Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Summary of Significant Accounting Policies [Line Items]
Financing Receivable, Sale	$ 106,300	$ 86,300	$ 213,200	$ 170,800
Financing Receivable, Significant Sales, Transaction Fees	200	300	500	700
Basic:
Net income	$ 196,582	$ 65,439	$ 348,348	$ 150,949
Shares (in shares)	163,023,000	162,154,000	162,974,000	162,814,000
Per Share (in usd per share)	$ 1.21	$ 0.40	$ 2.14	$ 0.93
Effect of dilutive securities: [Abstract]
Add: Option shares in the money and dilutive effect of non-vested stock (in shares)	5,402,000	5,882,000	5,567,000	6,315,000
Less: Pro forma treasury shares (in shares)	(828,000)	(2,037,000)	(868,000)	(2,166,000)
Diluted:
Net Income	$ 196,582	$ 65,439	$ 348,348	$ 150,949
Shares (in shares)	167,597,000	165,999,000	167,673,000	166,963,000
Per Share (in usd per share)	$ 1.17	$ 0.39	$ 2.08	$ 0.90
Stock Options [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	1,157,300	0	576,911
Non Vested Stock [Member]
Antidilutive Securities [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	259,281	626,783	234,527	540,776