Segment Information (Revenue And Operating Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2012
Revenue	$ 1,356,967	$ 1,293,541		$ 1,255,679
Operating income	196,576	127,324		128,096
Sales and marketing expenses	(371,392)	(378,771)	[1]	(392,956)	[1]
General and administrative expenses	(144,003)	(136,999)	[1]	(119,085)	[1]
Other income (expense), net	(10,464)	(1,090)		(7,360)
Income before income taxes	186,112	126,234		120,736
Restructuring charges	28,406	52,197		24,928
Depreciation and amortization	77,307	76,551		66,471
Software Products [Member]
Revenue	1,032,230	977,523		935,472
Operating income	663,593	605,963	[1]	598,344	[1]
Restructuring charges	2,800	17,700		4,100
Depreciation and amortization	30,000	32,000		30,800
Services [Member]
Revenue	324,737	316,018		320,207
Operating income	48,378	37,131	[1],[2]	41,793	[1],[2]
Restructuring charges	9,800	11,300		4,000
Depreciation and amortization	7,400	6,100		4,800
General And Administrative [Member]
Restructuring charges	1,800	5,100		1,600
Sales And Marketing [Member]
Restructuring charges	$ 13,900	$ 18,100		$ 15,200

[1] We recorded restructuring charges of $28.4 million in 2014. Software Products included $2.8 million; Services included $9.8 million; sales and marketing expenses included $13.9 million; and general and administrative expenses included $1.8 million of the total restructuring charges recorded in 2014.We recorded restructuring charges of $52.2 million in 2013. Software Products included $17.7 million; Services included $11.3 million; sales and marketing expenses included $18.1 million; and general and administrative expenses included $5.1 million of the total restructuring charges recorded in 2013. We recorded restructuring charges of $24.9 million in 2012. Software Products included $4.1 million; Services included $4.0 million; sales and marketing expenses included $15.2 million; and general and administrative expenses included $1.6 million of the total restructuring charges recorded in 2012.

[2] The Software Products segment operating income includes depreciation and amortization of $30.0 million, $32.0 million, and $30.8 million in 2014, 2013, and 2012, respectively. The Services segment operating income includes depreciation and amortization of $7.4 million, $6.1 million, and $4.8 million in 2014, 2013, and 2012, respectively.We report revenue by the following three product areas: •CAD: PTC Creo® and PTC Mathcad®. •EPLM: PLM solutions (primarily PTC Windchill® and PTC Creo® ViewTM ) and ALM solutions (primarily PTC Integrity™). •SLM & IoT: PTC Arbortext® , PTC Servigistics®, ThingWorx® and Axeda®.