CONDENSED CONSOLIDATED BALANCE SHEETS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Condensed Financial Information [Line Items]
Cash and cash equivalents	$ 107,637	$ 63,869	$ 94,049	$ 53,577
Trade accounts receivable, net	1,020,454	939,422
Inventories, net	662,764	626,967
Other current assets	115,070	107,162
Total current assets	1,905,925	1,737,420
Intercompany receivables, net	0	0
Property, buildings and equipment, net	140,998	133,550
Intangible assets, net	204,572	156,874
Goodwill and other intangibles, net	1,127,001	1,008,127
Investments in affiliates and other noncurrent assets	41,498	42,481
Total assets	3,419,994	3,078,452
Accounts payable	693,177	642,777
Other current liabilities	216,859	203,069
Total current liabilities	910,036	845,846
Intercompany payables, net	0	0
Long-term debt	696,758	642,922
Other noncurrent liabilities	268,670	243,774
Total stockholders' equity	1,544,530	1,345,910
Total liabilities and stockholders' equity	3,419,994	3,078,452
Parent Company [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	3	5	7	1
Trade accounts receivable, net	0	0
Inventories, net	0	0
Other current assets	0	270
Total current assets	3	275
Intercompany receivables, net	0	0
Property, buildings and equipment, net	0	0
Intangible assets, net	0	0
Goodwill and other intangibles, net	0	0
Investments in affiliates and other noncurrent assets	2,426,032	2,219,323
Total assets	2,426,035	2,219,598
Accounts payable	0	0
Other current liabilities	2,578	7,797
Total current liabilities	2,578	7,797
Intercompany payables, net	679,405	668,447
Long-term debt	171,244	169,054
Other noncurrent liabilities	28,126	28,131
Total stockholders' equity	1,544,682	1,346,169
Total liabilities and stockholders' equity	2,426,035	2,219,598
Guarantor Subsidiaries [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	75,673	44,412	38,567	32,342
Trade accounts receivable, net	0	0
Inventories, net	337,316	341,423
Other current assets	38,423	32,548
Total current assets	451,412	418,383
Intercompany receivables, net	0	0
Property, buildings and equipment, net	59,543	54,038
Intangible assets, net	6,360	6,981
Goodwill and other intangibles, net	246,125	246,125
Investments in affiliates and other noncurrent assets	3,601,264	3,422,885
Total assets	4,364,704	4,148,412
Accounts payable	444,291	423,509
Other current liabilities	57,161	56,035
Total current liabilities	501,452	479,544
Intercompany payables, net	1,071,720	1,103,474
Long-term debt	187,988	188,081
Other noncurrent liabilities	182,443	163,177
Total stockholders' equity	2,421,101	2,214,136
Total liabilities and stockholders' equity	4,364,704	4,148,412
Non-Guarantor Subsidiaries [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	31,961	19,452	55,475	21,234
Trade accounts receivable, net	1,020,454	939,422
Inventories, net	325,448	285,544
Other current assets	76,647	74,344
Total current assets	1,454,510	1,318,762
Intercompany receivables, net	1,751,125	1,771,921
Property, buildings and equipment, net	81,455	79,512
Intangible assets, net	198,212	149,893
Goodwill and other intangibles, net	880,876	762,002
Investments in affiliates and other noncurrent assets	30,989	31,745
Total assets	4,397,167	4,113,835
Accounts payable	248,886	219,268
Other current liabilities	157,120	139,237
Total current liabilities	406,006	358,505
Intercompany payables, net	0	0
Long-term debt	337,526	285,787
Other noncurrent liabilities	58,101	52,466
Total stockholders' equity	3,595,534	3,417,077
Total liabilities and stockholders' equity	4,397,167	4,113,835
Consolidation, Eliminations [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	0	0	0	0
Trade accounts receivable, net	0	0
Inventories, net	0	0
Other current assets	0	0
Total current assets	0	0
Intercompany receivables, net	(1,751,125)	(1,771,921)
Property, buildings and equipment, net	0	0
Intangible assets, net	0	0
Goodwill and other intangibles, net	0	0
Investments in affiliates and other noncurrent assets	(6,016,787)	(5,631,472)
Total assets	(7,767,912)	(7,403,393)
Accounts payable	0	0
Other current liabilities	0	0
Total current liabilities	0	0
Intercompany payables, net	(1,751,125)	(1,771,921)
Long-term debt	0	0
Other noncurrent liabilities	0	0
Total stockholders' equity	(6,016,787)	(5,631,472)
Total liabilities and stockholders' equity	$ (7,767,912)	$ (7,403,393)