Earnings Per Share and Equity (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Reconciliation of basic and diluted earnings per share

The following table sets forth the components of basic and diluted earnings per share and shows the effect of the stock options, performance share awards and restricted stock on the weighted average number of shares outstanding used in calculating diluted earnings per share:

	Year Ended December 31,
	2014		2013		2012
Net income attributable to common shareholders	$	1,623	$	1,719	$	1,160
Weighted average common shares outstanding—basic	860		856		816
Assumed exercise and/or distributions of stock-based awards	4		4		3
Weighted average common shares outstanding—diluted	864		860		819