Debt and Derivatives - Narrative (Details) - USD ($)	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018	May 24, 2019	May 23, 2019
Debt Instrument [Line Items]
Average interest rate	3.80%
Long-term debt, carrying amount	$ 2,539,705,000	$ 2,537,507,000
(Payments) issuance of commercial paper, net	(112,500,000)	112,500,000	$ (50,500,000)
Letters of credit outstanding, amount	120,600,000	120,600,000
Long-term Debt, Fiscal Year Maturity [Abstract]
Maturities of long term debt, next twelve months	0.0
Maturities of long term debt, year two	900,000,000.0
Maturities of long term debt, year three	350,000,000.0
Maturities of long term debt, year four	0.0
Maturities of long term debt, year five	50,000,000.0
Interest paid	105,500,000	101,800,000	122,100,000
Commercial paper	0	112,500,000
Borrowings on revolving credit facility	0	0
Amortization of interest rate lock agreement, net of tax benefit of $463, $717 and $571, respectively	(1,433,000)	(1,179,000)	(933,000)
Inventory
Long-term Debt, Fiscal Year Maturity [Abstract]
Unrecognized purchase commitments	117,600,000
Purchases related to unrecognized commitments	32,700,000
Other comprehensive Income
Long-term Debt, Fiscal Year Maturity [Abstract]
Amortization of interest rate lock agreement, net of tax benefit of $463, $717 and $571, respectively	1,400,000	$ 1,200,000	$ 900,000
Commercial paper
Debt Instrument [Line Items]
Average interest rate		2.70%
Senior notes | 2020 interest rate locks | Designated as Hedging Instrument | Cash Flow Hedging
Long-term Debt, Fiscal Year Maturity [Abstract]
Derivative notional amount	950,000,000.0
Interest rate lock agreements - assets	1,500,000
Interest rate lock agreements - liabilities	53,800,000
Senior notes | 2019 interest rate locks | Designated as Hedging Instrument | Cash Flow Hedging
Long-term Debt, Fiscal Year Maturity [Abstract]
Derivative notional amount		$ 500,000,000.0
Interest rate lock agreements - liabilities	111,900,000	36,400,000
Term Notes Due Through 2037 | Unsecured Debt
Debt Instrument [Line Items]
Long-term debt, carrying amount	2,550,000,000.0	2,866,200,000
Long-term debt, fair value	$ 2,804,200,000	$ 2,998,700,000
Credit agreement
Long-term Debt, Fiscal Year Maturity [Abstract]
Line of credit facility, accordion feature, increase limit (up to)				$ 250,000,000.0
Credit agreement | Revolving Credit Facility
Long-term Debt, Fiscal Year Maturity [Abstract]
Revolving credit facility, maximum borrowing capacity with accordion feature				1,000,000,000.0	$ 600,000,000.0
Credit agreement | Term loan
Long-term Debt, Fiscal Year Maturity [Abstract]
Revolving credit facility, maximum borrowing capacity with accordion feature				$ 200,000,000.0