Restatement Of Condensed Consolidated Financial Statements (Condensed Consolidated Balance Sheet) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2012 As previously reported	Jun. 30, 2012 As previously reported	Mar. 31, 2012 As previously reported	Dec. 31, 2011 As previously reported	Sep. 30, 2011 As previously reported	Jun. 30, 2011 As previously reported	Mar. 31, 2011 As previously reported	Dec. 31, 2010 As previously reported	Dec. 31, 2009 As previously reported	Dec. 31, 2008 As previously reported	Sep. 30, 2012 Adjustment	Jun. 30, 2012 Adjustment	Mar. 31, 2012 Adjustment	Dec. 31, 2011 Adjustment	Sep. 30, 2011 Adjustment	Jun. 30, 2011 Adjustment	Mar. 31, 2011 Adjustment	Dec. 31, 2010 Adjustment	Dec. 31, 2009 Adjustment	Sep. 30, 2012 Restated	Jun. 30, 2012 Restated	Mar. 31, 2012 Restated	Dec. 31, 2011 Restated	Sep. 30, 2011 Restated	Jun. 30, 2011 Restated	Mar. 31, 2011 Restated	Dec. 31, 2010 Restated	Dec. 31, 2009 Restated
Current Assets
Cash and cash equivalents	$ 84,729	$ 94,410	$ 122,116	$ 126,439	$ 102,713	$ 138,680	$ 107,798	$ 94,410	$ 111,191	$ 126,534	$ 168,112	$ 122,116	$ 126,439		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 102,713	$ 138,680	$ 107,798	$ 94,410	$ 111,191	$ 126,534	$ 168,112	$ 122,116	$ 126,439
Accounts receivable, net of allowance for doubtful accounts	352,089	410,866			220,802	210,280	220,257	410,866	236,486	250,453	251,835	433,168			0	0	0	0	0	0	0	0		220,802	210,280	220,257	410,866	236,486	250,453	251,835	433,168
Inventories	174,714	117,690			160,061	136,826	120,785	117,690	121,441	150,160	146,966	91,874			0	0	0	0	0	0	0	0		160,061	136,826	120,785	117,690	121,441	150,160	146,966	91,874
Prepaid expenses	18,099	16,538			27,472	21,127	23,169	16,538				9,536			0	0	0	0				0		27,472	21,127	23,169	16,538				9,536
Prepaid expenses and other current assets									46,092	58,571	69,436								0	0	0							46,092	58,571	69,436
Income taxes receivable	13,828	10,035						10,035										0									10,035
Other current assets	92,421	12,985			48,780	25,471	21,722	12,985				24,218			0	0	0	0				0		48,780	25,471	21,722	12,985				24,218
Deferred income taxes	2,298	4,717			5,173	2,217	2,646	4,717	45,660	93,063	87,172	80,956			0	0	0	0	(10,644)	(31,509)	(30,727)	(29,274)		5,173	2,217	2,646	4,717	35,016	61,554	56,445	51,682
Debt issuance cost	13,645	2,962			7,389	6,797	2,959	2,962	2,972	2,884	2,748	2,739			0	0	0	0	0	0	0	0		7,389	6,797	2,959	2,962	2,972	2,884	2,748	2,739
Total Current Assets	751,823	670,203			572,390	541,398	499,336	670,203	563,842	681,665	726,269	764,607			0	0	0	0	(10,644)	(31,509)	(30,727)	(29,274)		572,390	541,398	499,336	670,203	553,198	650,156	695,542	735,333
Intangible assets	454,563	463,848			486,787	457,598	508,605	463,848	471,695	699,127	684,844	627,342			0	0	0	0	0	0	0	0		486,787	457,598	508,605	463,848	471,695	699,127	684,844	627,342
Goodwill	388,385	670,294	1,452,986		706,924	663,792	735,572	670,294	1,068,378	1,873,604	1,836,866	1,452,986			0	0	0	0	0	0	0	0		706,924	663,792	735,572	670,294	1,068,378	1,873,604	1,836,866	1,452,986
