Stockholders' Equity - Schedule of Common Stock Share Repurchase Programs Authorized by Board of Directors from Time to Time and Related Repurchase Activity and Available Authorized (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Equity Class Of Treasury Stock [Line Items]
Cost of repurchases	$ 193,307,000	$ 192,000,000
November 4, 2015 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Nov. 04, 2015
Expiration date	Nov. 04, 2017
Amount authorized	$ 150,000,000
Cost of repurchases	$ 150,000,000
September 6, 2016 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Sep. 06, 2016
Expiration date	Dec. 31, 2017
Amount authorized	$ 250,000,000
Cost of repurchases	$ 250,000,000
February 20, 2017 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Feb. 20, 2017
Expiration date	Dec. 31, 2018
Amount authorized	$ 250,000,000
Cost of repurchases	$ 250,000,000
February 20, 2018 [Member]
Equity Class Of Treasury Stock [Line Items]
Effective date	Feb. 20, 2018
Expiration date	Dec. 31, 2019
Amount authorized	$ 350,000,000
Cost of repurchases	66,707,000
Authorization available	$ 283,293,000