Other (Income) Expense, Net (Detail) - USD ($) $ in Millions			12 Months Ended
	May 26, 2016	May 06, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other (Income) Expense, net
Foreign exchange			$ (28)	$ (113)	$ (8)
Net loss on debt extinguishment			153	130
Net realized gains on Retained Shares transaction	$ (537)	$ (611)	(4,387)
Gain on litigation settlement				(52)
Gain on sale of investments and other assets			(3)	(38)	(20)
All other			(31)	(32)	49
Other (income) expense, net			$ (4,296)	$ (105)	$ 21