CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 84,798	$ 105,401	$ 266,745	$ 283,786
Less: Net loss attributable to noncontrolling interests	1,259	0	2,862	0
Net income attributable to Microchip Technology	86,057	105,401	269,607	283,786
Unrealized holding gains (losses), net of tax effect of $12,380, $0, $12,392 and $497, respectively	19,844	59	19,439	(8,011)
Reclassification of realized transactions, net of tax effect of $0, $0, $12 and $776, respectively	(73)	(113)	(157)	(1,503)
Change in net foreign currency translation adjustment	1,046	0	(5,188)	0
Other comprehensive income (loss), net of taxes	20,817	(54)	14,094	(9,514)
Less: Other comprehensive (income) loss attributable to noncontrolling interests	(149)	0	866	0
Other comprehensive income (loss) attributable to Microchip Technology	20,668	(54)	14,960	(9,514)
Comprehensive income	105,615	105,347	280,839	274,272
Less: Comprehensive loss attributable to noncontrolling interests	(1,110)	0	(3,728)	0
Comprehensive income attributable to Microchip Technology	$ 106,725	$ 105,347	$ 284,567	$ 274,272