Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	May 26, 2019	May 27, 2018	May 28, 2017
Net income
Pre-Tax Amount	$ 900.0	$ 972.3	$ 989.2
Tax (Expense) Benefit	(221.6)	(160.5)	(341.2)
Net income	678.4	811.8	648.0
Unrealized derivative adjustments
Pre-Tax Amount	45.5
Tax (Expense) Benefit	(11.4)
After-Tax Amount	34.1
Pre-Tax Amount		2.9	(1.0)
Tax (Expense) Benefit		(0.9)	0.4
After-Tax Amount		2.0	(0.6)
Reclassification for derivative adjustments included in net income
Pre-Tax Amount	(1.9)	0.1	(0.2)
Tax (Expense) Benefit	0.5	0.0	0.1
After-Tax Amount	(1.4)	0.1	(0.1)
Unrealized gains on available-for-sale securities
Pre-Tax Amount	0.0	1.1	0.5
Tax (Expense) Benefit	0.0	(0.3)	(0.2)
After-Tax Amount	0.0	0.8	0.3
Unrealized currency translation gains (losses)
Pre-Tax Amount	(10.2)	0.8	(13.6)
Tax (Expense) Benefit	0.0	(0.1)	0.2
After-Tax Amount	(10.2)	0.7	(13.4)
Reclassification for currency translation losses included in net income
Pre-Tax Amount	10.4	0.0	0.0
Tax (Expense) Benefit	0.0	0.0	0.0
After-Tax Amount	10.4	0.0	0.0
Unrealized pension and post-employment benefit obligations
Pre-Tax Amount	(43.8)	157.3	209.2
Tax (Expense) Benefit	10.9	(45.0)	(80.6)
After-Tax Amount	(32.9)	112.3	128.6
Reclassification for pension and post-employment benefit obligations included in net income
Pre-Tax Amount	(1.5)	0.9	10.4
Tax (Expense) Benefit	0.4	(0.2)	(4.0)
After-Tax Amount	(1.1)	0.7	6.4
Comprehensive income
Pre-Tax Amount	898.5	1,135.4	1,194.5
Tax (Expense) Benefit	(221.2)	(207.0)	(425.3)
After-Tax Amount	677.3	928.4	769.2
Comprehensive income (loss) attributable to noncontrolling interests
Pre-Tax Amount	(1.7)	0.7	12.6
Tax (Expense) Benefit	(0.1)	(1.2)	(0.7)
After-Tax Amount	(1.8)	(0.5)	11.9
Comprehensive income attributable to Conagra Brands, Inc.
Pre-Tax Amount	900.2	1,134.7	1,181.9
Tax (Expense) Benefit	(221.1)	(205.8)	(424.6)
After-Tax Amount	$ 679.1	$ 928.9	$ 757.3