Share-Based Awards (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

Assumptions used in calculating the lattice-based fair value of options granted during 2015, 2014 and 2013 were as follows:

	2015		2014		2013
Expected average term (in years)	6.0		6.1		6.1
Expected volatility	24% - 30%		25% - 34%		27% - 36%
Weighted average volatility	28	%	32	%	33	%
Expected dividend yield	2.0	%	1.8	%	1.6	%
Risk-free interest rate	0.1% - 2.0%		0.1% - 2.8%		0.1% - 2.1%

Summary Of Stock Option Transactions

The following table summarizes the stock option transactions for the year ended December 31, 2015 (in thousands except for per share amounts):

	Options		Weighted- Average Price
Options outstanding, beginning of period	2,717		$	43
Options granted	468		$	63
Options exercised	(517	)	$	39
Options forfeited	(165	)	$	64
Options outstanding, end of period	2,503		$	47
Exercisable, end of period	1,888		$	42

Summary Of The Aggregate Intrinsic Value Related To Options Outstanding, Exercisable And Exercised

The following table summarizes the aggregate intrinsic value related to options outstanding, exercisable and exercised as of and for the years ended December 31 (in thousands):

	2015		2014		2013
Exercised	$	9,890	$	31,623	$	28,879
Outstanding	$	16,605	$	61,947	$	100,054
Exercisable	$	16,605	$	54,071	$	81,930

Stock Options Outstanding By Price Range

Stock options outstanding at December 31, 2015 (options in thousands):

Price Range	Weighted-Average Contractual Life	Options	Weighted-Average Exercise Price
$10.01 to $20	3.1	322	$	13
$20.01 to $30	4.0	200	$	24
$30.01 to $40	2.1	202	$	39
$40.01 to $50	5.1	418	$	44
$50.01 to $60	4.5	464	$	52
$60.01 to $70	6.4	897	$	64
Options outstanding	4.9	2,503	$	47
Options exercisable	3.7	1,888	$	42

Assumptions Used In Calculating Fair Value Of Options

The assumptions used to determine the fair value of the SAR awards at December 31, 2015 and 2014 were as follows:

	2015		2014
Expected average term (in years)	5.3 - 7.4		3.7 - 5.4
Expected volatility	28% - 30%		25% - 31%
Expected dividend yield	2.7	%	1.7	%
Risk-free interest rate	0.2% - 2.3%		0.0% - 2.3%

Summary Of Stock Appreciation Right Transactions

The following table summarizes the SAR transactions for the year ended December 31, 2015 (in thousands except for per share amounts):

	SARs		Weighted-Average Price
Outstanding, beginning of period	176		$	30
Granted	12		$	63
Exercised	(26	)	$	26
Forfeited	—		$	—
Outstanding, end of period	162		$	33
Exercisable, end of period	137		$	28

Summary Of Restricted Stock Unit Transactions

The following table summarizes the RSUI transactions for the year ended December 31, 2015 (in thousands except for per share amounts):

	Restricted Stock Unit		Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning of period	129		$	66
Granted	64		$	47
Vested	(64	)	$	56
Forfeited	(20	)	$	50
Nonvested, end of period	109		$	49

The following table summarizes the RSUs settled in stock and restricted stock transactions for the year ended December 31, 2015 (in thousands except for per share amounts):

	Restricted Shares		Grant Date Fair Value Per Share
Nonvested, beginning of period	920		$	54
Granted	472		$	63
Vested	(454	)	$	53
Forfeited	(88	)	$	62
Nonvested, end of period	850		$	59