Consolidated Condensed Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ in Millions		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Employee Benefit Trust	Accumulated Other Comprehensive Loss	Common Stock in Treasury	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2017			1,100,672					664
Beginning balance at Dec. 31, 2017			$ 687.9	$ 5,817.8	$ 13,894.1	$ (3,013.2)	$ (5,718.6)	$ (75.8)	$ 75.7
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income (loss)					957.5				4.6
Other comprehensive income (loss), net of tax							(284.9)
Cash dividends declared per share					(1,148.6)
Retirement of treasury shares (in shares)			(25,823)					(25,823)
Retirement of treasury shares			$ (16.1)		(2,034.5)			$ 2,050.7
Purchase of treasury shares (in shares)								25,823
Purchase of treasury shares								$ (2,050.7)
Issuance of stock under employee stock plans, net (in shares)			2,699					(60)
Issuance of stock under employee stock plans, net			$ 1.7	(130.3)				$ 6.4
Stock-based compensation				138.2
Other					(5.6)				(14.7)
Ending balance (in shares) at Jun. 30, 2018			1,077,548					604
Ending balance at Jun. 30, 2018			$ 673.5	5,825.7	14,247.3	(3,013.2)	(6,108.7)	$ (69.4)	65.6
Beginning balance (in shares) at Mar. 31, 2018			1,089,234					604
Beginning balance at Mar. 31, 2018			$ 680.8	5,758.0	16,608.2	(3,013.2)	(5,437.5)	$ (69.3)	60.8
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income (loss)					(259.9)				4.2
Other comprehensive income (loss), net of tax							(671.2)
Cash dividends declared per share					(1,148.6)
Retirement of treasury shares (in shares)			(11,735)					(11,735)
Retirement of treasury shares			$ (7.3)		(943.3)			$ 950.7
Purchase of treasury shares (in shares)								11,735
Purchase of treasury shares								$ (950.7)
Issuance of stock under employee stock plans, net (in shares)			49
Issuance of stock under employee stock plans, net				(2.5)				$ (0.1)
Stock-based compensation				70.2
Other					(9.1)				0.6
Ending balance (in shares) at Jun. 30, 2018			1,077,548					604
Ending balance at Jun. 30, 2018			$ 673.5	5,825.7	14,247.3	(3,013.2)	(6,108.7)	$ (69.4)	65.6
Beginning balance (in shares) at Dec. 31, 2018			1,057,639					604
Beginning balance at Dec. 31, 2018		$ 10,909.1	$ 661.0	6,583.6	11,395.9	(3,013.2)	(5,729.2)	$ (69.4)	1,080.4
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income (loss)					5,568.8				21.1
Other comprehensive income (loss), net of tax							128.7		11.0
Cash dividends declared per share					(1,178.1)
Retirement of treasury shares (in shares)			(94,627)					(94,627)
Retirement of treasury shares			$ (59.1)		(11,468.5)			$ 11,527.5
Purchase of treasury shares (in shares)	[1]							(29,626)
Purchase of treasury shares	[1]							$ (3,500.0)
Issuance of stock under employee stock plans, net (in shares)			2,945					(63)
Issuance of stock under employee stock plans, net			$ 1.8	(204.4)				$ 7.3
Stock-based compensation				155.3
Acquisition of common stock in exchange offer (in shares)								65,001
Acquisition of common stock in exchange offer								$ (8,027.5)
Deconsolidation of Elanco									(1,028.9)
Other									(6.8)
Ending balance (in shares) at Jun. 30, 2019			965,957					541
Ending balance at Jun. 30, 2019		2,857.3	$ 603.7	6,534.5	4,318.1	(3,013.2)	(5,600.5)	$ (62.1)	76.8
Beginning balance (in shares) at Mar. 31, 2019			971,363					541
Beginning balance at Mar. 31, 2019			$ 607.1	5,756.6	4,879.4	(3,013.2)	(5,687.5)	$ (62.1)	84.7
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Net income (loss)					1,327.2				(1.1)
Other comprehensive income (loss), net of tax							87.0
Cash dividends declared per share					(1,178.1)
Retirement of treasury shares (in shares)			(5,430)					(5,430)
Retirement of treasury shares			$ (3.4)		(696.6)			$ 700.0
Purchase of treasury shares (in shares)	[2]			700,000				5,430
Purchase of treasury shares	[2]							$ (700.0)
Issuance of stock under employee stock plans, net (in shares)			24
Issuance of stock under employee stock plans, net				$ (1.6)
Stock-based compensation				79.5
Other					(13.8)				(6.8)
Ending balance (in shares) at Jun. 30, 2019			965,957					541
Ending balance at Jun. 30, 2019		$ 2,857.3	$ 603.7	$ 6,534.5	$ 4,318.1	$ (3,013.2)	$ (5,600.5)	$ (62.1)	$ 76.8

[1] As of June 30, 2019, there was $2.40 billion remaining under our $8.00 billion share repurchase program authorized in June 2018.

[2] As of June 30, 2019, there was $2.40 billion remaining under our $8.00 billion share repurchase program authorized in June 2018.