Goodwill and Intangible Assets (Identifiable Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013
Identifiable Intanglble Assets [Roll Forward]
Beginning balance	$ 184.4	$ 199.3
Effect of changes in exchange rates	(18.0)	(14.9)
Ending balance	$ 166.4	$ 184.4

Amount before accumulated amortization of intangible assets, excluding goodwill.

No definition available.

Name:	us-gaap_IntangibleAssetsGrossExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant