Investments (Tables)

6 Months Ended

Jun. 29, 2013

Investments, Debt and Equity Securities [Abstract]

Available For Sale Securities

Following is a summary of AFS securities as of June 29, 2013 and December 29, 2012:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(Amounts are in thousands)
June 29, 2013
Tax exempt bonds	$	3,456,104		18,819		21,876	3,453,047
Taxable bonds	1,379,442			9,147		6,713	1,381,876
Restricted investments	170,000			—		604	169,396
Equity securities	660,265			96,667		10,905	746,027
	$	5,665,811		124,633		40,098	5,750,346
December 29, 2012
Tax exempt bonds	$	3,115,963		33,787		2,646	3,147,104
Taxable bonds	1,141,514			17,667		355	1,158,826
Restricted investments	170,000			431		—	170,431
Equity securities	510,613			58,631		12,499	556,745
	$	4,938,090		110,516		15,500	5,033,106

Amortized Cost and Fair Value of Available For Sale Securities by Expected Maturity

The amortized cost and fair value of AFS securities by expected maturity as of June 29, 2013 and December 29, 2012 are as follows:

	June 29, 2013			December 29, 2012
	Amortized Cost		Fair Value	Amortized Cost	Fair Value
	(Amounts are in thousands)
Due in one year or less	$	907,813	911,765	792,946	797,260
Due after one year through five years	3,312,980		3,312,910	2,725,036	2,755,043
Due after five years through ten years	404,640		395,642	520,800	526,924
Due after ten years	210,113		214,606	218,695	226,703
	4,835,546		4,834,923	4,257,477	4,305,930
Restricted investments	170,000		169,396	170,000	170,431
Equity securities	660,265		746,027	510,613	556,745
	$	5,665,811	5,750,346	4,938,090	5,033,106

Temporarily Impaired Available For Sale Securities by Time Period Impaired

Following is a summary of temporarily impaired AFS securities by the time period impaired as of June 29, 2013 and December 29, 2012:

	Less Than 12 Months				12 Months or Longer			Total
	Fair Value		Unrealized Losses		Fair Value	Unrealized Losses		Fair Value	Unrealized Losses
	(Amounts are in thousands)
June 29, 2013
Tax exempt bonds	$	1,563,819		21,876	—		—	1,563,819		21,876
Taxable bonds	672,118			6,713	—		—	672,118		6,713
Restricted investments	169,396			604	—		—	169,396		604
Equity securities	112,909			8,720	8,212		2,185	121,121		10,905
Total temporarily impaired AFS securities	$	2,518,242		37,913	8,212		2,185	2,526,454		40,098
December 29, 2012
Tax exempt bonds	$	566,914		2,646	—		—	566,914		2,646
Taxable bonds	81,876			355	—		—	81,876		355
Equity securities	209,759			8,878	14,260		3,621	224,019		12,499
Total temporarily impaired AFS securities	$	858,549		11,879	14,260		3,621	872,809		15,500