Supplemental Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Expense, net
Interest expense	$ 719	$ 429	$ 299
Interest and dividend income	(33)	(38)	(21)
Interest expense, net	686	391	$ 278
Prepaid Expenses and Other
Prepaid Expense and Other Assets, Total	1,458	1,952
Accounts Payable and Accrued Liabilities
Sales rebates	2,355	1,384
Accounts payable	1,597	1,401
Dividends payable	924	791
Salaries, wages and commissions	632	623
Royalty and license arrangements	411	821
Other	2,544	1,934
Accounts payable and accrued liabilities	8,463	6,954
Long-Term Liabilities
Pension and other post-employment benefits	1,949	2,220
Liabilities for unrecognized tax benefits	902	471
Other	844	990
Long-term liabilities	3,695	3,681
Other Income Expense
Other (Income) Expense
Income from resolution of contractual agreement		34
Shire plc
Interest Expense, net
Interest expense, net		$ 141
Pharmacyclics Inc
Interest Expense, net
Interest expense, net	$ 86