Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 26, 2023	Feb. 27, 2022	Feb. 26, 2023	Feb. 27, 2022
Net income, pre-tax amount	$ 442.3	$ 328.8	$ 883.9	$ 994.3
Net income, tax (expense) benefit	(100.1)	(109.9)	(237.0)	(263.8)
Net income, after-tax amount	342.2	218.9	646.9	730.5
Unrealized derivative adjustments, pre-tax amount	(3.5)	2.1	3.9	1.8
Unrealized derivative adjustments, tax (expense) benefit	0.8	(0.6)	(1.0)	(0.5)
Unrealized derivative adjustments, after-tax amount	(2.7)	1.5	2.9	1.3
Reclassification for derivative adjustments included in net income, pre-tax amount	(1.6)	(0.4)	(3.2)	(1.0)
Reclassification for derivative adjustments included in net income, tax (expense) benefit	0.4	0.2	0.9	0.3
Reclassification for derivative adjustments included in net income, after-tax amount	(1.2)	(0.2)	(2.3)	(0.7)
Unrealized currency translation gains	4.3	10.7	(17.5)	(22.7)
Unrealized currency translation losses, tax (expense) benefit	0.0	0.0	0.0	0.0
Unrealized currency translation losses, after-tax amount	4.3	10.7	(17.5)	(22.7)
Reclassification for pension and post-employment benefit obligations included in net income (loss), pre-tax amount	(1.1)	(0.9)	(3.4)	(2.6)
Reclassification for pension and post-employment benefit obligations included in net income (loss), tax (expense) benefit	0.3	0.3	1.0	0.8
Reclassification for pension and post-employment benefit obligations included in net income	(0.8)	(0.6)	(2.4)	(1.8)
Comprehensive income (loss), pre-tax amount	440.4	340.3	865.3	971.9
Comprehensive income, tax (expense) benefit	(98.6)	(110.0)	(236.1)	(263.4)
Comprehensive income, after-tax amount	341.8	230.3	629.2	708.5
Comprehensive income (loss) attributable to noncontrolling interests	(0.8)	0.6	(4.3)	(1.3)
Comprehensive loss attributable to noncontrolling interests, tax (expense) benefit	(0.2)	(0.2)	(0.3)	(0.4)
Comprehensive loss attributable to noncontrolling interests, after-tax amount	(1.0)	0.4	(4.6)	(1.7)
Comprehensive income attributable to Conagra Brands, Inc., pre-tax amount	441.2	339.7	869.6	973.2
Comprehensive income attributable to Conagra Brands, Inc., tax (expense) benefit	(98.4)	(109.8)	(235.8)	(263.0)
Comprehensive income attributable to Conagra Brands, Inc., after-tax amount	$ 342.8	$ 229.9	633.8	710.2
Unrealized pension and post-employment benefit obligations, pre-tax amount			1.6	2.1
Unrealized pension and post-employment benefit obligations, tax (expense) benefit			0.0	(0.2)
Unrealized pension and post-employment benefit obligations, after-tax amount			$ 1.6	$ 1.9