Stock-Based Compensation Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 31, 2016	Jan. 02, 2016
Stock Based compensation expense
Stock-based compensation effect on income before taxes	$ 30,867	$ 31,463	$ 90,073	$ 84,464
Cost of Sales [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	1,945	2,145	5,994	5,872
Research and Development [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	17,154	16,935	48,803	44,561
Selling, General and Administrative Expenses [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	$ 11,768	$ 12,383	$ 35,276	$ 34,031