Document and Entity Information	6 Months Ended
	Nov. 30, 2019 shares
Document and Entity Information
Entity Registrant Name	NATIONAL RURAL UTILITIES COOPERATIVE FINANCE CORP /DC/
Entity Central Index Key	0000070502
Document Type	10-Q
Document Period End Date	Nov. 30, 2019
Amendment Flag	false
Current Fiscal Year End Date	--05-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Small Business	false
Entity Emerging Growth Company	false