Three Months Ended

Six Months Ended

March 31,

March 31,

2013

2012

2013

2012

Net income(1)

$

12.7

$

27.4

$

27.0

$

58.7

Weighted average shares outstanding — basic (millions)

62.7

62.2

62.6

62.1

Effect of dilutive stock options and unvested time-based restricted stock awards (millions)

0.4

0.4

0.3

0.3

Weighted average shares outstanding — diluted (millions)

63.1

62.6

62.9

62.4

Earnings per share — basic

$

0.20

$

0.44

$

0.43

$

0.95

Earnings per share — diluted

$

0.20

$

0.44

$

0.43

$

0.94