Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 28, 2019
Current assets:
Cash and cash equivalents	$ 615,615	$ 441,843
Short-term investments	442,473	99,931
Receivables, net	1,168,712	1,139,595
Inventory	23,027	23,182
Prepaid expenses and other	401,160	392,073
Total current assets	2,650,987	2,096,624
Property and equipment, net	1,804,083	1,858,772
Right-of-use assets	104,536	123,155
Software development costs, net	1,009,349	939,859
Goodwill	914,520	883,158
Intangible assets, net	329,249	364,439
Long-term investments	510,220	419,419
Other assets	198,152	209,196
Total assets	7,521,096	6,894,622
Current liabilities:
Accounts payable	235,755	273,440
Deferred revenue	393,293	360,025
Accrued payroll and tax withholdings	309,814	245,843
Other current liabilities	229,764	148,140
Total current liabilities	1,168,626	1,027,448
Long-term debt	1,336,069	1,038,382
Deferred Income Taxes, Noncurrent	376,035	377,657
Other liabilities	157,799	133,807
Total liabilities	3,038,529	2,577,294
Shareholders' Equity:
Common stock, $0.01 par value, 500,000,000 shares authorized, 373,224,832 shares issued at December 31, 2020 and 367,634,796 shares issued at December 28, 2019	3,732	3,676
Additional paid-in capital	2,288,806	1,905,171
Retained earnings	6,475,551	5,934,909
Treasury stock, 67,371,686 shares at December 31, 2020 and 56,723,546 shares at December 28, 2019	(4,164,718)	(3,407,768)
Accumulated other comprehensive loss, net	(120,804)	(118,660)
Total shareholders' equity	4,482,567	4,317,328
Total liabilities and shareholders' equity	$ 7,521,096	$ 6,894,622
Common Stock, par value	$ 0.01
Common Stock, Shares Authorized	500,000,000
Common stock, shares issued	373,224,832	367,634,796
Treasury stock, shares	67,371,686	56,723,546