Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Shares [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	361.1			359.7			1.4
Other comprehensive income	(36.9)				(36.9)
Cash dividends declared	(97.5)			(97.5)
Adoption of ASU 2018-02				42.9	(42.9)
Stock compensation plans	82.0		81.9			$ 0.1
Stock compensation plans, shares		0.7
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)
Balance at Mar. 31, 2018	11,999.5	$ 3.1	8,576.6	10,191.7	(51.3)	$ (6,721.7)	1.1
Balance, shares at Mar. 31, 2018		307.1				(103.8)
Net earnings	184.9			185.0			(0.1)
Other comprehensive income	(111.6)				(111.7)		0.1
Cash dividends declared	(48.8)			(48.8)
Stock compensation plans	20.2		20.2
Stock compensation plans, shares		0.1
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)
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	378.1			379.8			(1.7)
Other comprehensive income	15.6				15.6
Cash dividends declared	(98.3)			(98.3)
Stock compensation plans	90.7		90.4			$ 0.3
Stock compensation plans, shares		0.9
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)
Balance at Mar. 31, 2019	11,539.3	$ 3.1	8,748.1	9,688.1	(183.5)	$ (6,721.4)	4.9
Balance, shares at Mar. 31, 2019		308.7				(103.9)
Net earnings	131.9			133.7			(1.8)
Other comprehensive income	11.7				11.7
Cash dividends declared	(49.1)			(49.1)
Stock compensation plans	28.4		28.4
Stock compensation plans, shares		0.1
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)