Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accounts Payable and Accrued Liabilities, Current
Accounts payable, principally trade	$ 716	$ 677
Common stock dividends payable	137	363
Employee compensation and withholdings	481	485
Property, payroll and certain other taxes	166	184
Infusion pump reserves	52	145
Business optimization reserves	98	89
Accrued rebates	192	174
Separation-related reserves	190
All other	634	560
Accounts payable and accrued liabilities	$ 2,666	$ 2,677