Document and Entity Information - $ / shares	9 Months Ended
	Feb. 27, 2022	Mar. 31, 2022
Cover [Abstract]
Entity Central Index Key	0001679273
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Feb. 27, 2022
Entity File Number	1-37830
Entity Registrant Name	LAMB WESTON HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	61-1797411
Entity Address, Address Line One	599 S. Rivershore Lane
Entity Address, City or Town	Eagle
Entity Address, State or Province	ID
Entity Address, Postal Zip Code	83616
City Area Code	208
Local Phone Number	938-1047
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	LW
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		144,446,885
Entity Listing, Par Value Per Share	$ 1.00
Current Fiscal Year End Date	--05-29
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false