Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Amount [Member]	Capital In Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 28, 2014	$ 2,042,102	$ 112,481	$ 94,276	$ 1,810,545	$ 24,800
Net income	212,425			212,425
Other comprehensive income (loss)	(70,756)				(70,756)
Dividends	(31,539)			(31,539)
Exercise of employee stock options and related income tax benefits	17,340	849	16,491
Issuance of common stock for employee benefit plans	3,686	78	3,608
Cost of Repurchased Common Shares, Repurchase Plan and Amount for Statutory Tax Withholding Obligations	76,439	1,595	74,844
Issuance of common stock for long-term incentive program	9,319	221	9,098
Stock compensation	4,303	0	4,303	0	0
Ending Balance at Jan. 03, 2016	2,110,441	112,034	52,932	1,991,431	(45,956)
Net income	234,299		0	234,299
Other comprehensive income (loss)	(54,905)				(54,905)
Dividends	(30,629)			(30,629)	0
Exercise of employee stock options and related income tax benefits	14,418	576	13,842
Issuance of common stock for employee benefit plans	2,463	50	2,413
Cost of Repurchased Common Shares, Repurchase Plan and Amount for Statutory Tax Withholding Obligations	151,801	3,275	58,058	90,468
Issuance of common stock for long-term incentive program	10,425	232	10,193
Stock compensation	4,631	0	4,631	0	0
Ending Balance at Jan. 01, 2017	2,153,570	109,617	26,130	2,118,684	(100,861)
New Accounting Pronouncement or Change in Accounting Principle, Description of Prior-period Info Retrospectively Adjusted	14,228	0	177	14,051	0
Net income	292,633			292,633
Other comprehensive income (loss)	54,343				54,343
Dividends	(30,800)			(30,800)
Exercise of employee stock options and related income tax benefits	18,004	578	17,426
Issuance of common stock for employee benefit plans	2,467	37	2,430
Cost of Repurchased Common Shares, Repurchase Plan and Amount for Statutory Tax Withholding Obligations	4,367	79	4,288
Issuance of common stock for long-term incentive program	12,353	208	12,145
Stock compensation	4,985	0	4,985	0	0
Ending Balance at Dec. 31, 2017	$ 2,503,188	$ 110,361	$ 58,828	$ 2,380,517	$ (46,518)