Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Revenue:
Product and maintenance	$ 1,813,987	$ 1,683,771	$ 1,578,944
Services	129,045	132,312	123,147
Total revenue	1,943,032	1,816,083	1,702,091
Costs and expenses:
Cost of product and maintenance	156,676	183,291	155,659
Cost of service	80,714	73,201	82,794
Marketing and sales	419,161	395,194	402,432
Research and development	804,223	735,340	637,567
General and administrative	134,181	125,106	109,982
Amortization of acquired intangibles	14,716	18,095	23,716
Restructuring and other charges	9,406	40,955	4,511
Total costs and expenses	1,619,077	1,571,182	1,416,661
Income from operations	323,955	244,901	285,430
Interest expense	(25,664)	(23,670)	(28,311)
Other income, net	16,755	15,922	10,477
Income before provision for income taxes	315,046	237,153	267,596
Provision for income taxes	110,945	34,067	15,179
Net income	$ 204,101	$ 203,086	$ 252,417
Net income per share - basic (in usd per share)	$ 0.75	$ 0.71	$ 0.88
Net income per share - diluted (in usd per share)	$ 0.73	$ 0.70	$ 0.81
Weighted average common shares outstanding - basic (shares)	272,097	284,502	288,018
Weighted average common shares outstanding - diluted (shares)	280,221	291,256	312,302