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Stock Incentive Plans and Stock Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule of Restricted Stock and Deferred Stock Awards

The activity related to the Company’s restricted stock and deferred stock awards and the corresponding weighted average grant-date fair values for the year ended December 31, 2018 are as follows:

		Number of Shares				Weighted Average Fair Value
Non-vested shares at January 1, 2018			1,041,034			$	60.21
Awarded			770,480			$	51.99
Forfeited			(69,293	)		$	56.65
Vested			(431,368	)		$	63.57
Non-vested shares at December 31, 2018			1,310,853			$	54.46

Schedule of Activity and Certain Other Information Related to Stock Option Awards

The activity and certain other information related to the Company’s outstanding stock option awards for the year ended December 31, 2018 are as follows:

		Number of Stock Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value (in millions)
Outstanding at January 1, 2018			246,342			$	27.51
Exercised			(133,366	)		$	27.38							$	2.8
Outstanding and exercisable at December 31, 2018			112,976			$	27.65				1.3			$	0.7

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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-Name Accounting Standards Codification
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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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