Leases (Supplemental Balance Sheet Inofrmation) (Details) - USD ($) $ in Millions	Jun. 28, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease ROU assets, other long term assets	$ 924.9	$ 971.0
Operating lease liabilities, accrued expenses and other liabilities	185.2
Operating lease liabilities, other long-term liabilities	780.1
Total operating lease liabilities	$ 965.3	$ 1,012.0
Weighted average remaining lease term	7 years
Weighted average discount rate	3.10%