Leases - Supplemental Cash Flow Information (Details) $ in Millions	6 Months Ended
	Jun. 29, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Financing cash flows from finance leases	$ 0.7
Operating cash flows from finance leases	0.1
Operating cash flows from operating leases	11.7
ROU assets obtained in exchange for new lease obligations:
Finance lease liabilities	1.1
Operating lease liabilities	$ 6.2