Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 23, 2020	Feb. 28, 2021	Feb. 23, 2020
Net income
Pre-Tax Amount	$ 383.3	$ 273.6	$ 1,260.0	$ 782.0
Tax (Expense) Benefit	(101.6)	(68.9)	(269.0)	(141.5)
Net income	281.7	204.7	991.0	640.5
Unrealized derivative adjustments
Pre-Tax Amount	0.6	(0.3)	1.1	(3.0)
Tax (Expense) Benefit	(0.1)	0.1	(0.3)	0.8
After-Tax Amount	0.5	(0.2)	0.8	(2.2)
Reclassification for derivative adjustments included in net income
Pre-Tax Amount	(0.8)	(0.9)	(2.9)	(2.5)
Tax (Expense) Benefit	0.2	0.2	0.7	0.6
After-Tax Amount	(0.6)	(0.7)	(2.2)	(1.9)
Unrealized currency translation gains (losses)
Pre-Tax Amount	0.7	3.7	29.5	(5.0)
Tax (Expense) Benefit	(0.6)	0.1	(1.2)	0.7
After-Tax Amount	0.1	3.8	28.3	(4.3)
Unrealized pension and post-employment benefit obligations
Pre-Tax Amount	0.0	77.6	0.4	62.8
Tax (Expense) Benefit	0.0	(19.4)	(0.1)	(15.7)
After-Tax Amount	0.0	58.2	0.3	47.1
Reclassification for pension and post-employment benefit obligations included in net income
Pre-Tax Amount	(0.8)	(2.8)	(2.4)	(4.2)
Tax (Expense) Benefit	0.2	0.6	0.6	1.0
After-Tax Amount	(0.6)	(2.2)	(1.8)	(3.2)
Comprehensive income
Pre-Tax Amount	383.0	350.9	1,285.7	830.1
Tax (Expense) Benefit	(101.9)	(87.3)	(269.3)	(154.1)
After-Tax Amount	281.1	263.6	1,016.4	676.0
Comprehensive income (loss) attributable to noncontrolling interests
Pre-Tax Amount	0.5	0.4	3.8	(0.7)
Tax (Expense) Benefit	(0.2)	(0.2)	(0.6)	(0.3)
After-Tax Amount	0.3	0.2	3.2	(1.0)
Comprehensive income attributable to Conagra Brands, Inc.
Pre-Tax Amount	382.5	350.5	1,281.9	830.8
Tax (Expense) Benefit	(101.7)	(87.1)	(268.7)	(153.8)
After-Tax Amount	$ 280.8	$ 263.4	$ 1,013.2	$ 677.0