Stock Based Compensation Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Stock-Based Compensation [Abstract]

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

The table below represents the assumptions used to value stock options granted during the years ended December 31,:

	2014			2013			2012
Expected volatility	22.3		%	27.1		%	33.6		%
Risk-free interest rate	1.8		%	1.4		%	0.7		%
Expected dividend yield	1.3		%	1.2		%	1.7		%
Expected term of options (in years)	4.58			4.80			5.00
Weighted average fair value per option	$	12.47		$	12.03		$	9.72

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The following table summarizes information about stock options outstanding and exercisable (in thousands, except exercise price and remaining life data):

OPTIONS OUTSTANDING					OPTIONS EXERCISABLE
Range of Exercise Prices	Number Outstanding at December 31, 2014	Weighted Average Remaining Contractual Life (in years)	Weighted Average Exercise Price		Number Exercisable at December 31, 2014	Weighted Average Remaining Contractual Life (in years)	Weighted Average Exercise Price
$20.87 - 32.71	187	5.23	$	26.96	115	4.27	$	25.24
32.72 - 44.56	146	5.59	36.92		56	2.84	36.59
44.57 - 56.41	64	4.15	54.00		38	0.91	53.33
56.42 - 68.23	64	8.94	62.42		4	1.18	57.98
$20.87 - 68.23	461	5.71	$	38.78	213	3.24	$	33.84

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity under the Company’s stock-based compensation plans, including the ESPP, for the year ended December 31, 2014, is presented below (in thousands, except exercise price data):

	2014
	Shares		Weighted Average Exercise Price
Options outstanding, beginning of year	766		$	36.43
Options granted	70		62.49
Options exercised	(337	)	38.27
Options forfeited	(38	)	39.15
Options outstanding, end of year	461		38.78
Options exercisable, end of year	213		$	33.84

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

A summary of nonvested restricted stock and restricted stock unit award activity and performance-based restricted stock unit activity for the year ended December 31, 2014, is presented below (in thousands, except fair value data):

	2014
	Shares/units		Weighted Average Grant Date Fair Value
Nonvested shares/units, beginning of year	1,423		$	33.33
Shares/units awarded	350		59.34
Shares/units vested	(586	)	31.81
Shares/units forfeited	(233	)	36.35
Nonvested shares/units, end of year	954		$	43.07