Consolidated Statements of Cash Flow (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Consolidated net loss	$ (25,322)	$ (7,575)	$ (10,864)
Adjustments to reconcile net loss to net cash provided by operating activities:
Amortization of intangible assets	18,811	18,239	10,131
Depreciation and amortization of property and equipment	29,527	23,219	19,499
Accretion of discount and issuance costs on notes	19,655	12,146	11,333
Share-based compensation	65,102	57,193	35,974
Revaluation of contingent consideration	(6,694)	(7,274)	4,034
Deferred income taxes	(1,113)	(179)	1,253
Excess tax benefits from share-based compensation	(4,654)	(848)	(234)
Loss from equity investments	2,715	2,649	890
Payments of contingent consideration	(5,053)	0	0
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	(11,649)	(19,936)	(12,410)
Deferred costs and other assets	(11,687)	(13,428)	(14,819)
Accounts payable	194	1,665	2,986
Accrued liabilities	(5,284)	12,345	17,567
Deferred revenues	13,466	15,369	11,623
Net cash provided by operating activities	78,014	93,585	76,963
Investing activities:
Purchases of investments	(848,859)	(542,871)	(425,449)
Maturities of investments	519,212	527,380	541,388
Increase (decrease) in customer funding liabilities, net of changes in restricted cash	7,806	(8,523)	(26,776)
Investment in and loans to unconsolidated affiliates	(36,374)	(23,708)	(46,271)
Capital expenditures	(50,172)	(30,725)	(27,932)
Payments for acquisitions, net of cash acquired	(83,755)	(68,266)	(42,424)
Payments of contingent consideration related to acquisition of Etap	(1,266)	(5,275)	0
Net cash used in investing activities	(493,408)	(151,988)	(27,464)
Financing activities:
Equity issuance costs	(120)	0	0
Proceeds from borrowings on convertible senior notes, net	474,949	0	0
Proceeds from warrant	23,753	0	0
Payment for convertible senior note hedges	(58,161)	0	0
Investments in consolidated joint venture by noncontrolling interest	619	0	1,152
Payments on repurchase of common stock	(651)	(1,451)	(1,601)
Net proceeds from share-based equity award activity	2,321	2,817	1,980
Proceeds from employee stock purchase plan activity	3,158	2,304	1,855
Minimum tax withholding on restricted stock awards	(26,092)	(14,200)	(11,936)
Excess tax benefits from share-based compensation	4,654	848	234
Repayments on capital leases	0	0	(199)
Payments of contingent consideration	(9,351)	0	0
Net cash provided by (used in) financing activities	415,079	(9,682)	(8,515)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(263)	202	75
Net increase (decrease) in cash and cash equivalents	(578)	(67,883)	41,059
Cash and cash equivalents at beginning of period	302,274	370,157	329,098
Cash and cash equivalents at end of period	301,696	302,274	370,157
Supplemental cash flow information:
Cash paid for interest	7,188	7,188	7,367
Income tax payments (receipts), net	5,705	797	(833)
Common stock issued in connection with acquisition	$ 0	$ 0	$ 44,759