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Earnings Per Share (Notes)
 12 Months Ended
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Earnings Per Share [Text Block]
Earnings per Share
Basic earnings per share are based on the weighted-average number of shares of common stock outstanding. Diluted earnings per share are based upon the weighted-average number of shares of common stock outstanding plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method. This method requires that the effect of potentially dilutive common stock equivalents (employee stock options, stock settled stock appreciation rights, incentive shares, performance shares and warrants) be excluded from the calculation of diluted earnings per share for the periods in which losses from continuing operations are reported because the effect is anti-dilutive. The following table sets forth the computation of basic and diluted earnings per share:
 
Year ended December 31,
Dollar and share amounts in millions, except per share amounts
2015
 
2014
 
2013
Numerator:
 
 
 
 
 
Net income (loss):
 
 
 
 
 
Income (loss) from continuing operations
$
(86.0
)
 
$
(73.4
)
 
$
177.4

Loss from discontinued operations
(2.1
)
 
(2.0
)
 
(0.3
)
Net income (loss)
$
(88.1
)
 
$
(75.4
)
 
$
177.1

Denominator:
 
 
 
 
 
Denominator for basic earnings per share:
 
 
 
 
 
Weighted average common shares outstanding
142.4

 
141.1

 
139.6

Effect of dilutive securities:
 
 
 
 
 
Dilutive effect of employee stock plans
—

 
—

 
2.5

Dilutive effect of stock warrants
—

 
—

 
2.2

Dilutive potential common shares
—

 
—

 
4.7

Denominator for diluted earnings per share:
 
 
 
 
 
Adjusted weighted average shares
142.4

 
141.1

 
144.3

Basic earnings per share:
 
 
 
 
 
Income (loss) from continuing operations
$
(0.60
)
 
$
(0.52
)
 
$
1.27

Loss from discontinued operations
(0.02
)
 
(0.01
)
 
—

Net income (loss) per share
$
(0.62
)
 
$
(0.53
)
 
$
1.27

Diluted earnings per share:
 
 
 
 
 
Income (loss) from continuing operations
$
(0.60
)
 
$
(0.52
)
 
$
1.23

Loss from discontinued operations
(0.02
)
 
(0.01
)
 
—

Net income (loss) per share
$
(0.62
)
 
$
(0.53
)
 
$
1.23


Stock options, warrants, SSARs and performance shares related to approximately 4.9 million and 5.8 million common shares for the years ended December 31, 2015 and December 31, 2014 were considered anti-dilutive for purposes of LP’s earnings per share calculation due to LP’s loss position from continuing operations. Stock options, warrants and SSARs related to approximately 2.5 million common shares were considered not in-the-money for purposes of LP's earnings per share calculation for the year ended December 31, 2013.
At December 31, 2015, outstanding warrants were exercisable to purchase approximately 411,579 shares.