Intangible Assets and Goodwill Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets [Table Text Block]

The following table summarizes the carrying amount of our intangible assets (in thousands):

	December 31,
	2013		2012
Indefinite-lived intangible assets	$	574,355	$	10,986,200
Finite-lived intangible assets	11,325,751		750,193
Total intangible assets	$	11,900,106	$	11,736,393

Schedule of Indefinite-Lived Intangible Assets [Table Text Block]

The following table summarizes our indefinite-lived intangible assets (in thousands):

	December 31,
	2013			2012
Indefinite-lived intangible asset - Sovaldi (sofosbuvir)	$	—		$	10,720,000
Indefinite-lived intangible asset - Momelotinib (formerly CYT387)	362,700			—
Indefinite-lived intangible assets - Other	266,200			266,200
	628,900			10,986,200
Foreign currency translation adjustment	(54,545		)	—
Total	$	574,355		$	10,986,200

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following table summarizes our finite-lived intangible assets (in thousands):

	December 31, 2013				December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Intangible asset - Sofosbuvir	$	10,720,000	$	58,261	$	—	$	—
Intangible asset - Ranexa	688,400		190,849		688,400		133,119
Intangible asset - Lexiscan	262,800		121,210		262,800		95,466
Other	42,995		18,124		42,995		15,417
Total	$	11,714,195	$	388,444	$	994,195	$	244,002

Estimated Future Amortization Expense [Table Text Block]

s of December 31, 2013, the estimated future amortization expense associated with our intangible assets for each of the five succeeding fiscal years is as follows (in thousands):

Fiscal Year	Amount
2014	$	798,044
2015	803,496
2016	811,428
2017	815,872
2018	827,980
Total	$	4,056,820

Schedule of Goodwill [Table Text Block]

The following table summarizes the changes in the carrying amount of goodwill (in thousands):

Balance at December 31, 2012	$	1,060,919
Goodwill resulting from the acquisition of YM	127,238
Foreign currency translation adjustment	(19,134		)
Balance at December 31, 2013	$	1,169,023