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Share repurchases	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Share Repurchases	13. Share repurchases During the nine months ended September 30, 2016, the Company repurchased a total of 9,930 shares of its common stock for $656,087, or an average price of $66.07 per share. The Company also repurchased 3,367 shares of its common stock for $212,353, or an average price of $63.07 per share, subsequent to September 30, 2016. On July 13, 2016, the Company’s Board of Directors approved an additional share repurchase authorization in the amount of $1,240,748. This share repurchase approval is in addition to the $259,252 remaining at that time under the Company’s Board of Directors’ prior share repurchase authorization announced in April 2015. As a result of these transactions, the Company has a total of $881,040 available under the current Board repurchase authorization as of October 31, 2016. These share repurchase authorizations have no expiration dates. However, the Company remains subject to share repurchase limitations under the terms of its senior secured credit facilities and the indentures governing its senior notes.

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- Definition

The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.

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