Combined and Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 25, 2018	Nov. 26, 2017	Nov. 25, 2018	Nov. 26, 2017
Other comprehensive income (loss) Pre-Tax Amount:
Net income	$ 158.0	$ 124.5	$ 303.7	$ 256.9
Reclassification of pension and post-retirement benefits out of accumulated other comprehensive income (loss)	0.2		0.4	(0.1)
Unrealized currency translation gains (losses)	(7.6)	(0.4)	(11.9)	14.8
Comprehensive income (loss)	150.6	124.1	292.2	271.6
Less: Comprehensive income attributable to noncontrolling interests	5.0	6.4	8.6	11.3
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	145.6	117.7	283.6	260.3
Other comprehensive income (loss) Tax (Expense) Benefit:
Net income	(34.0)	(41.5)	(68.3)	(85.6)
Reclassification of post-retirement benefits out of accumulated other comprehensive income (loss)			(0.1)
Comprehensive income (loss)	(34.0)	(41.5)	(68.4)	(85.6)
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	(34.0)	(41.5)	(68.4)	(85.6)
Other comprehensive income (loss) After Tax Amount:
Net income	124.0	83.0	235.4	171.3
Reclassification of post-retirement benefits out of accumulated other comprehensive income (loss)	0.2		0.3	(0.1)
Unrealized currency translation gains (losses)	(7.6)	(0.4)	(11.9)	14.8
Comprehensive income (loss)	116.6	82.6	223.8	186.0
Less: Comprehensive income attributable to noncontrolling interests	5.0	6.4	8.6	11.3
Comprehensive income (loss) attributable to Lamb Weston Holdings, Inc.	$ 111.6	$ 76.2	$ 215.2	$ 174.7