Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 338,101	$ 270,394
Accounts receivable, net	439,134	403,337
Inventories, net	204,758	178,559
Deferred taxes	38,004	32,894
Unbilled Receivables	63,829	75,620
Other current assets	31,647	37,287
Total current assets	1,115,473	998,091
Property, plant and equipment, net	108,775	103,487
Goodwill	2,866,426	2,727,780
Other intangible assets, net	1,094,142	1,104,513
Deferred taxes	63,006	57,850
Other assets	71,595	77,803
Total assets	5,319,417	5,069,524
Liabilities and Stockholders' Equity
Accounts payable	141,943	137,778
Accrued liabilities	322,904	298,080
Income taxes payable	8,895	0
Deferred taxes	10,548	10,445
Current portion of long-term debt, net	69,906	93,342
Total current liabilities	554,196	539,645
Long-term debt, net of current portion	1,015,110	1,247,703
Deferred taxes	482,603	465,001
Other liabilities	72,412	66,268
Total liabilities	2,124,321	2,318,617
Stockholders' equity:
Common stock, $0.01 par value per share; 350,000 shares authorized; 97,122 shares issued and 95,088 outstanding at December 31, 2010 and 95,768 shares issued and 93,618 outstanding at December 31, 2009.	987	971
Additional paid-in capital	1,117,093	1,045,286
Retained earnings	2,063,110	1,680,849
Accumulated other comprehensive earnings	33,800	43,978
Treasury stock 2,034 shares at December 31, 2010 and 2,150 shares at December 31, 2009.	(19,894)	(20,177)
Total stockholders' equity	3,195,096	2,750,907
Total liabilities and stockholders' equity	$ 5,319,417	$ 5,069,524