Consolidated Statement of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Cash flows from operating activities:
Net income	$ 89,973	$ 56,310
Adjustments to reconcile net income to cash provided (used) by operating activities:
Depreciation and amortization	14,419	13,924
Stock-based compensation	9,446	5,657
Excess tax benefit from stock-based compensation	(5,108)	(2,088)
Noncash charges for interest	458	507
Deferred income taxes	20,795	10,135
Changes in operating assets and liabilities, net of effects of acquisition
Trade accounts receivable	645,321	471,186
Inventory	(198,011)	(57,857)
Other current assets	(11,369)	23,723
Accounts payable	(298,631)	(383,483)
Changes in book overdrafts	(30,485)	(247,705)
Accrued expenses	(145,467)	(64,156)
Cash provided (used) by operating activities	91,341	(173,847)
Cash flows from investing activities:
Purchase of property and equipment	(24,760)	(32,875)
Sale of (investment in) marketable trading securities	270	(410)
Acquisition and earn-out payment, net of cash acquired	(333)	(1,066)
Cash used by investing activities	(24,823)	(34,351)
Cash flows from financing activities:
Proceeds from exercise of stock options	20,252	27,918
Repurchase of Class A Common Stock		(906)
Excess tax benefit from stock-based compensation	5,108	2,088
Repayments of senior unsecured term loan		(3,125)
Net proceeds (repayments of) revolving credit facilities	(6,322)	24,851
Cash provided by financing activities	19,038	50,826
Effect of exchange rate changes on cash and cash equivalents	14,200	20,703
Increase (decrease) in cash and cash equivalents	99,756	(136,669)
Cash and cash equivalents, beginning of period	891,403	1,155,551
Cash and cash equivalents, end of period	$ 991,159	$ 1,018,882