Restructuring (Narrative) (Details) $ in Thousands						3 Months Ended				6 Months Ended
	Jul. 21, 2017 USD ($) open_position	Jul. 21, 2017 USD ($) position	Jul. 21, 2017 USD ($)	Jan. 26, 2017 position	Oct. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 position	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets										$ 586,232
U.S. Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets						$ 268,200	$ 72,700
Excess Inventory Reserve Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						7,900
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						16,000			$ 7,100	17,500	$ 11,800
2016 US Generic Pharmaceuticals Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred									18,900	1,100	146,200
Restructuring expenses										1,117
2016 US Generic Pharmaceuticals Restructuring | Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets											100,300
2016 US Generic Pharmaceuticals Restructuring | Excess Inventory Reserve Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses									6,400		33,300
2016 US Generic Pharmaceuticals Restructuring | Employee Separation, Retention, and Other Benefit Related Costs | U.S. Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring expenses									6,400		6,400
2016 US Generic Pharmaceuticals Restructuring | Accelerated Depreciation | U.S. Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring expenses									3,400		3,400
2016 US Generic Pharmaceuticals Restructuring | Other Restructuring Costs | U.S. Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring expenses									$ 2,700		$ 2,700
2016 US Generic Pharmaceuticals Restructuring | Charlotte, North Carolina Facility
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of property					$ 14,000
2016 US Branded Pharmaceutical Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions reduced | position								375
Expected restructuring costs remaining						0				0
January 2017 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expenses										15,060
Expected number of positions to be eliminated | position				90
Expected restructuring costs remaining						0				0
January 2017 Restructuring | Corporate unallocated costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses										4,900
January 2017 Restructuring | U.S. Generic Pharmaceuticals | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring expenses										3,300
January 2017 Restructuring | U.S. Branded Pharmaceuticals | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring expenses										6,900
2017 US Generic Pharmaceuticals Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring expenses										8,871
2017 US Generic Pharmaceuticals Restructuring | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected number of positions to be eliminated	35	875
Expected restructuring costs	$ 325,000	$ 325,000	$ 325,000
Estimated cash outlays			60,000
2017 US Generic Pharmaceuticals Restructuring | U.S. Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						109,300				109,300
2017 US Generic Pharmaceuticals Restructuring | Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						89,500				89,500
2017 US Generic Pharmaceuticals Restructuring | Asset Impairment Charges | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	90,000	90,000	90,000
2017 US Generic Pharmaceuticals Restructuring | Excess Inventory Reserve Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						7,900				7,900
2017 US Generic Pharmaceuticals Restructuring | Excess Inventory Reserve Write-Offs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	10,000	10,000	10,000
2017 US Generic Pharmaceuticals Restructuring | Employee Separation, Retention, and Other Benefit Related Costs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	40,000	40,000	40,000
2017 US Generic Pharmaceuticals Restructuring | Accelerated Depreciation | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	165,000	165,000	165,000
2017 US Generic Pharmaceuticals Restructuring | Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expenses						$ 11,900				$ 11,900
2017 US Generic Pharmaceuticals Restructuring | Other Restructuring Costs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs	$ 20,000	$ 20,000	$ 20,000