702)9,033 
Intangible assets not subject to amortization (Indefinite-lived):
      
IPR&D10 — 10 10 — 10 10 — 10 
Trade name1
1,871 — 1,871 
Total other intangible assets10 — 10 10 — 10 1,881 — 1,881 
Total$12,610 $(2,385)$10,225 $12,609 $(1,862)$10,747 $12,616 $(1,702)$10,914 
1.Beginning on October 1, 2020, the company changed its indefinite life assertion of its trade name asset to definite lived with a useful life of 25 years. This change is the result of the launch of BrevantTM seed in the retail channel in the U.S. Prior to changing the useful life of the trade name asset, the company tested the asset for impairment under ASC 350- Intangibles, Goodwill and Other, concluding the asset was not impaired.
2.Primarily consists of sales and farmer networks, marketing and manufacturing alliances and noncompetition agreements.

The aggregate pre-tax amortization expense from continuing operations for definite-lived intangible assets was $180 million and $543 million for the three and nine months ended September 30, 2021, respectively, and $162 million and $501 million for the three and nine months ended September 30, 2020, respectively. The current estimated aggregate pre-tax amortization expense from continuing operations for the remainder of 2021 and each of the next five years is approximately $178 million, $700 million, $620 million, $606 million, $569 million and $558 million, respectively.