Earnings Per Share and Equity (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share and Equity Tables [Abstract]

Reconciliation of basic and diluted earnings per share

	Year Ended December 31,
	2012		2011		2010
Net income on common stock	$	1,160	$	2,495	$	2,563
Weighted average common shares outstanding — basic		816		663		661
Assumed exercise and/or distributions of stock-based awards		3		2		2
Weighted average common shares outstanding — diluted		819		665		663