CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash flow from operating activities:
Net income	$ 277,779	$ 231,147
Adjustments for cash from operating activities:
Depreciation and amortization	57,208	49,493
Net change in receivables sold under Receivables Securitization Facility		(82,000)
Stock-based compensation expense	13,381	11,615
Change in contingent acquisition related obligations (Note 15)	(17,813)
Excess tax benefits from stock-based compensation payment arrangements	(5,493)	(1,333)
Net change in components of working capital	(115,869)	(77,315)
Net change in other long-term assets and liabilities	3,154	4,264
Cash flow provided by operating activities	212,347	135,871
Cash flow from investing activities:
Additions to property, plant and equipment	(45,780)	(43,086)
Purchases of short-term investments	(69,330)	(87,050)
Sales and maturities of short-term investments	82,324	42,459
Acquisitions, net of cash acquired	(51,889)	(13,624)
Cash flow used in investing activities	(84,675)	(101,301)
Cash flow from financing activities:
Borrowings under credit facilities	489,200	102,582
Repayments under credit facilities	(136,821)	(73,800)
Payments of fees and expenses related to debt financing	(2,105)
Proceeds from exercise of stock options	21,451	7,397
Excess tax benefits from stock-based compensation payment arrangements	5,493	1,333
Payment of contingent acquisition related obligations	(40,000)
Payments to shareholders of noncontrolling interests	(27,122)	(2,421)
Purchase and retirement of treasury stock	(360,998)
Dividend payments	(5,241)	(5,197)
Cash flow (used in) provided by financing activities	(56,143)	29,894
Effect of exchange rate changes on cash and cash equivalents	13,791	(12,400)
Net change in cash and cash equivalents	85,320	52,064
Cash and cash equivalents balance, beginning of period	525,888	384,613
Cash and cash equivalents balance, end of period	611,208	436,677
Cash paid during the year for:
Interest	20,527	20,100
Income taxes	$ 83,496	$ 69,080

The change in contingent acquisition related obligations.

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This element represents the cash outflow for payment of contingent consideration obligations related to acquisition.

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Cash outflows to either return capital to noncontrolled interest, which generally occurs when noncontrolling shareholders reduce their ownership stake (in a subsidiary of the entity); or from payment of dividends or other distributions to noncontrolling interest holders.

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The cash inflow from sales, maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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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 aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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 amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The net change during the reporting period in the amount owed to the reporting entity by counterparties in securitized loan transactions.

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The net change during the reporting period of all current assets and liabilities used in operating activities.

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For entities with classified balance sheets, the net change during the reporting period in the value of other assets or liabilities used in operating activities, that are not otherwise defined in the taxonomy. For entities with unclassified balance sheets, the net change during the reporting period in the value of all other assets or liabilities used in operating activities.

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The amount of cash paid during the current period for interest owed on money borrowed, net 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 generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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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 cash outflow to reacquire common stock during the period.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders.

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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 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 for securities or other assets acquired with excess cash, having ready marketability, which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

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

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow to pay off an obligation from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity.

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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.

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