Revenue Recognition Effect of Adopting ASC 606 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Effect of Adopting ASC 606 [Line Items]
Accounts Receivable, Net, Current	$ 331,609		$ 328,421
Inventories, net	459,151		424,639
Prepaid expenses and other	48,464		55,427
Long-term deferred tax assets	46,284		44,565
Accounts payable	145,366		146,333
Accrued expenses	305,132		322,171
Deferred Tax Liabilities, Net, Noncurrent	91,433		87,815
Retained earnings	1,757,500		1,697,618
Net sales	584,800	$ 530,297
Cost of sales	373,167	320,847
Provision for income taxes	21,281	22,705
Net earnings	$ 65,420	$ 70,702
Earnings Per Share, Basic	$ 1.18	$ 1.24
Earnings Per Share, Diluted	$ 1.18	$ 1.24
Accounting Standards Update 2014-09 [Member]
Effect of Adopting ASC 606 [Line Items]
Accounts Receivable, Net, Current			(122)
Inventories, net			14,993
Prepaid expenses and other			(4,018)
Long-term deferred tax assets			1,319
Accrued expenses			16,557
Retained earnings			(4,405)
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Effect of Adopting ASC 606 [Line Items]
Inventories, net	$ 453,710
Prepaid expenses and other	51,630
Accrued expenses	310,104
Deferred Tax Liabilities, Net, Noncurrent	90,816
Retained earnings	1,756,051
Net sales	570,658
Cost of sales	362,686
Provision for income taxes	20,310
Net earnings	$ 62,731
Earnings Per Share, Basic	$ 1.13
Earnings Per Share, Diluted	$ 1.13
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Effect of Adopting ASC 606 [Line Items]
Inventories, net	$ 5,441
Prepaid expenses and other	(3,166)
Accrued expenses	4,180
Deferred Tax Liabilities, Net, Noncurrent	(456)
Retained earnings	(1,449)
Net sales	14,142
Cost of sales	10,481
Provision for income taxes	971
Net earnings	$ 2,689
BalanceUponAdoption [Member] | Accounting Standards Update 2014-09 [Member]
Effect of Adopting ASC 606 [Line Items]
Accounts Receivable, Net, Current			328,299
Inventories, net			439,632
Prepaid expenses and other			51,409
Long-term deferred tax assets			45,884
Accrued expenses			338,728
Retained earnings			$ 1,693,213