Other Assets (Details) - USD ($) $ in Millions	Sep. 27, 2018	Dec. 31, 2017	Sep. 28, 2017	Dec. 31, 2016
Intangible assets
Total intangible assets	$ 8.2	$ 8.2
Intangible assets, net	1.5	1.8
Deferred financing costs	41.7	39.5
Less: Accumulated amortization-deferred financing costs	(35.3)	(33.7)
Deferred financing costs, net	6.4	5.8
Goodwill - Europe	2.4	2.5
Equity in net assets of affiliates	0.0	4.7
Customer Supply Agreement	16.3	19.9
Restricted Cash and Investments, Noncurrent	20.2	20.0	$ 20.0	$ 19.9
Deferred Tax Assets, Net, Noncurrent	194.9	72.5
Other	43.2	37.1
Total	284.9	164.3
Patents [Member]
Intangible assets
Total intangible assets	1.9	1.9
Less: Accumulated amortization	(1.9)	(1.8)
Favorable Leasehold Interests [Member]
Intangible assets
Total intangible assets	6.3	6.3
Less: Accumulated amortization	$ (4.8)	$ (4.6)