Description Of Business And Summary of Significant Accounting Policies (Net Income Per Share Attributable To Micros Systems, Inc. Common Shareholders) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2010		Sep. 30, 2010		Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Description Of Business And Summary Of Significant Accounting Policies [Abstract]
Net income attributable to MICROS Systems, Inc.	$ 48,218	[1],[2]	$ 43,247	[1],[2]	$ 38,285	[1],[2]	$ 37,232	[1],[2]	$ 41,536	[1],[2]	$ 38,579	[1],[2]	$ 32,328	[1],[2]	$ 31,617	[1],[2]	$ 166,983	$ 144,059	$ 114,353
Effect of non-controlling interest put arrangement																	0	30	302
Net income available to MICROS Systems, Inc. common shareholders																	166,983	144,089	114,655
Average common shares outstanding																	80,300	80,726	79,856
Dilutive effect of outstanding stock options																	$ 1,938	$ 1,946	$ 1,592
Average common shares outstanding assuming dilution																	82,238	82,672	81,448
Basic net income per share attributable to MICROS Systems, Inc. common shareholders	$ 0.60	[1],[2]	$ 0.54	[1],[2]	$ 0.48	[1],[2]	$ 0.46	[1],[2]	$ 0.51	[1],[2]	$ 0.48	[1],[2]	$ 0.40	[1],[2]	$ 0.39	[1],[2]	$ 2.08	$ 1.78	$ 1.44
Diluted net income per share attributable to MICROS Systems, Inc. common shareholders	$ 0.59	[1],[2]	$ 0.53	[1],[2]	$ 0.47	[1],[2]	$ 0.45	[1],[2]	$ 0.50	[1],[2]	$ 0.47	[1],[2]	$ 0.39	[1],[2]	$ 0.39	[1],[2]	$ 2.03	$ 1.74	$ 1.41
Anti-dilutive weighted shares excluded from reconciliation																	1,702	701	1,882

[1] Fiscal years ended June 30, 2012 and 2011 include approximately $16.5 million ($11.3 million, net of tax, or $0.14 per diluted share) and approximately $12.4 million ($8.0 million, net of tax, or $0.10 per diluted share), respectively, in non-cash share-based compensation expenses. See Note 3 "Share-based Compensation." Fiscal years 2012 and 2011 also include other-than-temporary impairment losses of approximately $4.0 million and $4.3 million, respectively, for long-term investments. See Note 2 "Financial Instruments and Fair Value Measurements."

[2] The sum of quarterly amounts does not equal the sum of as reported amounts for the respective fiscal years due to rounding differences.