Cover Page	12 Months Ended
	Mar. 31, 2020 USD ($) shares
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	Motors Liquidation Co
Entity Central Index Key	0000040730
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	No
Entity Voluntary Filers	Yes
Entity Filer Category	Non-accelerated Filer
Entity Address, State or Province	DE
Entity Interactive Data Current	Yes
Entity Public Float | $	$ 0
Entity Common Stock, Shares Outstanding | shares	0
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false