Inventories (Detail) - USD ($) $ in Millions		Jun. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Finished goods		$ 2,494	$ 2,262
Work-in-process		5,249	4,701
Raw materials and supplies		490	546
Inventories	[1],[2]	8,233	7,508
Noncurrent inventories not included above	[3]	$ 646	$ 618

[1] The change from December 31, 2018 reflects increases for certain products to meet targeted levels in the normal course of business, including inventory build for supply recovery and market demand, partially offset by a decrease due to foreign exchange.

[2] Amounts may not add due to rounding.

[3] Included in Other noncurrent assets. There are no recoverability issues associated with these amounts.