Consolidated Statement Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Cash flows from operating activities:
Cash received from customers	$ 14,595,183	$ 13,484,962
Cash paid to vendors and employees	(14,498,501)	(13,042,982)
Interest paid, net	(12,644)	(11,731)
Income taxes paid	(34,344)	(37,989)
Net cash provided by operating activities	49,694	392,260
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	0	8,044
Acquisition of trademarks	0	(1,519)
Proceeds from sale of property and equipment	7,121	0
Expenditures for property and equipment	(7,337)	(7,115)
Software and software development costs	(4,131)	(7,819)
Net cash used in investing activities	(4,347)	(8,409)
Cash flows from financing activities:
Proceeds from the reissuance of treasury stock	669	1,139
Acquisition earn-out payment	(5,060)	(6,183)
Net borrowings (repayments) on revolving credit loans	4,704	(125,676)
Principal payments on long-term debt	(285)	(261)
Excess tax benefit from stock-based compensation	650	894
Net cash provided by (used in) financing activities	678	(130,087)
Effect of exchange rate changes on cash and cash equivalents	(4,598)	(7,488)
Net increase in cash and cash equivalents	41,427	246,276
Cash and cash equivalents at beginning of year	570,101	340,564
Cash and cash equivalents at end of period	611,528	586,840
Reconciliation of net income to net cash provided by operating activities:
Net income	52,795	32,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,929	36,075
Gain on sale of building	(2,350)	0
Provision for losses on accounts receivable	5,558	7,070
Stock-based compensation expense	5,842	5,318
Accretion of debt discount on Senior Notes	132	132
Excess tax benefits from stock-based compensation	(650)	(894)
Changes in operating assets and liabilities:
Accounts receivable	219,877	357,085
Inventories	253,775	177,381
Prepaid expenses and other assets	42,731	130,485
Accounts payable	(501,794)	(287,967)
Accrued expenses and other liabilities	(62,151)	(64,880)
Total adjustments	(3,101)	359,805
Net cash provided by operating activities	$ 49,694	$ 392,260