Goodwill and Other Intangible Assets (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Goodwill
Goodwill, Beginning Balance	$ 2,365
Effect of exchange rate changes	(8)
Goodwill, Ending Balance	2,357
Ammonia
Goodwill
Goodwill, Beginning Balance	587
Effect of exchange rate changes	(1)
Goodwill, Ending Balance	586
Granular Urea
Goodwill
Goodwill, Beginning Balance	828
Effect of exchange rate changes	0
Goodwill, Ending Balance	828
UAN
Goodwill
Goodwill, Beginning Balance	576
Effect of exchange rate changes	0
Goodwill, Ending Balance	576
AN
Goodwill
Goodwill, Beginning Balance	302
Effect of exchange rate changes	(6)
Goodwill, Ending Balance	296
Other
Goodwill
Goodwill, Beginning Balance	72
Effect of exchange rate changes	(1)
Goodwill, Ending Balance	$ 71

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant