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Earnings Per Share (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	1.0	3.7
Antidilutive securities excluded from computation of earnings per share, exercise price, lower range limit	$ 51.97	$ 41.08
Antidilutive securities excluded from computation of earnings per share, exercise price, upper range limit	$ 70.98	$ 60.37

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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