Subsequent Events (Details) - USD ($)				6 Months Ended	12 Months Ended
		Apr. 06, 2017	Mar. 27, 2017	Dec. 31, 2015	Dec. 31, 2016	Jun. 27, 2015	Jun. 28, 2014	Nov. 08, 2013
Subsequent Event [Line Items]
Proceeds from sale of business				$ 0	$ 69,100,000	$ 0	$ 0
Senior notes				4,698,300,000	5,373,100,000	4,720,900,000		$ 2,300,000,000
2.30% Unsecured Senior notes November 8, 2018
Subsequent Event [Line Items]
Senior notes	[1]			$ 600,000,000	$ 600,000,000	$ 600,000,000
Interest rate, stated percentage					2.30%
Maturity date					Nov. 08, 2018
Royalty Pharma | Subsequent Event
Subsequent Event [Line Items]
Subsequent event date			Mar. 27, 2017
Sale price of divestiture - cash plus non-cash			$ 2,850,000,000
Proceeds from sale of business			2,200,000,000
Proceeds from sale of business, maximum milestone payments in year two			250,000,000
Proceeds from sale of business, maximum milestone payments in year four			$ 400,000,000
Strides Shasun Limited | Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of business		$ 22,200,000

[1] (2)Discussed below collectively as the "2013 Notes."