Document and Entity Information	9 Months Ended
	Dec. 31, 2018 shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	MTLQQ
Entity Registrant Name	Motors Liquidation Co
Entity Central Index Key	0000040730
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Common Stock, Shares Outstanding	0