Combined and Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Aug. 25, 2019	Aug. 26, 2018
Other comprehensive income (loss) Pre-Tax Amount:
Net income	$ 152.4	$ 145.7
Reclassification of post-retirement benefits out of accumulated other comprehensive income (loss)	0.2	0.2
Unrealized currency translation losses	(9.1)	(4.3)
Comprehensive income (loss)	143.5	141.6
Less: Comprehensive income attributable to noncontrolling interests		3.6
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	143.5	138.0
Other comprehensive income (loss) Tax (Expense) Benefit:
Net income	(36.7)	(34.3)
Reclassification of post-retirement benefits out of accumulated other comprehensive income (loss)		(0.1)
Comprehensive income (loss)	(36.7)	(34.4)
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	(36.7)	(34.4)
Other comprehensive income (loss) After Tax Amount:
Net income	115.7	111.4
Reclassification of post-retirement benefits out of accumulated other comprehensive income (loss)	0.2	0.1
Unrealized currency translation losses	(9.1)	(4.3)
Comprehensive income (loss)	106.8	107.2
Less: Comprehensive income attributable to noncontrolling interests		3.6
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	$ 106.8	$ 103.6