Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2019	Jun. 30, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	ck0001325676
Entity Registrant Name	CERES TACTICAL COMMODITY L.P.
Entity Central Index Key	0001325676
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 63,303,460
Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		80,470.8107
Class D [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		600.0580
Class Z [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		99.2020