Subsidiary Guarantors Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 229.8	$ 388.1
Accounts receivable, net	2,778.5	2,881.0
Inventories	2,708.8	2,580.2
Intercompany receivables	0.0	0.0
Prepaid expenses and other current assets	545.2	518.4
Total current assets	6,262.3	6,367.7
Property, plant and equipment, net	2,151.4	2,170.2
Investments in subsidiaries	0.0	0.0
Intercompany notes and interest receivable	0.0	0.0
Intangible assets, net	12,955.5	13,664.6
Goodwill	9,607.9	9,747.8
Other assets	929.5	784.6
Total assets	31,906.6	32,734.9
Current liabilities:
Accounts payable	1,316.5	1,617.0
Short-term borrowings	0.4	1.9
Income taxes payable	23.2	121.5
Current portion of long-term debt and other long-term obligations	703.5	699.8
Intercompany payables	0.0	0.0
Other current liabilities	2,114.0	2,147.6
Total current liabilities	4,157.6	4,587.8
Long-term debt	13,086.9	13,161.2
Intercompany notes payable	0.0	0.0
Other long-term obligations	2,770.5	2,818.8
Total liabilities	20,015.0	20,567.8
Equity [Abstract]
Total equity	11,891.6	12,167.1	$ 13,170.1	$ 13,307.6
Total liabilities and equity	31,906.6	32,734.9
Eliminations
Current assets:
Cash and cash equivalents	0.0	0.0
Accounts receivable, net	0.0	0.0
Inventories	0.0	0.0
Intercompany receivables	(13,535.4)	(13,968.7)
Prepaid expenses and other current assets	0.0	0.0
Total current assets	(13,535.4)	(13,968.7)
Property, plant and equipment, net	0.0	0.0
Investments in subsidiaries	(31,901.2)	(32,125.4)
Intercompany notes and interest receivable	(20,110.5)	(19,539.8)
Intangible assets, net	0.0	0.0
Goodwill	0.0	0.0
Other assets	0.0	0.0
Total assets	(65,547.1)	(65,633.9)
Current liabilities:
Accounts payable	0.0	0.0
Short-term borrowings	0.0	0.0
Income taxes payable	0.0	0.0
Current portion of long-term debt and other long-term obligations	0.0	0.0
Intercompany payables	(13,535.4)	(13,968.7)
Other current liabilities	0.0	0.0
Total current liabilities	(13,535.4)	(13,968.7)
Long-term debt	0.0	0.0
Intercompany notes payable	(20,110.5)	(19,539.8)
Other long-term obligations	0.0	0.0
Total liabilities	(33,645.9)	(33,508.5)
Equity [Abstract]
Total equity	(31,901.2)	(32,125.4)
Total liabilities and equity	(65,547.1)	(65,633.9)
Mylan N.V.
Current assets:
Cash and cash equivalents	0.0	0.0
Accounts receivable, net	0.0	0.0
Inventories	0.0	0.0
Intercompany receivables	324.4	342.9
Prepaid expenses and other current assets	5.8	5.6
Total current assets	330.2	348.5
Property, plant and equipment, net	0.0	0.0
Investments in subsidiaries	18,692.3	18,995.9
Intercompany notes and interest receivable	6,224.4	6,287.4
Intangible assets, net	0.0	0.0
Goodwill	0.0	0.0
Other assets	0.2	0.3
Total assets	25,247.1	25,632.1
Current liabilities:
Accounts payable	0.0	0.0
Short-term borrowings	0.0	0.0
Income taxes payable	0.0	0.0
Current portion of long-term debt and other long-term obligations	649.4	649.0
Intercompany payables	1,545.7	1,618.8
Other current liabilities	95.0	21.0
Total current liabilities	2,290.1	2,288.8
Long-term debt	9,299.5	9,370.1
Intercompany notes payable	1,765.9	1,806.1
Other long-term obligations	0.0	0.0
Total liabilities	13,355.5	13,465.0
Equity [Abstract]
Total equity	11,891.6	12,167.1
Total liabilities and equity	25,247.1	25,632.1
Mylan Inc.
