Quarterly Data - Unaudited (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 31, 2018	Sep. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Data [Abstract]
Sales	$ 2,002.4	$ 1,860.0	$ 1,864.7	$ 1,592.9	$ 1,757.5	$ 1,601.2	$ 1,601.8	$ 1,492.2	$ 7,320.0	$ 6,452.7	$ 5,756.1
Gross profit	1,035.9	927.7	904.0	812.7	898.3	825.9	830.8	766.3	3,680.3	3,321.3	2,921.4
Operating profit	295.2	242.1	249.5	217.3	294.5	281.6	324.4	277.9	1,004.1	1,178.4	1,143.0
Earnings from continuing operations, net of income taxes	178.8	207.3	175.3	164.0	240.1	214.0	250.2	214.0	725.4	918.3	884.3
Earnings (loss) from discontinued operations, net of income taxes	14.0	(0.2)	(0.7)	0.4	1,872.2	31.3	44.8	47.2	13.5	1,995.5	160.2
Net earnings	$ 192.8	$ 207.1	$ 174.6	$ 164.4	$ 2,112.3	$ 245.3	$ 295.0	$ 261.2	$ 738.9	$ 2,913.8	$ 1,044.5
Net earnings per common share:
Net earnings per share from continuing operations, Basic (in dollars per share)	$ 0.48	$ 0.57	$ 0.47	$ 0.44	$ 0.67	$ 0.56	$ 0.72	$ 0.61	$ 1.95	$ 2.56	$ 2.54
Net earnings per share from discontinued operations, Basic (in dollars per share)	0.04	0	0	0	5.60	0.09	0.13	0.14	0.04	5.78	0.46
Net earnings per share, Basic (in dollars per share)	0.52	0.56	0.47	0.44	6.26	0.65	0.84	0.75	1.99	8.33	3.01
Net earnings per share from continuing operations, Diluted (in dollars per share)	0.48	0.56	0.47	0.43	0.66	0.55	0.70	0.61	1.93	2.52	2.51
Net earnings per share from discontinued operations, Diluted (in dollars per share)	0.04	0	0	0	5.52	0.09	0.13	0.13	0.04	5.69	0.45
Net earnings per share, Diluted (in dollars per share)	$ 0.52	$ 0.56	$ 0.46	$ 0.43	$ 6.17	$ 0.64	$ 0.83	$ 0.74	$ 1.97	$ 8.21	$ 2.96