Capital (Tables)

12 Months Ended

Dec. 31, 2012

Capital

Schedule of weighted average assumptions used to estimate the grant date fair value of options granted

	2012	2011	2010
Dividend yield	2.00%	2.00%	2.00%
Expected life of option	3.7 years	4.2 years	5.1 years
Risk-free interest rate	0.46%	1.00%	2.09%
Expected stock price volatility	37.40%	47.98%	50.07%

Summary of the status of stock options and changes during the period

	2012					2011					2010
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at beginning of year		1,277,200		$	63.37		1,353,002		$	58.85		1,324,221		$	56.74
Granted		361,331			75.36		212,400			66.42		180,250			62.00
Exercised		(382,612	)		36.65		(243,901	)		40.48		(109,636	)		31.49
Lapsed or cancelled		(54,919	)		72.99		(44,301	)		65.89		(41,833	)		77.33
Balance at end of year		1,201,000		$	75.05		1,277,200		$	63.37		1,353,002		$	58.85
Options exercisable at end of year		479,913		$	86.85		644,429		$	72.31		631,224		$	69.42
Weighted average fair value of options granted during the year	$	6,602,967				$	4,647,554				$	4,333,281

Summary of restricted stock and charges during the period

	2012			2011			2010
Balance at beginning of year		2,912,456			2,728,290			2,330,532
Granted		92,729			185,333			400,925
Cancelled		(200,284	)		(1,167	)		(3,167	)
Balance at end of year		2,804,901			2,912,456			2,728,290
Vested during the year		408,800			66,299			153,644
Compensation expense recorded	$	6,930,381		$	17,365,401		$	15,327,206
Weighted average fair value of restricted stock granted during the year	$	7,023,942		$	21,768,084		$	28,269,983

Schedule of earnings per share calculation

Earnings per unit for the years ended December 31, 2012, 2011 and 2010 was computed as follows (amounts in thousands):

Numerator (Income)	2012		2011		2010
Basic Earnings:
Income attributable to SLGOP common unitholders	$	161,581	$	631,861	$	275,400
Effect of Dilutive Securities:
Stock options		—		—		—
Diluted Earnings:
Income attributable to SLGOP common unitholders	$	161,581	$	631,861	$	275,400

Denominator Weighted Average (Units)	2012		2011		2010
Basic Shares:
Units available to common unitholders		92,526		85,747		79,422
Effect of Dilutive Securities:
3.0% exchangeable senior debentures due 2017		—		—		—
3.0% exchangeable senior debentures due 2027		—		—		—
4.0% exchangeable senior debentures due 2025		—		—		—
Stock-based compensation plans		347		497		339
Diluted Units		92,873		86,244		79,761