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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Schedule of Stock Repurchased and Retired

Share repurchases under this authorization were as follows:

		Repurchases Occurring in the Nine Months Ended September 30, 2018							Cumulative Repurchases as of September 30, 2018
		Shares			Average Price				Shares			Average Price
2016 Share Repurchase Authorization		1,199,257			$	93.11			2,241,982			$	88.81

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Tabular disclosure of stock repurchased and retired during the period.

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