Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities:
Net cash used in operating activities - continuing operations	$ (45,037)	$ (80,018)
Net cash (used in) provided by operating activities - discontinued operations	(2,987)	4,653
Net cash used in operating activities	(48,024)	(75,365)
Cash flows from investing activities:
Proceeds from sales and maturities of investments	394	25,780
Acquisition of businesses, including adjustments, net of cash acquired	(660)	(11,958)
Purchase of property and equipment	(9,454)	(9,291)
Capitalization of software development costs	(2,298)	(1,662)
Net change in restricted cash and bank time deposits	1,816	(13,114)
Settlement of derivative financial instruments not designated as hedges	(266)	(1,178)
Other, net	309	1,569
Net cash used in investing activities-continuing operations	(10,159)	(9,854)
Net cash used in investing activities-discontinued operations	(153)	(144)
Net cash used in investing activities	(10,312)	(9,998)
Cash flows from financing activities:
Debt issuance costs and other debt-related costs	(159)	(15,034)
Proceeds from borrowings, net of original issuance discount	0	597,000
Repayment of bank loans, long-term debt and other financing obligations	(3,518)	(589,811)
Repurchase of common stock in CTI and subsidiary	(2,245)	(2,252)
Proceeds from exercises of stock options of CTI and subsidiary	1,420	8,716
Payments of contingent consideration for business combinations (financing portion)	(5,140)	(2,004)
Net cash used in financing activities-continuing operations	(9,642)	(3,385)
Net cash used in financing activities-discontinued operations	0	0
Net cash used in financing activities	(9,642)	(3,385)
Effects of exchange rates on cash and cash equivalents	(3,157)	8,048
Net decrease in cash and cash equivalents	(71,135)	(80,700)
Cash and cash equivalents, beginning of period including cash from discontinued operations	515,637	581,390
Cash and cash equivalents, end of period including cash from discontinued operations	444,502	500,690
Less: cash and cash equivalents of discontinued operations, at end of period	(29,349)	(24,985)
Cash and cash equivalents, end of period	415,153	475,705
Non-cash investing and financing transactions:
Accrued but unpaid purchases of property and equipment	2,363	889
Inventory transfers to (from) property and equipment	1,102	14,151
Liabilities for contingent consideration recorded for business combination	0	904
Leasehold improvements funded by lease incentive	$ 2,406	$ 0