Background and Basis of Presentation Background and Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 27, 2015	Mar. 27, 2015
Operating Expense
Prior Period Reclassification Adjustment	$ 12.3	$ 23.5

The amount of a reclassification adjustment made to prior period financial statement amounts.

No definition available.

Name:	us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration