Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balances at Jan. 02, 2016	$ 1,243,082	$ 199	$ 636,501	$ 877,817	$ (96,800)	$ (174,635)
Balances (in shares) at Jan. 02, 2016		228,729,585
Balances, treasury shares at Jan. 02, 2016						(16,463,137)
Net income	163,776			163,776
Derivative instruments, net of tax	9,129				9,129
Pension and postretirement plans, net of tax	4,388				4,388
Stock repurchases	(126,300)		(1,125)			$ (125,175)
Stock repurchases (in shares)						(6,892,322)
Exercise of stock options	27,631		(4,323)			$ 31,954
Exercise of stock options (in shares)						2,506,255
Issuance of deferred stock awards			(1,411)			$ 1,411
Issuance of deferred stock awards (in shares)						111,868
Amortization of share-based compensation awards	18,772		18,772
Income tax benefits related to share-based payments	675		675
Performance-contingent restricted stock awards issued (Note 19)			(4,519)			$ 4,519
Performance-contingent restricted stock awards issued (in shares)						424,787
Issuance of deferred compensation			(114)			$ 114
Issuance of deferred compensation (in shares)						5,765
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(583)			(583)
Dividends paid	(130,490)			(130,490)
Balances at Dec. 31, 2016	1,210,080	$ 199	644,456	910,520	(83,283)	$ (261,812)
Balances (in shares) at Dec. 31, 2016		228,729,585
Balances, treasury shares at Dec. 31, 2016						(20,306,784)
Net income	150,120			150,120
Derivative instruments, net of tax	(5,422)				(5,422)
Pension and postretirement plans, net of tax	4,146				4,146
Stock repurchases	(2,671)					$ (2,671)
Stock repurchases (in shares)						(140,135)
Exercise of stock options	19,313		(3,610)			$ 22,923
Exercise of stock options (in shares)						1,773,336
Issuance of deferred stock awards			(1,789)			$ 1,789
Issuance of deferred stock awards (in shares)						138,354
Amortization of share-based compensation awards	16,093		16,093
Performance-contingent restricted stock awards issued (Note 19)			(4,240)			$ 4,240
Performance-contingent restricted stock awards issued (in shares)						328,947
Issuance of deferred compensation			(38)			$ 38
Issuance of deferred compensation (in shares)						2,901
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(553)			(553)
Dividends paid	(140,429)			(140,429)
Balances at Dec. 30, 2017	$ 1,250,677	$ 199	650,872	919,658	(84,559)	$ (235,493)
Balances (in shares) at Dec. 30, 2017		228,729,585
Balances, treasury shares at Dec. 30, 2017	(18,203,381)					(18,203,381)
Net income	$ 157,160			157,160
Derivative instruments, net of tax	4,057				4,057
Pension and postretirement plans, net of tax	(9,863)				(9,863)
Stock repurchases	(2,489)					$ (2,489)
Stock repurchases (in shares)						(120,147)
Exercise of stock options	791		(151)			$ 942
Exercise of stock options (in shares)						72,785
Issuance of deferred stock awards			(1,206)			$ 1,206
Issuance of deferred stock awards (in shares)						92,935
Amortization of share-based compensation awards	8,148		8,148
Performance-contingent restricted stock awards issued (Note 19)			(4,062)			$ 4,062
Performance-contingent restricted stock awards issued (in shares)						313,906
Issuance of deferred compensation			(124)			$ 124
Issuance of deferred compensation (in shares)						9,524
Reclassification of stranded income tax effects to retained earnings(Note 2)				18,806	(18,806)
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(498)			(498)
Dividends paid	(149,716)			(149,716)
Balances at Dec. 29, 2018	$ 1,258,267	$ 199	$ 653,477	$ 945,410	$ (109,171)	$ (231,648)
Balances (in shares) at Dec. 29, 2018		228,729,585
Balances, treasury shares at Dec. 29, 2018	(17,834,378)					(17,834,378)