Recent Accounting Pronouncements Recent Accounting Pronouncements (Impact of Adoption - ASU 2014-09) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales	$ 2,329.8	$ 2,962.5	$ 7,163.8	$ 9,515.6
Income tax provision (benefit)	73.2	(111.6)	276.9	544.8
Net earnings (loss) attributable to Viatris Inc. common shareholders	354.3	311.5	1,067.4	(1,005.3)
Revenues	4,078.2	$ 4,536.6	12,386.7	$ 13,544.7
Prepaid expenses and other current assets	1,700.4		1,700.4			$ 1,957.6
Income taxes payable	106.7		106.7			236.9
Retained earnings	4,312.5		4,312.5			3,688.8
Accumulated other comprehensive loss	(3,759.1)		(3,759.1)		$ (2,899.2)	$ (1,744.3)
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss) attributable to Viatris Inc. common shareholders	$ 354.3		$ 1,067.4