Combined and Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 24, 2019	Nov. 25, 2018	Nov. 24, 2019	Nov. 25, 2018
Condensed Combined and Consolidated Statements of Earnings
Net sales	$ 1,019.2	$ 911.4	$ 2,008.2	$ 1,826.3
Net sales, type	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of sales	$ 734.1	$ 662.4	$ 1,474.5	$ 1,346.7
Cost of sales, type	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit	$ 285.1	$ 249.0	$ 533.7	$ 479.6
Selling, general and administrative expenses	91.6	75.0	170.2	153.0
Income from operations	193.5	174.0	363.5	326.6
Interest expense, net	25.4	26.2	53.6	53.0
Income before income taxes and equity method earnings	168.1	147.8	309.9	273.6
Income tax expense	42.7	34.0	79.4	68.3
Equity method investment earnings	15.0	10.2	25.6	30.1
Net income	140.4	124.0	256.1	235.4
Less: Income attributable to noncontrolling interests		5.0		8.6
Net income attributable to Lamb Weston Holdings, Inc.	$ 140.4	$ 119.0	$ 256.1	$ 226.8
Earnings per share
Basic (in dollars per share)	$ 0.96	$ 0.74	$ 1.75	$ 1.47
Diluted (in dollars per share)	$ 0.95	$ 0.74	$ 1.74	$ 1.47