Property, plant and equipment, net	169,744	176,660			178,871	173,446	190,742	176,660	181,185	221,503	218,382	189,880			0	0	0	0	0	0	0	0		178,871	173,446	190,742	176,660	181,185	221,503	218,382	189,880
Deferred income taxes	3,037	0	6,649		23,195	23,254	22,811	21,488	57,056	42,625	43,805	44,028			(23,195)	(23,254)	(22,810)	(21,488)	(57,056)	(36,191)	(37,754)	(37,379)		0	0	1	0	0	6,434	6,051	6,649
Equity method investment in affiliates												243,010										0									243,010
Debt issuance costs	0	13,550			11,324	12,100	12,789	13,550	14,283	15,110	16,042	16,656			0	0	0	0	0	0	0	0		11,324	12,100	12,789	13,550	14,283	15,110	16,042	16,656
Non-current assets held for sale	0	675			675	675	675	675	676	0	0	8,614			0	0	0	0	0	0	0	0		675	675	675	675	676	0	0	8,614
Total Non-Current Assets	1,015,729	1,325,027			1,407,776	1,330,865	1,471,194	1,346,515	1,793,273	2,851,969	2,799,939	2,582,516			(23,195)	(23,254)	(22,810)	(21,488)	(57,056)	(36,191)	(37,754)	(37,379)		1,384,581	1,307,611	1,448,384	1,325,027	1,736,217	2,815,778	2,762,185	2,545,137
Total Assets	1,767,552	1,995,230			1,980,166	1,872,263	1,970,530	2,016,718	2,357,115	3,533,634	3,526,208	3,347,123			(23,195)	(23,254)	(22,810)	(21,488)	(67,700)	(67,700)	(68,481)	(66,653)		1,956,971	1,849,009	1,947,720	1,995,230	2,289,415	3,465,934	3,457,727	3,280,470
Current Liabilities
Trade accounts payable	126,489	144,797			78,735	83,066	69,868	144,797	87,724	82,403	90,094	92,840			0	0	0	0	0	0	0	0		78,735	83,066	69,868	144,797	87,724	82,403	90,094	92,840
Bank loans and overdraft facilities	130,655	85,762			115,196	57,194	66,708	85,762	54,213	65,375	72,496	45,359			0	0	0	0	0	0	0	0		115,196	57,194	66,708	85,762	54,213	65,375	72,496	45,359
Short-term obligations under Convertible Senior Notes	256,922	0			257,122	270,993	305,977								0	0	0							257,122	270,993	305,977
Obligations under Debt Security	944,499	0			70,000	70,000	0								0	0	0							70,000	70,000	0
Income taxes payable	10,039	9,607			9,421	7,363	8,391	9,607	1,070	1,190	3,325	5,708			0	0	0	0	0	0	0	0		9,421	7,363	8,391	9,607	1,070	1,190	3,325	5,708
Taxes other than income taxes	197,135	189,515			101,820	124,908	101,323	189,515	89,644	111,924	97,081	182,343			0	0	0	0	0	0	0	0		101,820	124,908	101,323	189,515	89,644	111,924	97,081	182,343
Other accrued liabilities	88,573	48,208			75,357	59,001	73,441	48,208	54,519	43,032	98,201	57,901			0	0	0	0	0	0	0	0		75,357	59,001	73,441	48,208	54,519	43,032	98,201	57,901
Current portions of obligations under capital leases	729	1,109			832	956	1,159	1,109	931	916	838	758			0	0	0	0	0	0	0	0		832	956	1,159	1,109	931	916	838	758
Deferred consideration												5,000										0									5,000
Total Current Liabilities	1,829,948	478,998			708,483	673,481	626,867	478,998	288,101	304,840	362,035	389,909			0	0	0	0	0	0	0	0		708,483	673,481	626,867	478,998	288,101	304,840	362,035	389,909
Long-term debt, less current maturities									18,738	21,592	0								0	0	0							18,738	21,592	0
