Accrued Expenses - Components of Accrued Expenses (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Salaries and benefits	$ 1,043		$ 1,251
Product warranties	189	$ 188	207	$ 254	$ 273	$ 286
Dividends payable (see Note 11)	233		237
Partner rebates	198		235
Restructuring, current (See Note 12)	156		123
Derivatives	48		75
Other	956		1,013
Accrued Liabilities, Current, Total	$ 2,823		$ 3,141