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, 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	246.2			246.1			0.1
Other comprehensive income (loss)	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)
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	(509.1)			(508.5)			(0.6)
Other comprehensive income (loss)	(13.2)				(13.2)
Cash dividends declared	(49.6)			(49.6)
Adoption of new accounting standard	(3.1)			(3.1)
Stock compensation plans	64.9		64.2	0.1		$ 0.6
Stock compensation plans, shares		0.7				0.1
Balance at Mar. 31, 2020	$ 11,882.7	$ 3.1	$ 8,984.3	$ 9,866.2	$ (255.1)	$ (6,719.9)	$ 4.1
Balance, shares at Mar. 31, 2020		310.6				(103.8)