CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net income	$ 58,867	$ 87,657	$ 111,146	$ 187,696
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	74,211	65,957	221,306	181,966
Equity-based compensation	5,332	5,104	20,232	15,572
Deferred income taxes	13,130	(3,417)	46,214	(7,788)
(Gain) loss on disposal of property, plant and equipment	655	(662)	6,638	5,435
Changes in certain assets and liabilities:
Accounts receivable	36,361	30,955	122,296	(157,691)
Inventories	(8,763)	27,212	317,410	21,088
Other assets	(3,100)	(4,928)	8,794	2,776
Accounts payable	(62,757)	9,690	(127,075)	28,116
Income taxes receivable/payable	19,888	8,062	29,309	22,491
Accrued expenses and liabilities	30,554	23,594	(47,973)	(1,670)
Net cash provided by operating activities	164,378	249,224	708,297	297,991
Investing activities:
Purchases of property, plant and equipment	(30,286)	(24,531)	(86,458)	(82,906)
Acquisition of business, net of cash acquired	(45,000)	(1,647,463)	(45,000)	(1,647,463)
Other investing activities	3,715	2,959	6,184	34,157
Net cash used in investing activities	(71,571)	(1,669,035)	(125,274)	(1,696,212)
Financing activities:
Issuance of current and long-term debt	67,999	1,394,497	179,033	1,501,895
Repayments of current and long-term debt	(73,420)	(138,533)	(561,428)	(271,191)
Exercise of stock options proceeds, including related tax effect	302	11,576	7,261	22,997
Contributions from noncontrolling investors, net	(17)	(52)	(1,181)	4,712
Dividends paid	(33,282)	(27,556)	(94,281)	(77,737)
Debt issuance costs		(18,020)		(18,020)
Net cash provided by (used in) financing activities	(38,418)	1,221,912	(470,596)	1,162,656
Increase (decrease) in cash and equivalents	54,389	(197,899)	112,427	(235,565)
Cash and equivalents at beginning of period	419,401	357,490	361,363	395,156
Cash and equivalents at end of period	473,790	159,591	473,790	159,591
Supplemental disclosure information:
Cash paid for interest	26,701	40,022	115,345	100,523
Cash paid (received) for federal and state income taxes, net	$ 1,172	$ 41,267	$ (10,321)	$ 86,418