Current assets:
Cash and cash equivalents	0.0	18.2
Accounts receivable, net	13.1	24.3
Inventories	0.0	0.0
Intercompany receivables	516.4	518.7
Prepaid expenses and other current assets	107.5	71.3
Total current assets	637.0	632.5
Property, plant and equipment, net	252.5	259.7
Investments in subsidiaries	13,208.9	13,129.5
Intercompany notes and interest receivable	10,847.6	10,732.6
Intangible assets, net	0.0	0.0
Goodwill	17.1	17.1
Other assets	93.3	68.9
Total assets	25,056.4	24,840.3
Current liabilities:
Accounts payable	42.6	70.6
Short-term borrowings	0.0	0.0
Income taxes payable	0.0	0.0
Current portion of long-term debt and other long-term obligations	0.2	0.2
Intercompany payables	11,988.3	12,326.4
Other current liabilities	215.8	216.0
Total current liabilities	12,246.9	12,613.2
Long-term debt	3,782.5	3,786.2
Intercompany notes payable	3,687.9	3,094.2
Other long-term obligations	75.9	48.6
Total liabilities	19,793.2	19,542.2
Equity [Abstract]
Total equity	5,263.2	5,298.1
Total liabilities and equity	25,056.4	24,840.3
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	0.0	0.0
Accounts receivable, net	0.0	0.0
Inventories	0.0	0.0
Intercompany receivables	0.0	0.0
Prepaid expenses and other current assets	0.0	0.0
Total current assets	0.0	0.0
Property, plant and equipment, net	0.0	0.0
Investments in subsidiaries	0.0	0.0
Intercompany notes and interest receivable	0.0	0.0
Intangible assets, net	0.0	0.0
Goodwill	0.0	0.0
Other assets	0.0	0.0
Total assets	0.0	0.0
Current liabilities:
Accounts payable	0.0	0.0
Short-term borrowings	0.0	0.0
Income taxes payable	0.0	0.0
Current portion of long-term debt and other long-term obligations	0.0	0.0
Intercompany payables	0.0	0.0
Other current liabilities	0.0	0.0
Total current liabilities	0.0	0.0
Long-term debt	0.0	0.0
Intercompany notes payable	0.0	0.0
Other long-term obligations	0.0	0.0
Total liabilities	0.0	0.0
Equity [Abstract]
Total equity	0.0	0.0
Total liabilities and equity	0.0	0.0
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	229.8	369.9
Accounts receivable, net	2,765.4	2,856.7
Inventories	2,708.8	2,580.2
Intercompany receivables	12,694.6	13,107.1
Prepaid expenses and other current assets	431.9	441.5
Total current assets	18,830.5	19,355.4
Property, plant and equipment, net	1,898.9	1,910.5
Investments in subsidiaries	0.0	0.0
Intercompany notes and interest receivable	3,038.5	2,519.8
Intangible assets, net	12,955.5	13,664.6
Goodwill	9,590.8	9,730.7
Other assets	836.0	715.4
Total assets	47,150.2	47,896.4
Current liabilities:
Accounts payable	1,273.9	1,546.4
Short-term borrowings	0.4	1.9
Income taxes payable	23.2	121.5
Current portion of long-term debt and other long-term obligations	53.9	50.6
Intercompany payables	1.4	23.5
Other current liabilities	1,803.2	1,910.6
Total current liabilities	3,156.0	3,654.5
Long-term debt	4.9	4.9
Intercompany notes payable	14,656.7	14,639.5
Other long-term obligations	2,694.6	2,770.2
Total liabilities	20,512.2	21,069.1
Equity [Abstract]
Total equity	26,638.0	26,827.3
Total liabilities and equity	$ 47,150.2	$ 47,896.4