Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Shares [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2017	$ 11,735.5	$ 3.1	$ 8,514.9	$ 10,022.8	$ (83.2)	$ (6,721.8)	$ (0.3)
Balance, shares at Dec. 31, 2017		306.5				(103.9)
Net earnings	523.2			521.9			1.3
Other comprehensive loss	(42.0)				(42.0)
Cash dividends declared	(146.5)			(146.5)
Adoption of ASU 2018-02				42.9	(42.9)
Sale of shares in a subsidiary without loss of control	5.2						5.2
Stock compensation plans	147.6		147.4	0.1		$ 0.1
Stock compensation plans, shares		1.3				0.1
Balance at Sep. 30, 2018	12,223.0	$ 3.1	8,662.3	10,441.2	(168.1)	$ (6,721.7)	6.2
Balance, shares at Sep. 30, 2018		307.8				(103.8)
Balance at Jun. 30, 2018	12,044.2	$ 3.1	8,596.8	10,327.9	(163.0)	$ (6,721.7)	1.1
Balance, shares at Jun. 30, 2018		307.2				(103.8)
Net earnings	162.1			162.2			(0.1)
Other comprehensive loss	(5.1)				(5.1)
Cash dividends declared	(49.0)			(49.0)
Sale of shares in a subsidiary without loss of control	5.2						5.2
Stock compensation plans	65.6		65.5	0.1
Stock compensation plans, shares		0.6
Balance at Sep. 30, 2018	12,223.0	$ 3.1	8,662.3	10,441.2	(168.1)	$ (6,721.7)	6.2
Balance, shares at Sep. 30, 2018		307.8				(103.8)
Balance at Dec. 31, 2018	11,276.1	$ 3.1	8,686.1	9,491.2	(187.4)	$ (6,721.7)	4.8
Balance, shares at Dec. 31, 2018		307.9				(103.9)
Net earnings	810.1			810.9			(0.8)
Other comprehensive loss	(35.8)				(35.8)
Cash dividends declared	(147.7)			(147.7)
Stock compensation plans	182.8		181.1	0.9		$ 0.8
Stock compensation plans, shares		1.6
Balance at Sep. 30, 2019	12,085.5	$ 3.1	8,867.2	10,155.3	(223.2)	$ (6,720.9)	4.0
Balance, shares at Sep. 30, 2019		309.5				(103.9)
Balance at Jun. 30, 2019	11,662.2	$ 3.1	8,776.5	9,772.7	(171.8)	$ (6,721.4)	3.1
Balance, shares at Jun. 30, 2019		308.8				(103.9)
Net earnings	432.0			431.1			0.9
Other comprehensive loss	(51.4)				(51.4)
Cash dividends declared	(49.4)			(49.4)
Stock compensation plans	92.1		90.7	0.9		$ 0.5
Stock compensation plans, shares		0.7
Balance at Sep. 30, 2019	$ 12,085.5	$ 3.1	$ 8,867.2	$ 10,155.3	$ (223.2)	$ (6,720.9)	$ 4.0
Balance, shares at Sep. 30, 2019		309.5				(103.9)