Three months ended Sep. 30,

Nine months ended Sep. 30,

(millions, except per share amounts)

2011

2010

2011

2010

Basic earnings per share

Net income

$

90.3

$

51.1

$

219.6

$

182.8

Less: Income attributable to noncontrolling interest

(0.1

)

(0.1

)

(0.2

)

(0.5

)

Less: Amount allocated to nonvested participating shareholders

(0.5

)

(0.4

)

(1.2

)

(1.3

)

Net income attributable to TECO Energy available to common shareholders—basic

$

89.7

$

50.6

$

218.2

$

181.0

Average shares outstanding-common

213.8

212.8

213.5

212.5

Basic earnings per share attributable to TECO Energy available to common shareholders

$

0.42

$

0.24

$

1.02

$

0.85

Diluted earnings per share

Net income

$

90.3

$

51.1

$

219.6

$

182.8

Less: Income attributable to noncontrolling interest

(0.1

)

(0.1

)

(0.2

)

(0.5

)

Less: Amount allocated to nonvested participating shareholders

(0.5

)

(0.4

)

(1.2

)

(1.3

)

Net income attributable to TECO Energy available to common shareholders—diluted

$

89.7

$

50.6

$

218.2

$

181.0

Average shares outstanding-common

213.8

212.8

213.5

212.5

Assumed conversions of stock options, unvested restricted stock and contingent performance shares, net

1.5

2.3

1.6

2.1

Adjusted average shares outstanding common—diluted

215.3

215.1

214.6

Diluted earnings per share attributable to TECO Energy available to common shareholders

$

0.42

$

0.24

$

1.02

$

0.85

Anti-dilutive shares

1.4

2.5

1.8

4.3