Leases (Components of Lease Assets and Liabilities) (Details) - USD ($) $ in Millions	Aug. 25, 2019	May 26, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 3,996.7	$ 0.0
Finance lease right-of-use assets	130.9
Total lease assets, net	4,127.6
Operating lease liabilities - current	148.4
Finance lease liabilities - current	6.1
Operating lease liabilities - non-current	4,265.5	$ 0.0
Finance Lease, Liability, Noncurrent	262.7
Total lease liabilities	$ 4,682.7