Leases (Maturities of Lease Liabilities) (Details) - USD ($) $ in Millions	Jun. 28, 2019	Jan. 01, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of fiscal year	$ 110.9
Due in year two	190.9
Due in year three	156.1
Due in year four	131.7
Due in year five	112.9
Due thereafter	387.2
Total operating lease payments	1,089.7
Less: imputed interest	124.4
Total operating lease liabilities	$ 965.3	$ 1,012.0