Leases - Balance Sheet Location of Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 28, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 124.0	$ 129.9
Finance leases	27.9	27.6
Right-of-Use Asset	151.9	157.5
Present value of lease liabilities	152.7	158.2
Total operating lease liabilities	127.7	133.7
Total finance lease liabilities	25.0	24.5
Operating lease assets
Lessee, Lease, Description [Line Items]
Operating lease assets	124.0	129.9
Other non-current assets
Lessee, Lease, Description [Line Items]
Finance leases	27.9	27.6
Other accrued liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability, current	30.9	32.0
Current indebtedness
Lessee, Lease, Description [Line Items]
Finance lease liability, current	5.7	3.4
Other noncurrent liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability, noncurrent	96.8	101.7
Long-term debt, less current portion
Lessee, Lease, Description [Line Items]
Finance lease liability, noncurrent	19.3	21.1
CSCA
Lessee, Lease, Description [Line Items]
Operating lease assets	21.4	22.4
Finance leases	16.4	16.8
Total operating lease liabilities	21.5	22.8
Total finance lease liabilities	16.4	16.6
CSCI
Lessee, Lease, Description [Line Items]
Operating lease assets	39.3	41.6
Finance leases	5.7	5.8
Total operating lease liabilities	40.3	42.4
Total finance lease liabilities	2.7	2.9
RX
Lessee, Lease, Description [Line Items]
Operating lease assets	33.5	35.1
Finance leases	0.7	0.8
Total operating lease liabilities	34.7	36.3
Total finance lease liabilities	0.7	0.8
Unallocated
Lessee, Lease, Description [Line Items]
Operating lease assets	29.8	30.8
Finance leases	5.1	4.2
Total operating lease liabilities	31.2	32.2
Total finance lease liabilities	$ 5.2	$ 4.2