Fair Value Measurements - Fair Value Measurements (Schedule of Financial Assets Measured At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Assets:
Total expense for the year	$ (142,217)	$ (94,924)	$ (613,400)	$ (1,023,930)
2017 US Generic Pharmaceuticals Restructuring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restructuring expenses			19,120
2017 US Generic Pharmaceuticals Restructuring | Asset impairment charges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restructuring expenses			2,600
Fair value, measurements, nonrecurring
Assets:
Total expense for the year			(222,400)
Fair value, measurements, nonrecurring | Intangible assets
Assets:
Total expense for the year			(217,576)
Fair value, measurements, nonrecurring | Certain property, plant and equipment
Assets:
Total expense for the year			(4,824)
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair value, measurements, nonrecurring
Assets:
Intangible assets, excluding goodwill	0		0
Certain property, plant and equipment	0		0
Total	0		0
Significant Other Observable Inputs (Level 2) | Fair value, measurements, nonrecurring
Assets:
Intangible assets, excluding goodwill	0		0
Certain property, plant and equipment	0		0
Total	0		0
Significant Unobservable Inputs (Level 3) | Fair value, measurements, nonrecurring
Assets:
Intangible assets, excluding goodwill	239,857		239,857
Certain property, plant and equipment	0		0
Total	$ 239,857		$ 239,857