Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Significant Accounting Policies

Schedule of inventories, net

as of December 31 (in millions)	2014		2013
Finished goods	$	341	$	485
Work-in-process		629		404
Materials		154		261
Inventories, net	$	1,124	$	1,150

Schedule of property and equipment, net

as of December 31 (in millions)	2014			2013
Land	$	48		$	50
Buildings		1,228			1,263
Equipment		5,324			5,214
Construction in progress		505			382
Property and equipment, gross		7,105			6,909
Less accumulated depreciation		(4,620	)		(4,611	)
Property and equipment, net	$	2,485		$	2,298