Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2016

October 2014 Share Repurchase Program

Schedule of stock repurchases made under open market

        Pursuant to this program, the Company made open market purchases as follows (aggregate cost excludes broker commissions and is reflected in millions):

Period	Total Number of Shares Purchased		Average Price Paid per Share		Aggregate Cost
November 24, 2014 - December 31, 2014		232,170	$	60.65	$	14.1
January 1, 2015 - October 21, 2015		3,153,156		58.96		185.9
		3,385,326			$	200.0

October 2015 Share Repurchase Program

Schedule of stock repurchases made under open market

Pursuant to this program, the Company made purchases as follows (aggregate cost excludes broker commissions and is reflected in millions):

Period	Total Number of Shares Purchased		Average Price Paid per Share		Aggregate Cost
October 26, 2015 - December 31, 2015		345,044	$	53.46	$	18.4
January 1, 2016 - June 30, 2016		375,507		67.78		25.5
		720,551			$	43.9