Treasury Stock (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Board-approved share repurchase program of common stock	$ 3,000,000	$ 3,000,000		$ 3,000,000
Stock repurchase program expiration date	Dec. 31, 2020
Repurchased shares under the share repurchase program		1.5	2.2	3.8	3.8
Payments for repurchase of common stock		$ 95,100	$ 133,600	$ 252,545	$ 248,147
Remaining authorization under the share repurchase program	$ 600,000	$ 600,000		$ 600,000