CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (55,413)	$ (22,096)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	55,109	50,429
Stock-based compensation	47,239	45,271
Non-cash interest expense	9,661	9,986
Deferred tax benefit	(1,612)	(4,077)
Other	(6,150)	(1,925)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	(6,532)	8,815
Prepaid expenses and other assets	(11,095)	(9,104)
Accounts payable	(28,032)	(18,692)
Accrued expenses and other liabilities	7,452	9,241
Deferred revenue	67,529	55,100
Net cash provided by operating activities	78,156	122,948
Cash flows from investing activities:
Capital expenditures	(14,166)	(15,104)
Payments for business and technology acquisitions, net of cash acquired	(99,496)	(446,192)
Payments to Acquire Investments	5,063	0
Proceeds from sales and maturities of marketable securities and other investments	13,372	456
Net cash used in investing activities	(105,353)	(460,840)
Cash flows from financing activities:
Payments of debt	(1,307)	(144,835)
Proceeds from long-term debt, net of issuance costs	0	352,611
Payments for repurchase of common stock	(18,000)	0
Payments for settlement of share-based derivatives	(1,032)	(177)
Proceeds from (Payments for) Other Financing Activities	(904)	(1,012)
Excess tax benefits on employee equity awards	0	4,974
Proceeds from issuance of common stock from employee stock plans	1,188	1,906
Cash used to net share settle employee equity awards	(26,506)	(43,859)
Net cash (used in) provided by financing activities	(46,561)	169,608
Effects of exchange rate changes on cash and cash equivalents	296	(389)
Net decrease in cash and cash equivalents	(73,462)	(168,673)
Cash and cash equivalents at beginning of period	808,118	1,129,761
Cash and cash equivalents at end of period	$ 734,656	$ 961,088