Financial Instruments, Risk Management Activities, and Fair Values (Schedule Of Fair Value Measurement Inputs) (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2023	May 29, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	$ 13.7	$ 143.2
Other Assets, Fair Value Disclosure	160.8	324.8
Total Assets, Fair Value Disclosure	174.1	496.4
Derivative Liability, Fair Value	(108.2)	(54.6)
Other Liabilities, Fair Value Disclosure	0.0	0.0
Total Liabilities, Fair Value Disclosure	(111.4)	(52.8)
Carrying value	3,636.2	3,393.8
Long-Lived Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	1.0
Other Liabilities, Fair Value Disclosure	0.0
Non-cash impairment charge of long-lived assets	8.6
Carrying value	9.6
Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	10.3	26.9
Derivative Liability, Fair Value	(64.7)	(34.5)
Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	3.0	144.7
Derivative Liability, Fair Value	(46.7)	(18.3)
Level 1 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	122.7	255.3
Total Assets, Fair Value Disclosure	122.7	266.0
Other Liabilities, Fair Value Disclosure	0.0	0.0
Total Liabilities, Fair Value Disclosure	0.0	0.0
Level 1 [Member] | Long-Lived Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	0.0
Other Liabilities, Fair Value Disclosure	0.0
Level 1 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Level 1 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	10.7
Derivative Liability, Fair Value	0.0	0.0
Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	3.3	2.3
Total Assets, Fair Value Disclosure	16.6	163.2
Other Liabilities, Fair Value Disclosure	0.0	0.0
Total Liabilities, Fair Value Disclosure	(111.4)	(52.8)
Level 2 [Member] | Long-Lived Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	1.0
Other Liabilities, Fair Value Disclosure	0.0
Level 2 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	10.3	26.9
Derivative Liability, Fair Value	(64.7)	(34.5)
Level 2 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	3.0	134.0
Derivative Liability, Fair Value	(46.7)	(18.3)
Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	34.8	67.2
Total Assets, Fair Value Disclosure	34.8	67.2
Other Liabilities, Fair Value Disclosure	0.0	0.0
Total Liabilities, Fair Value Disclosure	0.0	0.0
Level 3 [Member] | Long-Lived Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	0.0
Other Liabilities, Fair Value Disclosure	0.0
Level 3 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Level 3 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Marketable Investments [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	159.8	324.8
Other Liabilities, Fair Value Disclosure	0.0	0.0
Marketable Investments [Member] | Level 1 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	122.7	255.3
Other Liabilities, Fair Value Disclosure	0.0	0.0
Marketable Investments [Member] | Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	2.3	2.3
Other Liabilities, Fair Value Disclosure	0.0	0.0
Marketable Investments [Member] | Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	34.8	67.2
Other Liabilities, Fair Value Disclosure	0.0	0.0
Interest Rate Contracts [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	(69.2)	(30.7)
Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	(62.2)	(29.8)
Interest Rate Contracts [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Interest Rate Contracts [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	(62.2)	(29.8)
Interest Rate Contracts [Member] | Level 3 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Foreign Exchange Contracts [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	10.4	35.3
Derivative Liability, Fair Value	(8.2)	(19.7)
Foreign Exchange Contracts [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	10.3	26.9
Derivative Liability, Fair Value	(2.5)	(4.7)
Foreign Exchange Contracts [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.2	8.4
Derivative Liability, Fair Value	(5.6)	(15.1)
Foreign Exchange Contracts [Member] | Level 1 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Foreign Exchange Contracts [Member] | Level 1 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Foreign Exchange Contracts [Member] | Level 2 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	10.3	26.9
Derivative Liability, Fair Value	(2.5)	(4.7)
Foreign Exchange Contracts [Member] | Level 2 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.2	8.4
Derivative Liability, Fair Value	(5.6)	(15.1)
Foreign Exchange Contracts [Member] | Level 3 [Member] | Designated as Hedging Instrument [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Foreign Exchange Contracts [Member] | Level 3 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Commodity Contracts [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.5	107.5
Derivative Liability, Fair Value	(29.3)	(0.2)
Commodity Contracts [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.5	107.6
Derivative Liability, Fair Value	(29.3)	(0.2)
Commodity Contracts [Member] | Level 1 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	10.7
Derivative Liability, Fair Value	0.0	0.0
Commodity Contracts [Member] | Level 2 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.5	96.9
Derivative Liability, Fair Value	(29.3)	(0.2)
Commodity Contracts [Member] | Level 3 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Grain contracts [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	2.3	28.7
Derivative Liability, Fair Value	(11.8)	(3.0)
Grain contracts [Member] | Level 1 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	0.0	0.0
Grain contracts [Member] | Level 2 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	2.3	28.7
Derivative Liability, Fair Value	(11.8)	(3.0)
Grain contracts [Member] | Level 3 [Member] | Not Designated as Hedging [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative Asset, Fair Value	0.0	0.0
Derivative Liability, Fair Value	$ 0.0	$ 0.0