Selected quarterly financial results (unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Selected quarterly financial results (unaudited)

Selected quarterly financial results

	2011 Quarter3
(Dollars in millions except per share data)	1st			2nd			3rd			4th
Sales and revenues	$	12,949		$	14,230		$	15,716		$	17,243
Less: Revenues	(672		)	(695		)	(693		)	(686		)
Sales	12,277			13,535			15,023			16,557
Cost of goods sold	9,057			10,303			11,455			12,763
Gross margin	3,220			3,232			3,568			3,794
Profit (loss) 1	$	1,225		$	1,015		$	1,141		$	1,547
Profit (loss) per common share	$	1.91		$	1.57		$	1.76		$	2.39
Profit (loss) per common share—diluted 2	$	1.84		$	1.52		$	1.71		$	2.32

	2010 Quarter3
	1st			2nd			3rd			4th
Sales and revenues	$	8,238		$	10,409		$	11,134		$	12,807
Less: Revenues	(687		)	(686		)	(682		)	(666		)
Sales	7,551			9,723			10,452			12,141
Cost of goods sold	5,894			7,372			7,752			9,349
Gross margin	1,657			2,351			2,700			2,792
Profit (loss) 1	$	233		$	707		$	792		$	968
Profit (loss) per common share	$	0.37		$	1.12		$	1.25		$	1.52
Profit (loss) per common share—diluted 2	$	0.36		$	1.09		$	1.22		$	1.47

1 Profit (loss) attributable to common stockholders.

2 Diluted by assumed exercise of stock-based compensation awards using the treasury stock method.

3 See Note 23 - Business Combinations and Note 25 - Divestitures and assets held for sale for additional information.