Inventories (Narrative) (Details) - USD ($) $ in Millions	Sep. 27, 2015	Dec. 28, 2014
Inventory Disclosure [Abstract]
Inventories at average cost or FIFO methods	$ 257.4	$ 241.8
Inventories at cost as per LIFO	$ 104.0	$ 98.1

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766

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