Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 26, 2017	Nov. 27, 2016	Nov. 26, 2017	Nov. 27, 2016
Net income
Pre-Tax Amount	$ 334.0	$ 243.2	$ 607.4	$ 651.2
Tax (Expense) Benefit	(109.5)	(117.3)	(229.6)	(335.3)
Net income	224.5	125.9	377.8	315.9
Unrealized derivative adjustments
Pre-Tax Amount	1.0	2.2	1.0	(5.8)
Tax (Expense) Benefit	(0.4)	(0.9)	(0.4)	2.2
After-Tax Amount	0.6	1.3	0.6	(3.6)
Reclassification for derivative adjustments included in net income
Pre-Tax Amount	0.1	0.0	0.1	0.0
Tax (Expense) Benefit	0.0	0.0	0.0	0.0
After-Tax Amount	0.1	0.0	0.1	0.0
Unrealized gains on available-for-sale securities
Pre-Tax Amount	0.4	0.2	0.7	0.4
Tax (Expense) Benefit	(0.2)	0.0	(0.3)	(0.1)
After-Tax Amount	0.2	0.2	0.4	0.3
Unrealized currency translation gains (losses)
Pre-Tax Amount	(12.7)	(14.1)	19.9	(26.0)
Tax (Expense) Benefit	0.1	0.0	0.0	0.2
After-Tax Amount	(12.6)	(14.1)	19.9	(25.8)
Unrealized pension and post-employment benefit obligations
Pre-Tax Amount	43.4	66.8	43.5	64.7
Tax (Expense) Benefit	(16.6)	(25.6)	(16.6)	(25.5)
After-Tax Amount	26.8	41.2	26.9	39.2
Reclassification for pension and post-employment benefit obligations included in net income
Pre-Tax Amount	(0.2)	(0.9)	(0.3)	(1.8)
Tax (Expense) Benefit	0.1	0.4	0.1	0.7
After-Tax Amount	(0.1)	(0.5)	(0.2)	(1.1)
Comprehensive income
Pre-Tax Amount	366.0	297.4	672.3	682.7
Tax (Expense) Benefit	(126.5)	(143.4)	(246.8)	(357.8)
After-Tax Amount	239.5	154.0	425.5	324.9
Comprehensive income attributable to noncontrolling interests
Pre-Tax Amount	0.4	2.2	2.4	6.0
Tax (Expense) Benefit	(0.4)	(0.1)	(0.6)	(0.2)
After-Tax Amount	0.0	2.1	1.8	5.8
Comprehensive income attributable to Conagra Brands, Inc.
Pre-Tax Amount	365.6	295.2	669.9	676.7
Tax (Expense) Benefit	(126.1)	(143.3)	(246.2)	(357.6)
After-Tax Amount	$ 239.5	$ 151.9	$ 423.7	$ 319.1