Three Months Ended

Six Months Ended

March 31,

2012

2011

2012

2011

Numerator:

Income from continuing operations

$

129,763

$

98,961

$

274,060

$

203,326

Loss from discontinued operations

(44

)

(171

)

(55

)

(386

)

Net income

129,719

98,790

274,005

202,940

Adjustment for basic earnings per share:

Earnings allocated to unvested shareholders

(530

)

(300

)

(1,009

)

(599

)

Numerator for basic earnings per share:

From continuing operations

129,233

98,661

273,051

202,727

From discontinued operations

(44

)

(171

)

(55

)

(386

)

129,189

98,490

272,996

202,341

Adjustment for diluted earnings per share:

Effect of reallocating undistributed earnings of unvested shareholders

7

6

14

11

Numerator for diluted earnings per share:

From continuing operations

129,240

98,667

273,065

202,738

From discontinued operations

(44

)

(171

)

(55

)

(386

)

$

129,196

$

98,496

$

273,010

$

202,352

Denominator:

Denominator for basic earnings per share - weighted-average shares

107,385

106,515

107,285

106,270

Effect of dilutive shares from stock options and restricted stock

1,657

2,080

1,640

2,105

Denominator for diluted earnings per share - adjusted weighted-average shares

109,042

108,595

108,925

108,375

Basic earnings per common share:

Income from continuing operations

$

1.20

$

0.92

$

2.54

$

1.90

Loss from discontinued operations

—

Net income

$

1.20

$

0.92

$

2.54

$

1.90

Diluted earnings per common share:

Income from continuing operations

$

1.18

$

0.91

$

2.51

$

1.87

Loss from discontinued operations

—

Net income

$

1.18

$

0.91

$

2.51

$

1.87