Condensed Consolidated Statement of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Sales	$ 1,600	$ 1,613	$ 4,701	$ 4,919
Costs, Expenses and Other
Cost of sales	609	535	1,783	1,533
Selling, general and administrative	388	321	1,186	922
Research and development	111	54	254	150
Restructuring costs	1	12	3	43
Other (income) expense, net	102	10	182	44
Costs, Expenses And Other	1,211	932	3,408	2,692
Income From Continuing Operations Before Income Taxes	389	681	1,293	2,227
Taxes on Income	66	121	144	347
Net Income From Continuing Operations	323	560	1,149	1,880
Loss From Discontinued Operations - Net of Tax	0	(13)	0	(88)
Net Income	$ 323	$ 547	$ 1,149	$ 1,792
Earnings (Loss) per Share Attributable to Organon & Co. Stockholders - Basic:
Continuing operations (in dollars per share)	$ 1.27	$ 2.21	$ 4.53	$ 7.42
Discontinued operations (in dollars per share)	0	(0.05)	0	(0.35)
Net Earnings per Share Attributable to Organon & Co. Stockholders - Basic (in dollars per share)	1.27	2.16	4.53	7.07
Earnings (Loss) per Share Attributable to Organon & Co. Stockholders - Diluted:
Continuing operations (in dollars per share)	1.27	2.21	4.52	7.42
Discontinued operations (in dollars per share)	0	(0.05)	0	(0.35)
Net Earnings per Share Attributable to Organon & Co. Stockholders - Diluted (in dollars per share)	$ 1.27	$ 2.16	$ 4.52	$ 7.07
Weighted Average Shares Outstanding:
Basic (in shares)	253,534,000	253,516,000	253,530,000	253,516,000
Diluted (in shares)	254,172,000	253,516,000	254,011,000	253,516,000