Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Data [Abstract]
Sales	$ 1,806.7	$ 1,685.3	$ 1,628.8	$ 1,535.2	$ 1,627.1	$ 1,567.4	$ 1,555.1	$ 1,474.7	$ 6,656.0	$ 6,224.3	$ 6,178.8
Gross profit	910.0	839.4	805.1	744.0	796.6	772.9	768.1	695.2	3,298.5	3,032.8	3,000.0
Operating profit	355.8	355.9	348.3	294.9	337.7	323.2	322.1	263.0	1,354.9	1,246.0	1,269.7
Net earnings	$ 336.9	$ 267.8	$ 240.1	$ 199.7	$ 224.5	$ 226.9	$ 238.9	$ 182.0	$ 1,044.5	$ 872.3	$ 863.8
Net earnings per share:
Basic EPS (in dollars per share)	$ 0.97	$ 0.77	$ 0.69	$ 0.58	$ 0.65	$ 0.66	$ 0.69	$ 0.53	$ 3.01	$ 2.52	$ 2.50
Diluted EPS (in dollars per share)	$ 0.95	$ 0.76	$ 0.68	$ 0.57	$ 0.64	$ 0.65	$ 0.69	$ 0.53	$ 2.96	$ 2.51	$ 2.50