Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 341,346	$ 279,766
Receivables, net	1,255,876	1,027,106
Inventories	2,794,894	2,380,783
Prepaid expenses and other current assets	200,944	134,479
Total current assets	4,593,060	3,822,134
Property, plant and equipment, net	1,201,003	913,089
Intangible assets:
Goodwill	4,475,266	3,536,511
Other intangibles, net	953,372	743,769
Equity method investments	157,409	208,404
Other assets	205,226	142,965
Total assets	11,585,336	9,366,872
Current liabilities:
Accounts payable	941,747	788,613
Accrued expenses:
Accrued payroll-related liabilities	153,536	143,424
Other accrued expenses	358,212	218,600
Refund liability	106,732
Other current liabilities	57,088	45,727
Current portion of long-term obligations	118,365	126,360
Total current liabilities	1,735,680	1,322,724
Long-term obligations, excluding current portion	4,250,137	3,277,620
Deferred income taxes	325,537	252,359
Other noncurrent liabilities	376,566	307,516
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.01 par value, 1,000,000,000 shares authorized, 318,197,309 and 309,126,386 shares issued and outstanding at September 30, 2018 and December 31, 2017, respectively	3,182	3,091
Additional paid-in capital	1,409,242	1,141,451
Retained earnings	3,562,827	3,124,103
Accumulated other comprehensive loss	(134,791)	(70,476)
Total Company stockholders' equity	4,840,460	4,198,169
Noncontrolling interest	56,956	8,484
Total stockholders' equity	4,897,416	4,206,653
Total liabilities and stockholders’ equity	$ 11,585,336	$ 9,366,872