CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Hosting and professional services		$ 1,044,670	$ 1,045,722	$ 966,566
Product and licensing		509,226	544,019	493,911
Maintenance and support		269,196	252,557	267,698
Total revenues	[1]	1,823,092	1,842,298	1,728,175
Cost of revenues:
Hosting and professional services		636,189	678,378	654,599
Product and licensing		73,333	56,799	54,104
Maintenance and support		33,564	39,324	37,243
Amortization of intangible assets		36,833	50,886	57,892
Total cost of revenues		779,919	825,387	803,838
Gross profit		1,043,173	1,016,911	924,337
Operating expenses:
Research and development		275,886	278,735	239,925
Sales and marketing		303,503	311,712	324,370
General and administrative		175,008	225,884	163,065
Amortization of intangible assets		103,563	124,883	150,731
Intangible Assets Amortization Expense		66,730	73,997	92,839
Acquisition-related costs, net		8,909	16,093	27,708
Restructuring and other charges, net		80,465	57,026	59,923
Impairment of goodwill and other intangible assets		0	170,941	0
Total operating expenses		910,501	1,134,388	907,830
Income (loss) from operations		132,672	(117,477)	16,507
Other income (expense):
Interest income		13,705	9,327	6,922
Interest expense		(120,095)	(137,253)	(156,889)
Other expense, net		(538)	(1,821)	(21,210)
Income (loss) before income taxes		25,744	(247,224)	(154,670)
(Benefit) provision for income taxes		(88,594)	(62,320)	23,671
Net income (loss) from continuing operations		114,338	(184,904)	(178,341)
Net income from discontinued operations		99,472	24,976	27,345
Net income (loss)		$ 213,810	$ (159,928)	$ (150,996)
Net income (loss) per common share - basic:
Continuing operations (per share)		$ 0.40	$ (0.63)	$ (0.62)
Discontinued operations (per share)		0.35	0.08	0.10
Total net income (loss) per basic common share (per share)		0.75	(0.55)	(0.52)
Continuing operations (per share)		0.39	(0.63)	(0.62)
Discontinued operations (per share)		0.35	0.08	0.10
Diluted (per share)		$ 0.74	$ (0.55)	$ (0.52)
Weighted average common shares outstanding:
Basic (in shares)		286,347	291,318	289,348
Diluted (in shares)		290,125	291,318	289,348

[1] Segment revenues differ from reported revenues due to certain revenue adjustments related to acquisitions that would otherwise have been recognized but for the purchase accounting treatment of the business combinations. These revenues are included to allow for more complete comparisons to the financial results of historical operations and in evaluating management performance.