Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Accumulated Other Comprehensive (Loss) Income [Member] Cumulative Effect, Period of Adoption, Adjustment [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 (loss) earnings	(379.3)				(379.2)					(0.1)
Other comprehensive loss	(61.3)						(61.3)
Cash dividends declared	(195.5)				(195.5)
Adoption of new accounting standard						$ 42.9		$ (42.9)
Sale of shares in a subsidiary without loss of control	5.2									5.2
Stock compensation plans	171.5			171.2	0.2				$ 0.1
Stock compensation plans, shares			1.4
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 (loss) earnings	1,131.5				1,131.6					(0.1)
Other comprehensive loss	(54.5)						(54.5)
Cash dividends declared	(197.2)				(197.2)
Stock compensation plans	236.9			234.0	1.7				$ 1.2
Stock compensation plans, shares			2.0
Balance at Dec. 31, 2019	12,392.8		$ 3.1	8,920.1	10,427.3		(241.9)		$ (6,720.5)	4.7
Balance, shares at Dec. 31, 2019			309.9						(103.9)
Net (loss) earnings	(137.4)				(138.9)					1.5
Other comprehensive loss	(55.9)						(55.9)
Cash dividends declared	(198.9)				(198.9)
Adoption of new accounting standard		$ (3.1)				$ (3.1)
Acquisition of noncontrolling interest	(1.0)									(1.0)
Stock compensation plans	202.9			201.5	0.5				$ 0.9
Stock compensation plans, shares			1.5						0.1
Balance at Dec. 31, 2020	$ 12,199.4		$ 3.1	$ 9,121.6	$ 10,086.9		$ (297.8)		$ (6,719.6)	$ 5.2
Balance, shares at Dec. 31, 2020			311.4						(103.8)