Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
Jul. 02, 2011	Jul. 03, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 136,600	$ 105,763
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	102,670	91,451
Share-based compensation expense	13,131	10,806
Provision for deferred income taxes	7,869	6,112
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(35,718)	12,675
Inventory	(1,969)	2,024
Prepaid expenses and other	(11,185)	14,591
Accounts payable	2,913	14,900
Accrued income taxes	477	(12,117)
Deferred revenue	14,494	(19,656)
Other accrued liabilities	19,346	(10,808)
Net cash provided by operating activities	248,628	215,741
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(51,677)	(56,011)
Capitalized software development costs	(41,055)	(41,248)
Purchases of investments	(628,686)	(319,056)
Maturities of investments	447,009	209,650
Purchase of other intangibles	(5,098)	(2,551)
Acquisition of businesses, net of cash acquired	(28,069)	(14,486)
Net cash used in investing activities	(307,576)	(223,702)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sale of future receivables		1,516
Repayment of long-term debt	(454)	(1,686)
Proceeds from excess tax benefits from stock compensation	26,570	13,112
Proceeds from exercise of options	29,972	14,224
Contingent consideration payments for acquisition of businesses	(779)
Net cash provided by financing activities	55,309	27,166
Effect of exchange rate changes on cash	3,184	(5,133)
Net increase (decrease) in cash and cash equivalents	(455)	14,072
Cash and cash equivalents at beginning of period	214,511	241,723
Cash and cash equivalents at end of period	214,056	255,795
Cash paid during the year for:
Interest	3,074	3,483
Income taxes, net of refund	40,061	63,415
Summary of acquisition transactions:
Fair value of net tangible assets	(8,053)	1,069
Fair value of intangible assets acquired	18,204	5,076
Fair value of goodwill	26,130	11,290
Less: Fair value of contingent liability payable	(5,235)	(1,725)
Less: Fair value of working capital settlement payable	(939)
Cash paid for acquisition	30,107	15,710
Cash acquired	(2,038)	(1,224)
Net cash used	$ 28,069	$ 14,486

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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The net change between the beginning and ending balance of cash and cash equivalents.

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The effect of exchange rate changes on cash balances held in foreign currencies.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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The net change during the period in the amount of cash payments due to taxing authorities for taxes that are based on the reporting entity's earnings.

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The net change during the reporting period, excluding the portion taken into income, in the liability reflecting services yet to be performed by the reporting entity for which cash or other forms of consideration was received or recorded as a receivable.

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The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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The net change during the reporting period in other expenses incurred but not yet paid. This element should be used when there is no other more specific or appropriate element.

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The net change during the reporting period in the value of this group of assets within the working capital section.

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The net change during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized

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The net cash inflow (outflow) from financing activity for the period.

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The net cash inflow (outflow) from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash outflow associated with the development or modification of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.

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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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The cash inflow associated with the amount received from holders exercising their stock options.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock options, amortization of restricted stock, and adjustment for officers compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration