Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013
Assets, Current [Abstract]
Cash and cash equivalents	$ 315,260	$ 202,377
Short-Term Investments	673,532	677,004
Receivables, Net	614,930	582,926
Inventory	31,710	32,299
Prepaid Expense and Other	175,074	175,488
Deferred Income Taxes, Net	92,763	91,614
Total Current Assets	1,903,269	1,761,708
Property and Equipment, Net	863,684	792,781
Software Development Costs, Net	384,813	347,077
Goodwill	324,108	307,422
Intangible Assets, Net	137,069	144,132
Long-Term Investments	478,963	554,873
Other Assets	173,369	190,371
Total Assets	4,265,275	4,098,364
Liabilities, Current [Abstract]
Accounts Payable	148,854	145,019
Current Installments of Long-term Debt and Capital Lease Obligations	59,287	54,107
Deferred Revenue	228,166	209,746
Accrued Payroll and Tax Withholdings	141,160	147,986
Other Accrued Expenses	95,055	83,574
Total Current Liabilities	672,522	640,432
Long-term Debt and Capital Lease Obligations	96,084	111,717
Deferred Income Taxes and Other Liabilities	229,083	170,392
Deferred Revenue	7,817	8,159
Total Liabilities	1,005,506	930,700
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $.01 par value, 500,000,000 shares authorized, 345,664,766 shares issued at June 28, 2014 and 344,338,030 shares issued at December 28, 2013	3,457	3,443
Additional Paid in Capital	865,386	812,853
Retained Earnings	2,641,607	2,393,048
Treasury stock, 4,652,515 shares at June 28, 2014 and 570,616 shares at December 28, 2013	(245,333)	(28,251)
Accumulated Other Comprehensive Loss, Net	(5,348)	(13,429)
Total Shareholders' Equity	3,259,769	3,167,664
Total Liabilities and Shareholders' Equity	$ 4,265,275	$ 4,098,364