Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 27, 2016	Nov. 29, 2015	Nov. 27, 2016	Nov. 29, 2015
Net income
Pre-Tax Amount	$ 243.2	$ 248.3	$ 651.2	$ (1,291.2)
Tax (Expense) Benefit	(117.3)	(89.0)	(335.3)	298.1
Net income (loss)	125.9	159.3	315.9	(993.1)
Unrealized derivative adjustments
Pre-Tax Amount	2.2	0.0	(5.8)	0.0
Tax (Expense) Benefit	(0.9)	0.0	2.2	0.0
After-Tax Amount	1.3	0.0	(3.6)	0.0
Unrealized gains on available-for-sale securities
Pre-Tax Amount	0.2	0.0	0.4	0.0
Tax (Expense) Benefit	0.0	0.0	(0.1)	0.0
After-Tax Amount	0.2	0.0	0.3	0.0
Unrealized currency translation losses
Pre-Tax Amount	(14.1)	(18.4)	(26.0)	(56.0)
Tax (Expense) Benefit	0.0	0.0	0.2	0.0
After-Tax Amount	(14.1)	(18.4)	(25.8)	(56.0)
Unrealized pension and post-employment benefit obligations
Pre-Tax Amount	66.8	0.0	64.7	6.6
Tax (Expense) Benefit	(25.6)	0.0	(25.5)	(1.6)
After-Tax Amount	41.2	0.0	39.2	5.0
Reclassification for pension and post-employment benefit obligations included in net income
Pre-Tax Amount	(0.9)	(1.3)	(1.8)	(2.6)
Tax (Expense) Benefit	0.4	0.5	0.7	1.0
After-Tax Amount	(0.5)	(0.8)	(1.1)	(1.6)
Comprehensive income (loss)
Pre-Tax Amount	297.4	228.6	682.7	(1,343.2)
Tax (Expense) Benefit	(143.4)	(88.5)	(357.8)	297.5
After-Tax Amount	154.0	140.1	324.9	(1,045.7)
Comprehensive income attributable to noncontrolling interests
Pre-Tax Amount	2.2	3.7	6.0	2.6
Tax (Expense) Benefit	(0.1)	(0.2)	(0.2)	(0.5)
After-Tax Amount	2.1	3.5	5.8	2.1
Comprehensive income (loss) attributable to Conagra Brands, Inc.
Pre-Tax Amount	295.2	224.9	676.7	(1,345.8)
Tax (Expense) Benefit	(143.3)	(88.3)	(357.6)	298.0
After-Tax Amount	$ 151.9	$ 136.6	$ 319.1	$ (1,047.8)