Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Fair Value Assumptions

The following table summarizes the assumptions we used for the three months ended March 31, 2015 and 2014:

	For the Three Months Ended March 31,
	2015		2014
Risk-free rate of return		1.47%		1.74%
Expected dividend yields		1.63%		1.49%
Expected award life (years)		4.71	4.85
Expected volatility		22.09%		24.91%

Summary of Restricted Share Activity

A summary of restricted share activity as of March 31, 2015 and changes during the three months then ended is as follows:

	Shares			Weighted-Average Grant Date Fair Value
Outstanding at January 1, 2015		313,716		$	35.17
Granted		51,873		$	46.57
Vested and issued		(110,982	)	$	29.88
Expired or forfeited		(3,569	)	$	36.38
Outstanding at March 31, 2015		251,038		$	39.85

Summary of Stock-Settled SARs Activity

A summary of stock-settled SARs activity as of March 31, 2015 and changes during the three months then ended is as follows:

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2015		1,313,901		$	28.65
Granted		243,306		$	37.33
Exercised		(24,622	)	$	28.11
Expired or forfeited		(9,210	)	$	30.68
Outstanding at March 31, 2015		1,523,375		$	29.26

Summary of Cash-Settled SARs Activity

A summary of cash-settled SARs activity as of March 31, 2015 and changes during the three months then ended is as follows:

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2015		2,001,451		$	32.76
Granted		866,673		$	47.83
Exercised		(31,461	)	$	29.77
Expired or forfeited		(70,547	)	$	36.28
Outstanding at March 31, 2015		2,766,116		$	37.42