Borrowings and Capital Lease Obligations (Narrative) (Details)		9 Months Ended
	Feb. 22, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 23, 2016 USD ($)	Jun. 03, 2016 USD ($)	Jan. 11, 2016 USD ($) contract	Dec. 31, 2015 USD ($)	Nov. 02, 2015 USD ($) contract	Sep. 28, 2015 USD ($)	Jan. 11, 2015 USD ($)	Dec. 12, 2014 USD ($)
Line of Credit Facility [Line Items]
Aggregate Amount		$ 5,000,000,000
Repayment of lines of credit		14,632,900,000	$ 2,486,100,000
Long-term borrowings		20,988,900,000					$ 69,900,000
Capital lease obligation		$ 348,600,000
January 2016 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement initiation date		Jan. 11, 2016
Facility agreement total amount						$ 18,000,000,000
Number of term loan facilities | contract						2
November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement initiation date		Nov. 02, 2015
Facility agreement total amount								$ 5,600,000,000
Number of term loan facilities | contract								3
January 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement total amount										$ 850,000,000
Reduction in borrowing capacity									$ 100,000,000
Repayment of lines of credit	$ 100,000,000
November 2015 Facility A | November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement expiration date		Nov. 02, 2016
Term loan facility								$ 1,000,000,000
November 2015 Facility A - Matures November 2, 2017 | November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Term loan facility								400,000,000
November 2015 Facility A - Matures November 2, 2016 | November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Term loan facility								600,000,000
November 2015 Facility B | November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement expiration date		Nov. 02, 2017
Term loan facility								2,200,000,000
November 2015 Facility C | November 2015 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement expiration date		Nov. 02, 2018
Term loan facility								$ 2,400,000,000
January 2016 Facility B | January 2016 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement expiration date		Jul. 11, 2016
Term loan facility						$ 5,000,000,000
January 2016 Facility A | January 2016 Facilities Agreement
Line of Credit Facility [Line Items]
Facility agreement expiration date		Jan. 11, 2017
Term loan facility						$ 13,000,000,000
Long-term borrowings					$ 12,390,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Aggregate Amount											$ 2,100,000,000.0
Facility agreement initiation date		Dec. 12, 2014
Facility amount outstanding		$ 920,000,000
Facility agreement expiration date		Dec. 12, 2020
Swingline Facility											$ 250,000,000
Senior Notes | SAIIDAC Notes
Line of Credit Facility [Line Items]
Aggregate Amount				$ 12,100,000,000.0
Shire Acquisitions Investment Ireland Designated Activity Company | Senior Notes
Line of Credit Facility [Line Items]
Aggregate Amount		$ 12,100,000,000
Deferred financing costs				$ 62,700,000