Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

CONDENSED CONSOLIDATED BALANCE SHEETS (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Condensed Financial Information [Line Items]
Cash and cash equivalents	$ 87,218		$ 96,343	$ 110,940		$ 117,953
Trade accounts receivable, net	1,355,541		1,166,607
Inventories, net	1,004,127		948,726
Prepaid Expense and Other Assets, Current	72,284		76,980
Total current assets	2,584,864		2,385,640
Property, buildings and equipment, net	172,359		160,878
Operating Lease, Right-of-Use Asset	233,403		0
Intangible assets, net	304,392		316,016
Goodwill and other intangibles, net	1,752,800		1,722,603
Other assets	20,118		19,899
Total assets	5,067,936		4,605,036
Accounts payable	868,605		794,348
Short-term debt	27,217		30,785
Total current liabilities	1,124,832		1,061,946
Long-term Debt, Excluding Current Maturities	1,399,486		1,167,311
Operating Lease, Liability, Noncurrent	177,907		0
Total stockholders' equity	2,141,075		2,135,310
Stockholders' Equity Attributable to Noncontrolling Interest	6,252	$ 6,003	5,584	5,313	$ 5,046	3,596
Total liabilities and stockholders' equity	5,067,936		4,605,036
Parent Company [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	0		0	0		0
Trade accounts receivable, net	0		0
Inventories, net	0		0
Prepaid Expense and Other Assets, Current	1,123		1,123
Total current assets	1,123		1,123
Intercompany receivables, net	0		0
Property, buildings and equipment, net	0		0
Operating Lease, Right-of-Use Asset	0
Intangible assets, net	0		0
Goodwill and other intangibles, net	0		0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	3,336,052		3,182,469
Other assets	0		0
Total assets	3,337,175		3,183,592
Accounts payable	0		0
Short-term debt	0		0
Other Liabilities, Current	0		0
Total current liabilities	0		0
Intercompany payables, net	1,196,100		1,048,282
Long-term Debt, Excluding Current Maturities	0		0
Operating Lease, Liability, Noncurrent	0
Liabilities, Other than Long-term Debt, Noncurrent	0		0
Total stockholders' equity	2,141,075		2,135,310
Stockholders' Equity Attributable to Noncontrolling Interest	0		0
Total liabilities and stockholders' equity	3,337,175		3,183,592
Guarantor Subsidiaries [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	34,401		35,931	51,489		50,602
Trade accounts receivable, net	0		0
Inventories, net	455,898		440,422
Prepaid Expense and Other Assets, Current	17,703		57,586
Total current assets	508,002		533,939
Intercompany receivables, net	0		0
Property, buildings and equipment, net	73,401		63,506
Operating Lease, Right-of-Use Asset	139,468
Intangible assets, net	1,816		2,131
Goodwill and other intangibles, net	257,623		257,623
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	5,276,915		5,137,783
Other assets	2,597		2,905
Total assets	6,259,822		5,997,887
Accounts payable	418,469		404,373
Short-term debt	0		0
Other Liabilities, Current	66,660		86,600
Total current liabilities	485,129		490,973
Intercompany payables, net	1,325,247		1,355,422
Long-term Debt, Excluding Current Maturities	892,909		842,093
Operating Lease, Liability, Noncurrent	110,360
Liabilities, Other than Long-term Debt, Noncurrent	110,125		126,930
Total stockholders' equity	3,336,052		3,182,469
Stockholders' Equity Attributable to Noncontrolling Interest	0		0
Total liabilities and stockholders' equity	6,259,822		5,997,887
Non-Guarantor Subsidiaries [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	52,817		60,412	59,451		67,351
Trade accounts receivable, net	1,355,541		1,166,607
Inventories, net	548,229		508,304
Prepaid Expense and Other Assets, Current	121,956		124,523
Total current assets	2,078,543		1,859,846
Intercompany receivables, net	2,521,347		2,403,704
Property, buildings and equipment, net	98,958		97,372
Operating Lease, Right-of-Use Asset	93,935
Intangible assets, net	302,576		313,885
Goodwill and other intangibles, net	1,495,177		1,464,980
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0		0
Other assets	17,521		16,994
Total assets	6,608,057		6,156,781
Accounts payable	450,136		389,975
Short-term debt	27,217		30,785
Other Liabilities, Current	165,154		159,481
Total current liabilities	642,507		580,241
Intercompany payables, net	0		0
Long-term Debt, Excluding Current Maturities	506,577		325,218
Operating Lease, Liability, Noncurrent	67,547
Liabilities, Other than Long-term Debt, Noncurrent	120,763		119,123
Total stockholders' equity	5,276,915		5,137,783
Stockholders' Equity Attributable to Noncontrolling Interest	6,252		5,584
Total liabilities and stockholders' equity	6,608,057		6,156,781
Consolidated Entities [Member]
Condensed Financial Information [Line Items]
Cash and cash equivalents	87,218		96,343	110,940		117,953
Trade accounts receivable, net	1,355,541		1,166,607
Inventories, net	1,004,127		948,726
Prepaid Expense and Other Assets, Current	137,978		173,964
Total current assets	2,584,864		2,385,640
Intercompany receivables, net	0		0
Property, buildings and equipment, net	172,359		160,878
Operating Lease, Right-of-Use Asset	233,403
Intangible assets, net	304,392		316,016
Goodwill and other intangibles, net	1,752,800		1,722,603
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0		0
Other assets	20,118		19,899
Total assets	5,067,936		4,605,036
Accounts payable	868,605		794,348
Short-term debt	27,217		30,785
Other Liabilities, Current	229,010		236,813
Total current liabilities	1,124,832		1,061,946
Intercompany payables, net	0		0
Long-term Debt, Excluding Current Maturities	1,399,486		1,167,311
Operating Lease, Liability, Noncurrent	177,907
Liabilities, Other than Long-term Debt, Noncurrent	230,888		246,053
Total stockholders' equity	2,141,075		2,135,310
Stockholders' Equity Attributable to Noncontrolling Interest	6,252		5,584
Total liabilities and stockholders' equity	5,067,936		4,605,036
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
Prepaid Expense and Other Assets, Current	(2,804)		(9,268)
Total current assets	(2,804)		(9,268)
Intercompany receivables, net	(2,521,347)		(2,403,704)
Property, buildings and equipment, net	0		0
Operating Lease, Right-of-Use Asset	0
Intangible assets, net	0		0
Goodwill and other intangibles, net	0		0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(8,612,967)		(8,320,252)
Other assets	0		0
Total assets	(11,137,118)		(10,733,224)
Accounts payable	0		0
Short-term debt	0		0
Other Liabilities, Current	(2,804)		(9,268)
Total current liabilities	(2,804)		(9,268)
Intercompany payables, net	(2,521,347)		(2,403,704)
Long-term Debt, Excluding Current Maturities	0		0
Operating Lease, Liability, Noncurrent	0
Liabilities, Other than Long-term Debt, Noncurrent	0		0
Total stockholders' equity	(8,612,967)		(8,320,252)
Stockholders' Equity Attributable to Noncontrolling Interest	0		0
Total liabilities and stockholders' equity	$ (11,137,118)		$ (10,733,224)