Summary of Significant Accounting Policies (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Summary of Significant Accounting Policies

Schedule of inventories, net

(in millions)	March 31, 2013	December 31, 2012
Finished goods	$613	$547
Work-in-process	262	286
Raw materials	162	258
Inventories, net	$1,037	$1,091

as of December 31 (in millions)	2012		2011
Finished goods	$	547	$	429
Work-in-process		286		207
Materials		258		236
Inventories, net	$	1,091	$	872

Schedule of property and equipment

(in millions)	March 31, 2013		December 31, 2012
Property and equipment, gross	6,545		6,542
Less accumulated depreciation	(4,345	)	(4,295	)
Property and equipment, net	$2,200		$2,247

as of December 31 (in millions)	2012			2011
Land	$	94		$	106
Buildings		1,278			1,305
Equipment		4,865			4,331
Construction in progress		305			206
Property and equipment, gross		6,542			5,948
Less accumulated depreciation		(4,295	)		(3,804	)
Property and equipment, net	$	2,247		$	2,144

Schedule of basic and diluted earnings per share

years ended December 31 (in millions, except per share amounts)	2012		2011		2010
Net earnings	$	5,275	$	3,433	$	4,178
Basic and diluted earnings per common share		3.35		2.18		2.65
Basic and diluted average shares outstanding		1,577		1,577		1,577