Earnings Per Share (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Apr. 09, 2015	Sep. 28, 2014
Class of Stock [Line Items]
Common stock, par value	0.001			$ 0.001
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Out-of-the-money options	0.1	5.7
Subsequent Event [Member]
Class of Stock [Line Items]
Stock split conversion ratio			2
Common stock, par value			$ 0.001

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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