Exhibit 12

COMPUTATION OF RATION OF EARNINGS TO FIXED CHARGES

	Nine months ended		Year Ended December 31
	September 30, 2011		2010		2009		2008		2007		2006
Earnings:
Earnings before income taxes and net earnings in equity affiliates	$	1,259	$	1,247	$	620	$	904	$	1,282	$	1,018
Plus:
Fixed charges exclusive of capitalized interest		222		266		273		343		156		137
Amortization of capitalized interest		5		7		7		7		7		8
Adjustments for equity affiliates		7		6		11		18		21		16
Total	$	1,493	$	1,525	$	911	$	1,271	$	1,466	$	1,179
Fixed Charges:
Interest expense incl amortization of debt discount/premium and debt expense	$	159	$	189	$	193	$	254	$	93	$	83
Rentals—portion representative of interest		63		77		80		89		63		54
Fixed charges exclusive of capitalized interest		222		266		273		343		156		137
Capitalized interest		7		7		9		8		11		7
Total	$	229	$	273	$	282	$	351	$	167	$	144
Ratio of earnings to fixed charges		6.5		5.6		3.2		3.6		8.8		8.2