Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Earnings Per Share [Abstract]
Net earnings from continuing operations	$ 72.2	$ 61.0	$ 236.4	$ 197.2
Net earnings from discontinued operations, net of tax	3.7	43.4	14.3	52.8
Net earnings	$ 75.9	$ 104.4	$ 250.7	$ 250.0
Weighted average outstanding shares - basic (in shares)	92.7	93.7	93.3	93.5
Dilutive effect of common stock equivalents (in shares)	1.3	1.5	1.2	1.6
Weighted average outstanding shares - diluted (in shares)	94.0	95.2	94.5	95.1
Basic earnings per common share
Continuing operations (in dollars per share)	$ 0.78	$ 0.65	$ 2.54	$ 2.11
Discontinued operations (in dollars per share)	0.04	0.46	0.15	0.56
Net earnings (in dollars per share)	0.82	1.11	2.69	2.67
Diluted earnings per common share
Continuing operations (in dollars per share)	0.77	0.64	2.50	2.07
Discontinued operations (in dollars per share)	0.04	0.46	0.15	0.56
Net earnings (in dollars per share)	$ 0.81	$ 1.10	$ 2.65	$ 2.63
Outstanding options (in shares)	2.3	3.1	2.3	3.1
Exercisable outstanding options (in shares)	2.2	2.7	2.2	2.7
Anti-dilutive securities (in shares)	0.0	0.3	0.0	0.3