Common Stock Repurchase Program - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions			1 Months Ended	4 Months Ended	9 Months Ended
	Sep. 06, 2016	May 04, 2016	Apr. 30, 2014	Sep. 06, 2016	Sep. 30, 2016	May 03, 2016	Apr. 28, 2016
Share Repurchases [Line Items]
Payments - accelerated share repurchase					$ 8,200,000
Accelerated share repurchase (shares)					0.1
Market price ($ per share)					$ 93.21
April 2014 Stock Repurchase Program
Share Repurchases [Line Items]
Repurchase of common stock, common stock authorized			$ 300,000,000
Stock repurchase program, period			3 years
Remaining authorized amount					$ 41,800,000
Payments - accelerated share repurchase						$ 50,000,000
Accelerated share repurchase (shares)	0.1	0.5		0.6
Market price ($ per share)						$ 81.89
April 2016 Repurchase
Share Repurchases [Line Items]
Repurchase of common stock, common stock authorized							$ 300,000,000.0