Earnings Per Share (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Earnings Per Share [Abstract]
Shares excluded from the calculation of the effect of dilutive securities	1.4	0.8	1.3	0.3
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Denominator for basic earnings per share (in shares)	44.8	44.8	44.7	44.8
Effect of dilutive securities (in shares)	0.2	0.3	0.3	0.3
Denominator for diluted earnings per share (in shares)	45.0	45.1	45.0	45.1