Long-term obligations under capital leases	499	532			674	684	728	532	838	892	1,096	1,175			0	0	0	0	0	0	0	0		674	684	728	532	838	892	1,096	1,175
Long-term obligations under Convertible Senior Notes	0	304,645						304,645										0									304,645
Long-term obligations under Convertible Senior Notes and Senior Secured Notes												1,250,758										0									1,250,758
Long-term obligations under Senior Notes	0	932,089			933,871	917,848	950,643	932,089	1,262,087	1,301,942	1,288,564				0	0	0	0	0	0	0			933,871	917,848	950,643	932,089	1,262,087	1,301,942	1,288,564
Long-term accruals	700	2,000			2,093	1,978	2,191	2,000	1,963	2,336	2,290	2,767			0	0	0	0	0	0	0	0		2,093	1,978	2,191	2,000	1,963	2,336	2,290	2,767
Deferred income taxes	94,034	95,352	121,964		94,815	84,970	99,199	91,128	131,459	185,021	183,000	169,318			2,517	2,458	2,902	4,224	(42,996)	(50,970)	(49,705)	(47,354)		97,332	87,428	102,101	95,352	88,463	134,051	133,295	121,964
Commitments and contingencies
Total Long Term Liabilities	105,070	1,334,618			1,031,453	1,005,480	1,052,761	1,330,394	1,415,085	1,511,783	1,474,950	1,424,018			2,517	2,458	2,902	4,224	(42,996)	(50,970)	(49,705)	(47,354)		1,033,970	1,007,938	1,055,663	1,334,618	1,372,089	1,460,813	1,425,245	1,376,664
Temporary equity	29,443	0			29,443	29,558	0								0	0	0							29,443	29,558	0
Stockholders' Equity
Common Stock	760	727			730	731	731	727	728	727	727	708			0	0	0	0	0	0	0	0		730	731	731	727	728	727	727	708
Additional paid-in-capital	1,372,378	1,369,471			1,371,389	1,371,059	1,370,335	1,369,471	1,368,864	1,368,202	1,367,509	1,343,639			0	0	0	0	0	0	0	0		1,371,389	1,371,059	1,370,335	1,369,471	1,368,864	1,368,202	1,367,509	1,343,639
(Accumulated deficit) / Retained earnings	(1,584,222)	(1,220,984)			(1,189,620)	(1,225,389)	(1,137,700)	(1,197,884)	(728,602)	120,133	123,466	125,500			(23,100)	(23,100)	(23,100)	(23,100)	(20,864)	(20,864)	(20,864)	(20,864)		(1,212,720)	(1,248,489)	(1,160,800)	(1,220,984)	(749,466)	99,269	102,602	104,636
Accumulated other comprehensive income	14,325	32,550			28,438	17,493	57,686	35,162	13,089	228,099	197,671	63,499			(2,612)	(2,612)	(2,612)	(2,612)	(3,840)	4,134	2,088	1,565	1,565	25,826	14,881	55,074	32,550	9,249	232,233	199,759	65,064
Less Treasury Stock at cost	(150)	(150)			(150)	(150)	(150)	(150)	(150)	(150)	(150)	(150)			0	0	0	0	0	0	0	0		(150)	(150)	(150)	(150)	(150)	(150)	(150)	(150)
Total Equity	(196,909)	181,614	1,513,897		210,787	163,744	290,902	207,326	653,929	1,717,011	1,689,223	1,533,196		1,685,162	(25,712)	(25,712)	(25,712)	(25,712)	(24,704)	(16,730)	(18,776)	(19,299)		185,075	138,032	265,190	181,614	629,225	1,700,281	1,670,447	1,513,897
Total Liabilities and Stockholders' Equity	$ 1,767,552	$ 1,995,230			$ 1,980,166	$ 1,872,263	$ 1,970,530	$ 2,016,718	$ 2,357,115	$ 3,533,634	$ 3,526,208	$ 3,347,123			$ (23,195)	$ (23,254)	$ (22,810)	$ (21,488)	$ (67,700)	$ (67,700)	$ (68,481)	$ (66,653)		$ 1,956,971	$ 1,849,009	$ 1,947,720	$ 1,995,230	$ 2,289,415	$ 3,465,934	$ 3,457,727	$ 3,280,470