Shareholders' Equity (Narrative) (Details) - USD ($)				1 Months Ended	12 Months Ended
	Sep. 25, 2015	Jun. 10, 2015	Jan. 29, 2015	Nov. 30, 2015	Dec. 31, 2015	Dec. 31, 2016	Apr. 30, 2015	Feb. 11, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Euro deferred shares, shares issued					4,000,000	4,000,000		4,000,000
Euro deferred shares, par value (in dollars per share)					$ 0.01	$ 0.01		$ 0.01
Share price (in dollars per share)		$ 83.25
Share repurchases					$ 251,088,000
2015 Share Buyback Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchase program, authorized amount							$ 2,500,000,000.0
Share repurchases				$ 250,000,000
Share repurchases (in shares)				4,400,000
Over-Allotment Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares issued (in shares)		3,603,603
Ordinary Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchases (in shares)					4,361,957
Auxilium Pharmaceuticals, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate consideration transferred			$ 2,600,000,000
Fair value of shares issued as part of acquisition			$ 1,520,000,000
Ordinary shares issued, value					$ 1,519,320,000
Auxilium Pharmaceuticals, Inc. | Ordinary Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares issued (in shares)			18,609,835		18,609,835
Ordinary shares issued, value					$ 2,000
Par Pharmaceutical Holdings, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate consideration transferred	$ 8,140,000,000
Ordinary shares issued (in shares)	18,069,899	27,627,628
Ordinary shares issued, value					$ 1,325,248,000
Equity consideration	$ 1,330,000,000
Par Pharmaceutical Holdings, Inc. | Ordinary Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares issued (in shares)					18,069,899
Ordinary shares issued, value					$ 2,000
Par Pharmaceutical Holdings, Inc. | Endo International
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares issued, value		$ 2,300,000,000