Condensed Consolidated Statements of Stockholders' Equity (unaudited) - 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]	Treasury Shares [Member]	Noncontrolling Interest [Member]
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)
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)	$ 3.1	8,984.3	9,866.2	$ (3.1)	(255.1)	$ (6,719.9)	4.1
Balance, shares at Mar. 31, 2020			310.6					(103.8)
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)
Net (loss) earnings	197.7				198.1				(0.4)
Other comprehensive income (loss)	21.1						21.1
Cash dividends declared	(50.0)				(50.0)
Stock compensation plans	81.6			77.6	2.7			$ 1.3
Stock compensation plans, shares			0.8
Balance at Mar. 31, 2021	$ 12,449.8		$ 3.1	$ 9,199.2	$ 10,237.7		$ (276.7)	$ (6,718.3)	$ 4.8
Balance, shares at Mar. 31, 2021			312.2					(103.8)