Leases (Maturities of Lease Liabilities) (Details) $ in Millions	Aug. 25, 2019 USD ($) lease
Operating Leases
Weighted-Average Remaining Lease Term (Years)	17 years 3 months 18 days
Weighted-Average Discount Rate (Percent)	4.20%
Nine months ended May 31, 2020	$ 278.0
2021	374.4
2022	375.1
2023	378.8
2024	380.7
2025	385.3
Thereafter	4,331.6
Total future lease commitments	6,503.9
Less imputed interest	(2,090.0)
Present value of lease liabilities	4,413.9
Noncancelable lease commitments	3,010.0
Lease payments, not yet commenced	$ 127.0
Lease payments, not yet commenced, real estate leases | lease	27
Finance Leases
Weighted-Average Remaining Lease Term (Years)	18 years 4 months 24 days
Weighted-Average Discount Rate (Percent)	5.30%
Nine months ended May 31, 2020	$ 15.2
2021	21.8
2022	22.0
2023	22.3
2024	22.5
2025	22.6
Thereafter	311.5
Total future lease commitments	437.9
Less imputed interest	(169.1)
Present value of lease liabilities	268.8
Noncancelable lease commitments	$ 280.4