Acquisitions and Other Transactions (Meda) (Narrative) (Details) SEK / shares in Units, € in Millions, shares in Millions, $ in Millions, SEK in Billions				2 Months Ended	3 Months Ended			9 Months Ended
		Aug. 05, 2016 EUR (€) shares	Aug. 05, 2016 USD ($) shares	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Nov. 01, 2016 SEK / shares	Aug. 05, 2016 SEK / shares	Aug. 05, 2016 USD ($)	Jul. 29, 2016 shares	Feb. 10, 2016 SEK	Feb. 10, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Ordinary shares issued for acquisition								$ 1,281.7	$ 6,305.8
Compulsory acquisition proceeding liability				$ 431.0	$ 431.0			431.0				$ 431.0				$ 0.0
Amount of loss recognized unrealized mark-to-market losses included in other expense					(36.8)		$ 22.2	(98.3)	29.8
Goodwill	[1]							3,984.9
Other Payments to Acquire Businesses			$ 308.0					308.0	0.0
Total revenues					3,057.1		2,695.2	7,809.1	6,938.6
Net (loss) earnings					(119.8)		$ 428.6	62.5	$ 653.1
Bridge Loan
Business Acquisition [Line Items]
Debt related commitment fees and debt issuance costs						$ 30.2		45.2
Swedish krona denominated contracts | Other expense
Business Acquisition [Line Items]
Amount of loss recognized unrealized mark-to-market losses included in other expense					44.4			128.6
Meda
Business Acquisition [Line Items]
Acquisition purchase price												6,921.1		SEK 83.6	$ 9,900.0
Foreign currency exchange rate, translation														8.4158	8.4158
Business acquisition, number of shares tendered | shares													343.0
Voting interests acquired, percentage													94.00%
Share price | SEK / shares											SEK 161
Cash consideration			$ 5,300.0
Equity consideration transferred | shares		26.4	26.4
Acquisition related costs					$ 65.8			212.5
Business combination, fair value inventory step-up												107.0
Amortization of fair value inventory step-up								$ 42.8
Goodwill			$ 3,677.6
Amount of goodwill expected to be tax deductible												0.0
Other Payments to Acquire Businesses | €		€ 275
Total revenues				331.1
Net (loss) earnings				$ (260.6)
Meda | Subsequent Event
Business Acquisition [Line Items]
Share price | SEK / shares										SEK 161.31
Meda | Product rights and licenses
Business Acquisition [Line Items]
Identified intangible assets												$ 8,060.7
Acquired intangible assets, weighted average useful life, in years		20 years	20 years
Meda | Eighty percent of number of shares tendered
Business Acquisition [Line Items]
Voting interests acquired, percentage												80.00%
Meda | Eighty percent of number of shares tendered | Maximum
Business Acquisition [Line Items]
Share price | SEK / shares											SEK 165
Meda | Twenty percent of number of shares tendered
Business Acquisition [Line Items]
Voting interests acquired, percentage												20.00%
Number of Mylan N.V. shares issued per Meda shares												0.386

[1] Includes goodwill related to the acquisition of Meda and the Topicals Business totaling $3.68 billion and $307.3 million, respectively.