Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2011

Employee Benefit Plans

Schedule of Employee Option Plan

	Six Months Ended June 30, 2011
				Weighted Average
	Options			Exercise Price
Outstanding at beginning of period		1,272,739		$	38.77
Granted		494,885			61.51
Exercised		(128,487	)		37.55
Forfeited		(27,819	)		48.54
Expired		(170	)		39.02
Outstanding at end of period		1,611,148		$	45.68

Schedule of Assumptions Used In the Option-Pricing Model

	Options Granted During
	the Six Months Ended
	June 30, 2011
Expected term of option	5.48 years
Weighted average risk-free interest rate		2.33	%
Weighted average expected volatility		31.51	%
Dividend yield		1.00	%
Weighted average fair value on grant date	$	18.27

Schedule of Restricted Stock Units Award Activity

	Six Months Ended June 30, 2011
				Weighted Average
				Grant Date Fair
	RSUs			Value
Outstanding RSUs at beginning of period		851,078		$	39.88
RSUs granted		45,239			61.51
Performance-based RSUs granted		139,210			61.51
RSUs fully vested		(130,252	)		42.59
RSUs forfeited		(12,198	)		37.24
Outstanding RSUs at end of period		893,077		$	43.99

Schedule of Long-Term Incentive Plan Awards

	Six Months Ended June 30, 2011
				Weighted Average
				Grant Date Fair
	LTIP			Value
Outstanding LTIP awards at beginning of period		773,411		$	41.74
Additional LTIP awards granted due to the achievement of 2008 — 2010 performance criteria		212,938			43.27
LTIP forfeited		(13,500	)		42.48
LTIP awards vested		(638,813	)		43.27
Outstanding LTIP awards at end of period		334,036		$	39.76

Schedule of Stock Related Compensation Expense Relating To the Stock Options, RSUs, LTIP and Cash Equivalent Awards

	For the Three Months Ended				For the Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Stock Options	$	997	$	758	$	2,176	$	1,550
RSUs		3,707		3,327		7,529		7,041
LTIP		1,558		3,842		2,407		8,863
Cash-equivalent stock awards		3,406		3,012		8,575		5,321
Total	$	9,668	$	10,939	$	20,687	$	22,775