Subsidiary Guarantors Condensed Consolidating Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Condensed Income Statements, Captions [Line Items]
Net sales	$ 2,460.6	$ 2,650.4
Revenues	2,495.5	2,684.5
Cost of sales	1,690.3	1,700.2
Gross profit	805.2	984.3
Research and development	172.6	204.9
Selling, general and administrative	607.9	607.5
Litigation settlements and other contingencies, net	0.7	16.2
Total operating expenses	781.2	828.6
Earnings from operations	24.0	155.7
Interest expense	131.2	131.7
Other expense (income), net	7.3	13.5
Earnings before income taxes	(114.5)	10.5
Income tax benefit	(89.5)	(76.6)
Earnings (losses) of equity interest subsidiaries	0.0	0.0
Net earnings	(25.0)	87.1
Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	34.9	34.1
Eliminations
Condensed Income Statements, Captions [Line Items]
Net sales	0.0	0.0
Revenues	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Research and development	0.0	0.0
Selling, general and administrative	0.0	0.0
Litigation settlements and other contingencies, net	0.0	0.0
Total operating expenses	0.0	0.0
Earnings from operations	0.0	0.0
Interest expense	0.0	0.0
Other expense (income), net	0.0	0.0
Earnings before income taxes	0.0	0.0
Income tax benefit	0.0	0.0
Earnings (losses) of equity interest subsidiaries	(104.7)	(60.8)
Net earnings	(104.7)	(60.8)
Eliminations | Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	0.0	0.0
Mylan N.V.
Condensed Income Statements, Captions [Line Items]
Net sales	0.0	0.0
Revenues	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Research and development	0.0	0.0
Selling, general and administrative	9.1	9.8
Litigation settlements and other contingencies, net	0.0	0.0
Total operating expenses	9.1	9.8
Earnings from operations	(9.1)	(9.8)
Interest expense	81.7	93.5
Other expense (income), net	(58.1)	(114.0)
Earnings before income taxes	(32.7)	10.7
Income tax benefit	(5.6)	(7.3)
Earnings (losses) of equity interest subsidiaries	2.1	69.1
Net earnings	(25.0)	87.1
Mylan N.V. | Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	0.0	0.0
Mylan Inc.
Condensed Income Statements, Captions [Line Items]
Net sales	0.0	0.0
Revenues	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Research and development	0.0	0.0
Selling, general and administrative	138.7	130.7
Litigation settlements and other contingencies, net	0.0	7.0
Total operating expenses	138.7	137.7
Earnings from operations	(138.7)	(137.7)
Interest expense	43.5	26.9
Other expense (income), net	(60.1)	(57.7)
Earnings before income taxes	(122.1)	(106.9)
Income tax benefit	1.8	(17.7)
Earnings (losses) of equity interest subsidiaries	102.6	(8.3)
Net earnings	(21.3)	(97.5)
Mylan Inc. | Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	0.0	0.0
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Net sales	0.0	0.0
Revenues	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Research and development	0.0	0.0
Selling, general and administrative	0.0	0.0
Litigation settlements and other contingencies, net	0.0	0.0
Total operating expenses	0.0	0.0
Earnings from operations	0.0	0.0
Interest expense	0.0	0.0
Other expense (income), net	0.0	0.0
Earnings before income taxes	0.0	0.0
Income tax benefit	0.0	0.0
Earnings (losses) of equity interest subsidiaries	0.0	0.0
Net earnings	0.0	0.0
Guarantor Subsidiaries | Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	0.0	0.0
Non-Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Net sales	2,460.6	2,650.4
Revenues	2,495.5	2,684.5
Cost of sales	1,690.3	1,700.2
Gross profit	805.2	984.3
Research and development	172.6	204.9
Selling, general and administrative	460.1	467.0
Litigation settlements and other contingencies, net	0.7	9.2
Total operating expenses	633.4	681.1
Earnings from operations	171.8	303.2
Interest expense	6.0	11.3
Other expense (income), net	125.5	185.2
Earnings before income taxes	40.3	106.7
Income tax benefit	(85.7)	(51.6)
Earnings (losses) of equity interest subsidiaries	0.0	0.0
Net earnings	126.0	158.3
Non-Guarantor Subsidiaries | Other Revenues
Condensed Income Statements, Captions [Line Items]
Revenues	$ 34.9	$ 34.1