Identifiable Intangible Assets and Goodwill - Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 27, 2015 USD ($)
Goodwill [Roll Forward]
Balance, December 31, 2014	$ 42,069	[1]
Balance, September 27, 2015	47,217	[1]
Operating Segments [Member]
Goodwill [Roll Forward]
Balance, December 31, 2014	42,069
Additions	5,829	[2]
Other	(681)	[3]
Balance, September 27, 2015	47,217
Global Innovative Pharmaceutical [Member]
Goodwill [Roll Forward]
Balance, December 31, 2014	13,032
Additions	0	[2]
Other	(205)	[3]
Balance, September 27, 2015	12,827
Global Vaccines, Oncology and Consumer Healthcare [Member]
Goodwill [Roll Forward]
Balance, December 31, 2014	11,398
Additions	39	[2]
Other	(197)	[3]
Balance, September 27, 2015	11,240
Global Established Pharmaceutical [Member]
Goodwill [Roll Forward]
Balance, December 31, 2014	17,639
Additions	5,790	[2]
Other	(279)	[3]
Balance, September 27, 2015	$ 23,150

[1] Amounts may not add due to rounding.

[2] GEP additions relate to our acquisition of Hospira and are subject to change until we complete the recording of the assets acquired and liabilities assumed from Hospira (see Note 2A).

[3] Primarily reflects the impact of foreign exchange.