Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of Intangible Assets

The following table summarizes the Company's intangible assets:

(In millions)	Currently marketed products			IPR&D		Other intangible assets			Total
June 30, 2018
Gross acquired intangible assets	$	29,731.9		$	5,112.9	$	825.7		$	35,670.5
Accumulated amortization	(5,167.8		)	—		(392.2		)	(5,560.0		)
Intangible assets, net	$	24,564.1		$	5,112.9	$	433.5		$	30,110.5
December 31, 2017
Gross acquired intangible assets	$	31,973.5		$	5,113.9	$	835.9		$	37,923.3
Accumulated amortization	(4,549.2		)	—		(328.0		)	(4,877.2		)
Intangible assets, net	$	27,424.3		$	5,113.9	$	507.9		$	33,046.1

Intangible Assets Roll Forward

Activities in the net book value of intangible assets for the six months ended June 30, 2018 and 2017 are as follows: 

(In millions)	2018			2017
As of January 1,	$	33,046.1		$	34,697.5
Reclassification to assets held for sale	(1,598.5		)	—
Measurement period adjustments	—			(1,398.9		)
Amortization charged	(941.6		)	(798.1		)
Foreign currency translation	(256.7		)	953.8
Contribution to JV	(163.7		)	—
Impairment	(10.0		)	(20.0		)
Other	34.9			—
As of June 30,	$	30,110.5		$	33,434.3