CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash from operating activities:
Net income	$ 520,379	$ 469,870
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	117,977	101,531
Stock-based compensation expense	29,382	26,584
Excess tax benefits from stock-based compensation payment arrangements	(29,569)	(18,853)
Net change in components of working capital	(24,276)	(24,249)
Net change in other long-term assets and liabilities	(6,458)	2,841
Net cash provided by operating activities	607,435	557,724
Cash from investing activities:
Additions to property, plant and equipment	(162,657)	(105,740)
Proceeds from disposals of fixed assets	2,222	2,084
Purchases of short-term investments	(478,846)	(538,152)
Sales and maturities of short-term investments	410,372	395,590
Acquisitions, net of cash acquired	(468,009)	(44,036)
Net cash used in investing activities	(696,918)	(290,254)
Cash from financing activities:
Proceeds from issuance of senior notes	1,498,133
Borrowings under credit facilities	563,500	490,800
Repayments under credit facilities	(1,570,695)	(327,043)
Payments of fees and expenses related to debt financing	(10,738)	(2,710)
Proceeds from exercise of stock options	88,782	79,587
Excess tax benefits from stock-based compensation payment arrangements	29,569	18,853
Payments to shareholders of noncontrolling interests	(3,620)	(4,371)
Purchase and retirement of treasury stock	(400,801)	(296,975)
Dividend payments	(101,924)	(33,472)
Net cash provided by (used in) financing activities	92,206	(75,331)
Effect of exchange rate changes on cash and cash equivalents	(16,562)	6,377
Net change in cash and cash equivalents	(13,839)	198,516
Cash and cash equivalents balance, beginning of period	886,838	690,850
Cash and cash equivalents balance, end of period	872,999	889,366
Cash paid for:
Interest	51,671	42,840
Income taxes	$ 160,948	$ 126,744