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	176.2			174.7			1.5
Other comprehensive income	74.7				74.8		(0.1)
Cash dividends declared	(48.7)			(48.7)
Adoption of new accounting standard				42.9	(42.9)
Stock compensation plans	61.8		61.7			$ 0.1
Stock compensation plans, shares		0.6				0.1
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)
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	246.2			246.1			0.1
Other comprehensive income	3.9				3.9
Cash dividends declared	(49.2)			(49.2)
Stock compensation plans	62.3		62.0			$ 0.3
Stock compensation plans, shares		0.8
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)