Three Months Ended
September 30,

Nine Months Ended
September 30,

2012

2011

2012

2011

Basic earnings per share:

Income from continuing operations attributable to common shareholders

$

2.23

$

2.25

$

3.29

$

2.90

Income (loss) from discontinued operations

—

0.09

(0.01

)

0.10

Earnings per share — basic

$

2.23

$

2.34

$

3.28

$

3.00

Diluted earnings per share:

Income from continuing operations attributable to common shareholders

$

2.21

$

2.24

$

3.26

$

2.88

Income (loss) from discontinued operations

—

0.08

(0.01

)

0.10

Earnings per share — diluted

$

2.21

$

2.32

$

3.25

$

2.98